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Mycelial mass,microbial lipids and γ-linolenic acid(GLA)by Cunninghamella elegans cultivated on agro-industrial residues
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作者 Gabriel Vasilakis Afef Gamraoui +5 位作者 Dimitris Karayannis Nikos Giannakis Abdelwaheb Chatti Ioannis Politis Panagiota Diamantopoulou Seraphim Papanikolaou 《Resources Chemicals and Materials》 2025年第1期64-76,共13页
In the current study,the Zygomycetes fungus Cunninghamella elegans NRRL Y-1392 was evaluated for its ability to grow in extracts derived from dried and ground agricultural residues,such as mushroom stalks and roots fr... In the current study,the Zygomycetes fungus Cunninghamella elegans NRRL Y-1392 was evaluated for its ability to grow in extracts derived from dried and ground agricultural residues,such as mushroom stalks and roots from hydroponically cultivated lettuces and produce poly-unsaturated fatty acids(PUFA)andγ-linolenic acid(GLA)rich lipids.Initially,the compositions of stalks and lettuce roots were analysed,and the fungus was batch-flask cultivated on six different commercial semi-defined substrates containing different sugars detected in stalks and roots to evaluate its catabolic ability.C.elegans was capable to assimilate all sugars,but at a lower rate in the case of arabinose.Subsequently,C.elegans was cultivated on tailor-made semi-defined commercial substrates,resembling hydrolysates containing carbohydrates found in mushroom stalks,under both nitrogen-excess and nitrogen-limited conditions,and resembling that of hydrolysates of roots,under nitrogen-excess conditions.Based on the results,under nitrogen-excess conditions,in the case of media resembling stalks hydrolysates,higher production values for biomass,PUFAs,and GLA were observed(20.3 g/L,1906 mg/L,668 mg/L),accompanied by high productivity values due to short cultivation periods,while under nitrogen limitation,high lipid accumulation(lipid in dry cell weight=48%,w/w)was presented,and lipids rich in oleic acid were produced.Finally,the fungus was cultivated on a medium derived from hot water-extraction applied to mush-room stalks,enriched with organic nitrogen sources.The fungus was successfully grown on the sugar-rich waterextract derived from mushroom stalks,resulting in dry biomass of 14.5 g/L,lipids of 1.8 g/L,with 15%(w/w)of GLA in cellular lipids. 展开更多
关键词 Agro-industrial residues Circular economy Cunninghamella elegans Gamma-linolenic acid Microbial lipids Polyunsaturated fatty acids
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Environmentally benign process for valorization of lignocellulosic bamboo residues with green solvent propylene carbonate
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作者 Jie Liang Jingcong Xie +4 位作者 Jianchun Jiang Yan Ma Jun Ye Xianhai Zeng Kui Wang 《Green Energy & Environment》 2025年第8期1777-1788,共12页
A novel environmentally benign biphasic system composed of propylene carbonate(PC) and aqueous solution of p-toluenesulfonic acid(p-TsOH aq) was designed for the efficient valorization of lignocellulosic bamboo residu... A novel environmentally benign biphasic system composed of propylene carbonate(PC) and aqueous solution of p-toluenesulfonic acid(p-TsOH aq) was designed for the efficient valorization of lignocellulosic bamboo residues, resulting in more than 95.5% of hemicellulose and 97.2% of lignin digested under mild conditions of 130°C for 1 h. Meanwhile, 91.9% of cellulose was retained with loose structure, followed by 95.8% enzyme hydrolysis yield and 347.9 mg g-1of glucose yield. Notably, the synergistic effect between PC and p-TsOH on efficiency and selectivity was proposed by a control group experiment and subsequently verified, which is believed to be responsible for the simultaneous degradation and separation of lignin and hemicelluloses into oligomeric phenols and pentose, also facilitating subsequent valorization.Furthermore, the novel PC/p-TsOH aq biphasic system demonstrated excellent retrievability and adaptability to different feedstocks, offering a promising green strategy for the efficient valorization of lignocellulosic biomass in industrial biorefineries. 展开更多
关键词 Biorefinery Green solvent Bamboo residues Propylene carbonate p-toluenesulfonic acid
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Optimizing Activation Temperature of Sustainable Porous Materials Derived from Forestry Residues:Applications in Radar-Absorbing Technologies
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作者 Nila Cecília Faria Lopes Medeiros Gisele Amaral-Labat +6 位作者 Leonardo Iusuti deMedeiros Alan Fernando Ney Boss Beatriz Carvalhoda SilvaFonseca Manuella Gobbo de Castro Munhoz Guilherme F.B.Lenz e Silva Mauricio Ribeiro Baldan Flavia Lega Braghiroli 《Journal of Renewable Materials》 2025年第6期1021-1042,共22页
Biochar,a carbon-rich material derived from the thermochemical conversion of biomass under oxygenfree conditions,has emerged as a sustainable resource for radar-absorbing technologies.This study explores the productio... Biochar,a carbon-rich material derived from the thermochemical conversion of biomass under oxygenfree conditions,has emerged as a sustainable resource for radar-absorbing technologies.This study explores the production of activated biochars from end-of-life wood panels using a scalable and sustainable physical activation method with CO_(2) at different temperatures,avoiding the extensive use of corrosive chemicals and complex procedures associated with chemical or vacuum activation.Compared to conventional chemically or vacuum-activated biochars,the physically activated biochar demonstrated competitive performance while minimizing environmental impact,operational complexity,and energy consumption.Furthermore,activation at 750℃ reduces energy consumption by 14% and 28% compared to activations at 850℃ and 950℃,respectively,emphasizing the cost-effectiveness of this method for large-scale applications.The composite with 15% of biochar embedded in silicon rubber presented good electromagnetic performance,achieving a measured reflection loss(RL)of−37.2 dB at 11.3 GHz with an 8.4 mm thickness and an effective absorption bandwidth(EAB)of 1.25 GHz.These results highlight the potential of biocharsilicone rubber composites as flexible radar-absorbing materials(RAMs)for applications in electromagnetic shielding,anechoic chambers,and Internet of Things(IoT)devices.This study also shows the importance of forestry residues as sustainable precursors for producing low-cost porous carbon materials,aligning with circular economy principles and the United Nations’2030 Agenda for Sustainable Development.This work establishes a framework for scalable,cost-effective,and sustainable biochar production,addressing critical challenges in electromagnetic interference(EMI)mitigation and advancing the global adoption of green technologies. 展开更多
关键词 BIOCHAR forestry residues electromagnetic properties flexible composites
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Preparation of Silicon Fertilizer Using Lithium Pyroxene Acid-leaching Residues as Starting Materials
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作者 CHEN Jianghua LUO Dawei +2 位作者 GAO Zijie RONG Ke DENG Jiabao 《Journal of Wuhan University of Technology(Materials Science)》 2025年第2期389-399,共11页
We focus on a novel and economical route for the synthesis of Si fertilizer via the calcination method using lithium pyroxene acid-leaching residues as the starting materials.The molar ratio of Si/K/Ca of 1:1.4:0.8,ca... We focus on a novel and economical route for the synthesis of Si fertilizer via the calcination method using lithium pyroxene acid-leaching residues as the starting materials.The molar ratio of Si/K/Ca of 1:1.4:0.8,calcination temperature of 900℃and calcination time of 120 min were identified as the optimal conditions to maximize the available Si content of the prepared Si fertilizer.The performance of the resulting product satisfies the Chinese agricultural standard for silica fertilizers,providing a new solution for the large-scale harmless and sustainable reuse of lithium pyroxene tailings.The X-ray diffraction(XRD)and Fourier transform infrared spectroscopy(FTIR)characterization elucidated the formation mechanism of silica fertilizers,and identified KAlSiO_(4)and K_(4)CaSi_(3)O_(9)as the primary silicates products.Observation of the surface morphology of the samples was conducted by scanning electron microscopy(SEM)and X-ray energy dispersive spectrometry(EDS),and compositional analysis of the micro-regions.The acceleration action of CaCO_(3)in the decomposition process of lithium pyroxene acid-leaching residues was demonstrated by the thermogravimetry-differential scanning calorimetry(TG-DSC)test.Determination of heavy metal elements in Si fertilizer was performed by ICP-OES.Potting experiments confirmed that the best growth of pakchoi was achieved when 5 g·kg^(-1)of Si fertilizer was applied.These evidence suggests that the Si fertilizer prepared in this study is a promising candidate for a silica-supplemented soil. 展开更多
关键词 lithium pyroxene acid-leaching residues available silicon calcination method Si fertilizer
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Experimental Characterization of the Thermal Properties of Thin Polypropylene Plates Reinforced with Residues and Fibers from the Borassus Wood (Rônier) of Chad
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作者 Abakar Malgnan Kimtangar Ngargueudedjim +2 位作者 Bruno Bassa Hinpere Wedjou Bianpambe Guy Edgar Ntamack 《Open Journal of Applied Sciences》 2025年第2期517-529,共13页
This study focuses on the thermophysical characterizations of composite materials made from polypropylene reinforced with residues and fibers from Borassus wood from Chad. These properties are experimentally determine... This study focuses on the thermophysical characterizations of composite materials made from polypropylene reinforced with residues and fibers from Borassus wood from Chad. These properties are experimentally determined at different temperatures using the hot wire method of the “FP2C” machine, where the hot wire probe is inserted between two specimens. The values of the thermal conductivity in powdered Borassus wood range from 0.170 W/mK to 0.182 W/mK for female wood (FNTF) and from 0.169 W/mK to 0.173 W/mK for male wood. For the female and male fibers, the thermal conductivity values range from 0.137 W/mK to 0.157 W/mK for the female and from 0.138 W/mK to 0.168 W/mK for the male. The thermal effusivity of the residues and fibers of Borassus wood varies from: 509.6 Ws1/2/m2K to 543 Ws1/2/m2K for the powder of female wood and from 524.6 Ws1/2/m2K to 547 Ws1/2/m2K for the powder of male wood. For the fibers of Borassus wood, the values range from 410.6 Ws1/2/m2K to 523.6 Ws1/2/m2K for the female wood fibers and from 420.3 Ws1/2/m2K to 480.3 Ws1/2/m2K for the male wood fibers. These results are important for the applications of Borassus wood residues and fibers in construction works regarding the thermal insulation of habitats. 展开更多
关键词 Composite Materials residues and Fibers of Rônier Wood from Chad Thin Sheets Thermal Properties Characterization
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Gas Chromatographic Analysis of the Methanogenic Potential of Lignocellulosic Biomass Consisting of Banana Residues in Tambacounda, Senegal
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作者 Haroun Ali Adannou Hamza Aziber Ousman Ndiaye Mouhamadou Lamine 《Open Journal of Applied Sciences》 2025年第1期187-201,共15页
The residual biomass composed of pseudo trunks and banana leaves is very important and poorly valued. There is very little quantified data on the deposits of residual biomass from banana plantations in Senegal and in ... The residual biomass composed of pseudo trunks and banana leaves is very important and poorly valued. There is very little quantified data on the deposits of residual biomass from banana plantations in Senegal and in particular in the Tambacounda region. In this work, we seek to evaluate the methanogenic potential and to valorize this biomass in biogas and biofertilizer. The laboratory experiment lasted approximately 35 days. During this time, the methanogenic microorganisms degrade the organic residue provided, which results in the production of biogas. At the end of the reactions, the rate of biogas production drops, indicating the end of the biodegradation of organic matter. Biogas production is measured over time and the composition of the biogas produced is analyzed by gas chromatography (GC) or by an infrared analyzer. The methane potential of each sample is determined from the cumulative quantity of methane produced in each flask representing a digestion system. The measurement can be expressed in m3 of CH4 per tonne of dry matter or per tonne of raw material. The first challenge of this study therefore lies in the acquisition of reliable and usable data to quantify the methanizable biomass. This study will allow us not only to evaluate the quantities of pseudo trunks and banana leaves available in a plot after harvest but also to test the biogas and methane production potential (BMP test) of this substrate and therefore determine the expected biogas production of this biomass. 展开更多
关键词 Residual Biomass BANANA Tambacounda Laboratory Organic Matter Infrared Analyzer
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Research Progress on Toxicity and Residues of Commonly-used Plant Growth Regulators in Vegetables
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作者 Jun LI Chunyu ZHANG +3 位作者 Li TONG Yufan LIU Baiqin ZHENG Lei WANG 《Agricultural Biotechnology》 2025年第4期47-49,共3页
This paper reviewed the toxicity,maximum residue limits(MRLs)and current residue status of commonly used plant growth regulators in vegetables,including 2,4-dichlorophenoxyacetic acid(2,4-D),naphthaleneacetic acid(NAA... This paper reviewed the toxicity,maximum residue limits(MRLs)and current residue status of commonly used plant growth regulators in vegetables,including 2,4-dichlorophenoxyacetic acid(2,4-D),naphthaleneacetic acid(NAA),ethephon,gibberellin,and paclobutrazol.Methods for reducing residues of plant growth regulators in vegetables were discussed,and recommendations and strategies for their application were proposed. 展开更多
关键词 VEGETABLES Plant growth regulator TOXICITY RESIDUE
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Deashing of Agricultural Residues and Its Impact on Isolated Lignin Properties:A Mini Review
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作者 Eko Budi Santoso Nur Izyan Wan Azelee +2 位作者 Deded Sarip Nawawi Wasrin Syafii Widya Fatriasari 《Journal of Renewable Materials》 2025年第5期865-884,共20页
The significant amount of ash content in agricultural biomass presents an enormous challenge for efficient conversion processes.In addressing this issue,various deashing treatments have been tested and established,inc... The significant amount of ash content in agricultural biomass presents an enormous challenge for efficient conversion processes.In addressing this issue,various deashing treatments have been tested and established,including simple leaching techniques,which can either be performed with or without the addition of chemical agents.These techniques hold promise for improving the deashing efficiency while potentially altering the structural and chemical composition of biomass,specifically lignin content,which is the key focus of this review.This review starts by exploring the presence of ash in agricultural residues and its impact on biomass properties.Next,this review examines deashing strategies aimed at reducing ash levels in biomass followed by analysis of the resulting changes in lignin physical and chemical properties as well as its thermal characteristics.The final part of this review is concluded by the discussion on the limitations of current approaches and the possible future directions to address the challenges covering the environmental impacts of the deashing treatments.A green process approach is emphasized as a sustainable solution with the aim to minimize negative environmental impacts associated with chemical usage during deashing.Finally,this review highlights the potential for ash recovery as a byproduct of the deashing processes,paving the way for an integrative,closed-loop approach within the biorefinery concept. 展开更多
关键词 Leaching treatment high ash content agricultural residue chemical makeup lignin characteristics BIOREFINERY
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Analysis on Influencing Factors of QuEChERS Pretreatment Method for Pesticide Residues
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作者 Yue HUANG Bo LIU +4 位作者 Kexin SHI Huifang YAO Lei WANG Pingyang SHAN Haoshuang DONG 《Agricultural Biotechnology》 2025年第1期62-63,68,共3页
Pesticide residues are related to environmental pollution,food safety and other issues,and sample processing is a key link in the whole analysis and detection process.Therefore,it is of far-reaching significance to es... Pesticide residues are related to environmental pollution,food safety and other issues,and sample processing is a key link in the whole analysis and detection process.Therefore,it is of far-reaching significance to establish a reliable and safe pretreatment technique for pesticide detection.QuEChERS(quick,easy,cheap,effective,rugged and safe),as a pretreatment method for pesticide residue analysis,is widely used in the field of testing and analysis because of its characteristics of rapidity,simplicity,low cost and high efficiency.In this paper,the effects of material selection involving extractants,analyte protectants and purification agents and their ratio optimization in QuEChERS method on the improvement of pretreatment efficiency were analyzed,hoping to provide further technical reference for expanding the pretreatment technique. 展开更多
关键词 Pesticide residue QUECHERS Influencing factor
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Research Progress of QuEChERS Pretreatment Technique in the Detection of Multiple Pesticide Residues 被引量:1
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作者 Bo LIU Dawei WANG +3 位作者 Yuhang GUO Xuehua WANG Lei WANG Yajuan SONG 《Agricultural Biotechnology》 2024年第2期10-11,37,共3页
The QuEChERS extraction technique is a pretreatment technique that has been rapidly applied in recent years and is widely used in the field of pesticide residues with many advantages. This technique is based on solid ... The QuEChERS extraction technique is a pretreatment technique that has been rapidly applied in recent years and is widely used in the field of pesticide residues with many advantages. This technique is based on solid phase extraction (SPE), which uses the interaction between adsorbent and impurities in the matrix to achieve the purpose of purification. The method has easier operation and better purification effect than SPE. In this paper, the research progress of the QuEChERS technique in pesticide residue detection in different fields in recent years and its future development were reviewed, hoping to provide reference for further development and utilization of the QuEChERS technique in pesticide residue detection in the future. 展开更多
关键词 QUECHERS PRETREATMENT Pesticide residues Research progress
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Selective Microcrystalline Cellulose Extraction from Chinese Medicine Residues via Direct PMS Oxidation 被引量:1
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作者 Jinjing Huang Xia Liu +3 位作者 Kaixing Fu Shengyun Yang Shiqing Zhou Jinming Luo 《Engineering》 CSCD 2024年第12期139-145,共7页
The valorization of Chinese medicine residues(CMRs)into high-value-added products,such as microcrystalline cellulose(MCC),has garnered significant interest in the current post-pandemic era,particularly in regions wher... The valorization of Chinese medicine residues(CMRs)into high-value-added products,such as microcrystalline cellulose(MCC),has garnered significant interest in the current post-pandemic era,particularly in regions where Chinese medicine(CM)is widely utilized(i.e.,southeast Asia).In this study,we propose a facile and economical protocol for selectively extracting MCC from CMRs via one-step direct peroxymonosulfate(PMS)oxidation without the need for intricate steps.Importantly,our proposed protocol has been verified to be versatile and can be applied to various solid waste sources rich in cellulose,with an average extraction rate of 75%.Analysis using the Fukui index revealed that theβ-O-4 bond,the aromatic ring in lignin,specific O sites in hemicellulose,and the amorphous region of cellulose are more susceptible to electrophilic attack by PMS than to reactions involving HO^(·),SO_(4)^(·-),or^(1)O_(2).Leveraging this distinct mechanism,the extracted MCC demonstrated ultrahigh purity(~95%)and crystallinity(~85.36%).Overall,our work involves transforming solid waste into high-value products through the provision of a technical solution,with the potential for onsite application.This represents a significant advancement to the valorization of CMRs,particularly in providing theoretical guidance for accelerating the recycling of waste materials. 展开更多
关键词 Chinese medicine residues Microcrystalline cellulose PMS oxidation Electrophilic attacks
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Biochemical, functional and antioxidant potential of higher fungi cultivated on agro-industrial residues. Part Ⅱ: Cultures on mixtures of spent mushroom substrates and mushroom cropping by-products 被引量:1
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作者 Marianna Dedousi Eirini Maria Melanouri +2 位作者 Ilias Diamantis Seraphim Papanikolaou Panagiota Diamantopoulou 《Resources Chemicals and Materials》 2024年第3期175-187,共13页
Novel substrates consisted of different fresh agro-industrial residues,their corresponding and commercial spent mushroom substrates(i.e.SMS deriving from laboratory-scale experiments and SMS deriving from industrial-s... Novel substrates consisted of different fresh agro-industrial residues,their corresponding and commercial spent mushroom substrates(i.e.SMS deriving from laboratory-scale experiments and SMS deriving from industrial-scale experiments by Green Zin S.A.-SMS GZ)and Pleurotus waste(PW;stipes/mishappen mushrooms)were used in blends for a new cultivation cycle of Pleurotus ostreatus and P.eryngii mushrooms in bags.Their impact on the biochemical properties(intra-cellular polysaccharides-IPSs,protein,lipid,total phenolic compounds-TPCs,individual carbohydrates composition of the IPSs)in the first-and second-flush whole mushrooms,pilei and stipes,as well as the fatty acids composition,the antioxidant activity(in the first-flush mushroom parts)and glucan content of stipes were examined.Both species produced satisfactory IPSs quantities in all substrates(28.69-46.38%,w/w)and significant protein amounts(18.37-26.80%,w/w).The further SMS addition(80%,w/w instead of 40%,w/w)in the cultivation substrates affected positively the mushroom IPSs values,whereas the highest protein content was detected in mushroom’s parts cultivated on substrates consisted of fresh agro-industrial residues.Mushroom’s lipid content was affected differently by the various substrate combinations,with SMS presence resulting in mushrooms with a lower fat content than those produced in substrates with PW addition.Fresh substrates with PW and those with coffee residue were the most favorable for TPCs production.Regarding production flushes,the nutritional value of mushrooms was comparable between them,only a slight increase in TPCs of second-flush carposomes was detected.Glucose was the predominant monosaccharide of the produced IPSs,combined with a significant production of total and β-glucans.SMSs and PW addition had a positive impact on antioxidant activity,too.A higher quantity of lipids,TPCs and significant antioxidant activity were detected in all Pleurotus pilei than stipes,whereas the latter were richer in IPSs.Both pilei and stipes had a significant protein amount.Hence,the data obtained by this study support the positive effect of different types of SMS and mushroom waste on P.ostreatus and P.eryngii nutritional value. 展开更多
关键词 PLEUROTUS Agro-industrial residues Spent mushroom substrate Stipes Pilei
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Advanced Thermochemical Conversion Approaches for Green Hydrogen Production from Crop Residues
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作者 Omojola Awogbemi Ayotunde Adigun Ojo Samson Adedayo Adeleye 《Journal of Renewable Materials》 EI CAS 2024年第1期1-28,共28页
The huge volumes of crop residues generated during the production,processing,and consumption of farm products constitute an ecological nuisance when ineffectively managed.The conversion of crop residues to green hydro... The huge volumes of crop residues generated during the production,processing,and consumption of farm products constitute an ecological nuisance when ineffectively managed.The conversion of crop residues to green hydrogen is one of the sustainable management strategies for ubiquitous crop residues.Production of green hydrogen from crop residue sources will contribute to deepening access to clean and affordable energy,mitigating climate change,and ensuring environmental sustainability.However,the deployment of conventional thermochemical technologies for the conversion of crop residues to green hydrogen is costly,requires long residence time,produces low-quality products,and therefore needs to be upgraded.The current review examines the conventional,advanced,and integrated thermochemical conversion technologies for crop residues for green hydrogen production.After a brief overview of the conventional thermochemical techniques,the review delves into the broad narration of advanced thermochemical technologies including catalytic pyrolysis,microwave pyrolysis,co-pyrolysis,hyropyrolysis,and autothermal pyrolysis.The study advocates the deployment of integrated pyrolysis,anaerobic digestion,pyrolysis,and gasification technologies will ensure scalability,decomposition of recalcitrant feedstocks,and generation of high grade green hydrogen.The outlook provides suggestions for future research into cost-saving and sustainable integrated technologies for green hydrogen production towards achieving carbon neutrality and a circular bio-economy. 展开更多
关键词 Crop residues carbon neutrality PYROLYSIS GASIFICATION green hydrogen thermochemical conversion
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Research Progress on Detection Techniques of Fungicide Residues in Chinese Chives
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作者 Xiuying CHEN Zhe MENG +5 位作者 Chen DING Huihui LIU Yancheng ZHOU Jinlu LI Yanhua YAN Lei WANG 《Agricultural Biotechnology》 2024年第1期43-48,共6页
Chinese chive is a kind of medicinal and edible plant,with many diseases,and chemical fungicides are usually used for control.In order to find out the risk of pesticide residues in Chinese chives,this paper summarized... Chinese chive is a kind of medicinal and edible plant,with many diseases,and chemical fungicides are usually used for control.In order to find out the risk of pesticide residues in Chinese chives,this paper summarized relevant literatures published in recent years,and sorted out and analyzed the types of pesticides used and detection techniques of common diseases in Chinese chives. 展开更多
关键词 Chinese chive Pesticide residues FUNGICIDE Detection technique
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Assessment of Contamination Degree of Oil Residues on a Former Agricultural Site
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作者 Marinela Florica Bodog Emil Catalin Schiopu +1 位作者 Ghita Cristian Crainic Andra Nicoleta Lazar 《Journal of Agricultural Science and Technology(A)》 2024年第2期67-82,共16页
In this study,our goal is to identify the land surface that has been polluted/degraded by petroleum products or other identified causes through laboratory analysis,to assess the depth of current contamination and to i... In this study,our goal is to identify the land surface that has been polluted/degraded by petroleum products or other identified causes through laboratory analysis,to assess the depth of current contamination and to identify the specific causes of contamination.The level of contamination will be assessed by analyzing a total of 90 soil samples,both within the first 30 cm depth and within the 30-60 cm interval.The potential impact of the petroleum activities and their effects on the environment and agricultural development in the area will be evaluated by studying the distribution of the chemical elements analyzed,particularly total petroleum hydrocarbons(TPH).In addition,a thematic map was created using MapSys 10.0 software based on their distribution,indicating the polluted areas using color codes and values.This analysis and mapping revealed that 7,473 square meters of the site were severely contaminated at 30 cm,representing approximately 25% of the site. 展开更多
关键词 Degradation oil POLLUTION residues soil surface thematic map
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Soybean Response to Weed Residues in the Soil
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作者 Dwayne D. Joseph Michael W. Marshall Matthew Cutulle 《Agricultural Sciences》 2024年第8期801-811,共11页
Soybean production systems that return plant residues to the soil surface are gaining in popularity. As these practices become more widespread, more crop and weed residues are being introduced into the upper soil prof... Soybean production systems that return plant residues to the soil surface are gaining in popularity. As these practices become more widespread, more crop and weed residues are being introduced into the upper soil profile. Greenhouse studies were conducted to determine the effects of varying concentrations of Palmer amaranth and pitted morningglory plant residues (aboveground portion of the plant) on soybean production. The study was arranged in a completely randomized experimental design with five treatments and five replications. Palmer amaranth and pitted morningglory residues were incorporated into soil at 20,000, 40,000, 80,000 and 160,000 ppm. Inert plastic residue at the same residue levels was included as a check. Soybean dry weight, leaf area and leaf tissue nutrient content were recorded during the study. A decrease in soybean dry weight and leaf area was observed as Palmer amaranth residue in the soil increased. Palmer amaranth residues of 160,000 ppm and 80,000 ppm in the soil significantly reduced soybean dry weight by 69% and 59%, respectively, and soybean leaf area by 60% and 57%, respectively. In contrast, pitted morningglory and inert plastic residues had no observable effect on soybean growth and development. This study demonstrated Palmer amaranth residues in the soil impacted early season soybean growth and development. 展开更多
关键词 Reduced Tillage Plant residues ALLELOPATHY Glycine max L.
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Valorization of Agricultural Residues for Hydrogen-Based Electricity Generation towards Circular Bioeconomy
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作者 Patience Afi Seglah Komikouma Apelike Wobuibe Neglo 《Open Journal of Energy Efficiency》 2024年第2期57-78,共22页
Global crises, notably climate shocks, degraded ecosystems, and growing energy demand, enforce sustainable production and consumption pathways. A circular bioeconomy offers the opportunities to actualize resource and ... Global crises, notably climate shocks, degraded ecosystems, and growing energy demand, enforce sustainable production and consumption pathways. A circular bioeconomy offers the opportunities to actualize resource and eco-efficiency enhancement, valorization of waste streams, reduction of fossil energy and greenhouse gas (GHG) emissions. Albeit biomass resources are a potential feedstock for bio-hydrogen (bio-H2) production, Ghana’s agricultural residues are not fully utilized. This paper examines the economic and environmental impact of bio-H2 electricity generation using agricultural residues in Ghana. The bio-H2 potential was determined based on biogas steam reforming (BSR). The research highlights that BSR could generate 2617 kt of bio-H2, corresponding to 2.78% of the global hydrogen demand. Yam and maize residues contribute 50.47% of the bio-H2 produced, while millet residues have the most negligible share. A tonne of residues could produce 16.59 kg of bio-H2 and 29.83 kWh of electricity. A total of 4,705.89 GWh of electricity produced could replace the consumption of 21.92% of Ghana’s electricity. The economic viability reveals that electricity cost is $0.174/kWh and has a positive net present value of $2135550609.45 with a benefit-to-cost ratio of 1.26. The fossil diesel displaced is 1421.09 ML, and 3862.55 kt CO2eq of carbon emissions decreased corresponding to an annual reduction potential of 386.26 kt CO2eq. This accounts for reducing 10.26% of Ghana’s GHG emissions. The study demonstrates that hydrogen-based electricity production as an energy transition is a strategic innovation pillar to advance the circular bioeconomy and achieve sustainable development goals. 展开更多
关键词 Agricultural residues Biogas Steam Reforming BIO-HYDROGEN ELECTRICITY Circular Bioeconomy
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A timing self-cleaning nanoherbicide:Design of triple-structure nanovectors for weed control and pesticide residues treatment
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作者 Jiao Cheng Mei Li +3 位作者 Ri-xin Zhu Jing-yi Li Jun Yin Wang Xiao 《Advanced Agrochem》 2024年第4期298-307,共10页
Pesticide residues treatment is a crucial issue for both agricultural production and environmental protection.In recent years,designing self-cleaning nanoformulations has emerged as a promising strategy for reducing p... Pesticide residues treatment is a crucial issue for both agricultural production and environmental protection.In recent years,designing self-cleaning nanoformulations has emerged as a promising strategy for reducing pesticide residues in a convenient and cost-effective manner.However,traditional physical blending methods of photodegradation reagents with nanocarriers have limitations in terms of pesticide residue degradation efficiency and active ingredient efficacy.Here,a new type of timing self-cleaning nanoherbicide dicamba@mSiO_(2)/ATA/TiO_(2)with a triple structure was fabricated.Dicamba,a widely used herbicide that was attracting increasing concern over its high efficiency and broad spectrum,was selected as the model herbicide and loaded on the mSiO_(2)shell.In the stage of pesticide release,the TiO_(2)and dicamba were separated by the timing-barrier.Therefore,the efficacy of dicamba was not affected by the photocatalyst.During the release process,the ATA layer continuously absorbed the reactive oxygen species(ROS)produced by TiO_(2)and was gradually degraded.Finally,the barrier was destroyed,and the residual dicamba in the carrier was degraded by TiO_(2).Compared with the traditional physical blending method,this triple structure avoided the degradation of active ingredients by photocatalysts during the pesticide release period.The experimental results suggested that this nanoformulation improved the efficacy of the herbicide,and reduced the pesticide residues,providing a new approach for self-cleaning nanopesticides research. 展开更多
关键词 Nanopesticide SELF-CLEANING Pesticide residues Photocatalytic degradation
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Disposal of zinc extraction residues via iron ore sintering process:an innovative resource utilization 被引量:3
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作者 Chun-long Fan Cheng-yi Ding +4 位作者 Tao Yang Yun-fei Luo Yi-fan Wang Qian Li Hong-ming Long 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2024年第7期1636-1645,共10页
Zinc extraction residue,a solid waste generated from the treatment of zinc-containing dust in rotary kilns,is commonly stockpiled in steel companies for extended periods.It poses significant disposal challenges and en... Zinc extraction residue,a solid waste generated from the treatment of zinc-containing dust in rotary kilns,is commonly stockpiled in steel companies for extended periods.It poses significant disposal challenges and environmental pollution risks.So far,research on the treatment of zinc extraction residues has been slow,inadequate,and sporadic.For this gap,a novel approach was proposed to effectively treat the zinc extraction residue via the iron ore sintering process.It was feasible to add 1 wt.%of zinc extraction residues to the sintering raw materials.The more adequate mineralization reaction resulted in higher yield and tumbler indexes,despite a slight decrease in sintering speed.Although this may result in a slight decrease in sintering speed,the more complete mineralization reaction leads to improved sintering yield and tumbler index.Interestingly,the addition of zinc extraction residues reduced the CO and NO_(x) concentrations in the sintering flue gas.Thus,the iron ore sintering process provided a viable solution for resource utilization and environmentally friendly treatment of zinc extraction residues. 展开更多
关键词 Zinc extraction residue Iron ore sintering CO-PROCESSING Waste utilization Gas pollutant reduction
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Furfural residues derived nitrogen-sulfur co-doped sheet-like carbon: An excellent electrode for dual carbon lithium-ion capacitors 被引量:1
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作者 Xiaoying Guo Yan Qiao +4 位作者 Zonglin Yi Christian Marcus Pedersen Yingxiong Wang Xiaodong Tian Peide Han 《Green Energy & Environment》 SCIE EI CAS CSCD 2024年第9期1427-1439,共13页
The state-of-the-art lithium-ion capacitors (LICs),consisting of high-capacity battery-type anode and high-rate capacitor-type cathode,can deliver high energy density and large power density when comparing with tradit... The state-of-the-art lithium-ion capacitors (LICs),consisting of high-capacity battery-type anode and high-rate capacitor-type cathode,can deliver high energy density and large power density when comparing with traditional supercapacitors and lithium-ion batteries,respectively.However,the ion kinetics mismatch between cathode and anode leads to unsatisfied cycling lifetime and anode degradation.Tremendous efforts have been devoted to solving the abovementioned issue.One promising strategy is altering high conductive hard carbon anode with excellent structural stability to match with activated carbon cathode,assembling dual-carbon LIC.In this contribution,one-pot in-situ expansion and heteroatom doping strategy was adopted to prepare sheet-like hard carbon,while activated carbon was obtained involving activation.Ammonium persulfate was used as expanding and doping agent simultaneously.While furfural residues (FR) were served as carbon precursor.The resulting hard carbon (FRNS-HC) and activated carbon (FRNS-AC)show excellent electrochemical performance as negative and positive electrodes in a lithium-ion battery (LIB).To be specific,374.2 m Ah g^(-1)and 123.1 m Ah g^(-1)can be achieved at 0.1 A g^(-1)and 5 A g^(-1)when FRNS-HC was tested as anode.When combined with a highly porous carbon cathode (S_(BET)=2961 m^(2)g^(-1)) synthesized from the same precursor,the LIC showed high specific energy of147.67 Wh kg^(-1)at approximately 199.93 W kg^(-1),and outstanding cycling life with negligible capacitance fading over 1000 cycles.This study could lead the way for the development of heteroatom-doped porous carbon nanomaterials applied to Li-based energy storage applications. 展开更多
关键词 Furfural residue Ammonium persulfate Sheet-like carbon Lithium-ion capacitors Hard carbon
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