Burnable municipal solid waste is disposed sanitarily at incinerator plants, which leads decrease of environmental load. At the same time, WTE （waste-to-energy） is realized as recovery of energy. WTE, however, has w...Burnable municipal solid waste is disposed sanitarily at incinerator plants, which leads decrease of environmental load. At the same time, WTE （waste-to-energy） is realized as recovery of energy. WTE, however, has weakness of low generation efficiency and output in Japan due to smaller capacity of incinerator plants. To overcome above weakness, high efficient WTE is necessary with total integration and scaling up of incinerator plants. In addition FIT （feed-in tariff） has been started recently in Japan. When planning, we must consider totally both cost of incinerator plants and cost of refuse collection which is important role for the waste disposal. The planning method whose target is an urban area has formulated in this study. Considering the situation of the decrease trend of refuse volume and the strict finance condition of a local government, so that the proposed method is very effective.展开更多
Herein,the innovative hybrid photocatalyst PET-based Zn-MOF on orange peel biochar(BC)(PZM/BC)was designed and synthesized via the hydrothermal method.Electrochemical methods have been used to demonstrate the action o...Herein,the innovative hybrid photocatalyst PET-based Zn-MOF on orange peel biochar(BC)(PZM/BC)was designed and synthesized via the hydrothermal method.Electrochemical methods have been used to demonstrate the action of the PET-MOF in the PZM/BC photocatalyst as a medium for electron transfer.The latter involved the synthesis of a zinc-containing metal-organic framework(MOF)in which the linkers were derived from the depolymerization of polyethylene terephthalate(PET)originating from plastic wastes.According to research,the catalytic reactions are sped up when porous BC and linker PET are assimilated into PZM/BC photocatalyst hetero-junction.Furthermore,BC stored electrons under light and released these electrons under dark conditions.When BC was combined with PET-MOF,the electrons on the biochar activated the catalytic redox activity of acetaminophen.Additionally,it lowers the reassimilation rate due to the combined meshed nanostructures and functionality of PET-MOF and PZM/BC.UV-Vis DRS,Mott-Schottky,Photoluminescence(PL),and Electrochemical Impedance spectra(EIS)results showed that the PZM/BC exhibited efficient spatial separation and transportation of photogenerated charge carriers and exhibited superior photocatalytic ability.Electron spin resonance(ESR)analysis confirmed that⋅OH and h+were the predominant radical species responsible for the degradation of acetaminophen(ACT).The optimum conditions for ACT removal were observed at pH 6.07,with a PZM/BC dosage of 0.1 g L^(−1),and an initial ACT concentration of 50 mg L^(−1),highlighting the pivotal role of the PZM/BC system in ACT degradation.Furthermore,potential photocatalytic degradation pathways of ACT were inferred renders on the identified intermediates which are responsible for the degradation of refractory intermediates.Regeneration trials were carried out to assess the stability of the photocatalyst.Additionally,the degraded intermediates generated during the degradation processes were examined,providing a comprehensive elucidation of the degradation mechanism.展开更多
文摘Burnable municipal solid waste is disposed sanitarily at incinerator plants, which leads decrease of environmental load. At the same time, WTE （waste-to-energy） is realized as recovery of energy. WTE, however, has weakness of low generation efficiency and output in Japan due to smaller capacity of incinerator plants. To overcome above weakness, high efficient WTE is necessary with total integration and scaling up of incinerator plants. In addition FIT （feed-in tariff） has been started recently in Japan. When planning, we must consider totally both cost of incinerator plants and cost of refuse collection which is important role for the waste disposal. The planning method whose target is an urban area has formulated in this study. Considering the situation of the decrease trend of refuse volume and the strict finance condition of a local government, so that the proposed method is very effective.
基金support for this study was provided by the Korean government through the National Research Foundation of Korea(NRF),under Grant No.2022R1A2B5B02001584.
文摘Herein,the innovative hybrid photocatalyst PET-based Zn-MOF on orange peel biochar(BC)(PZM/BC)was designed and synthesized via the hydrothermal method.Electrochemical methods have been used to demonstrate the action of the PET-MOF in the PZM/BC photocatalyst as a medium for electron transfer.The latter involved the synthesis of a zinc-containing metal-organic framework(MOF)in which the linkers were derived from the depolymerization of polyethylene terephthalate(PET)originating from plastic wastes.According to research,the catalytic reactions are sped up when porous BC and linker PET are assimilated into PZM/BC photocatalyst hetero-junction.Furthermore,BC stored electrons under light and released these electrons under dark conditions.When BC was combined with PET-MOF,the electrons on the biochar activated the catalytic redox activity of acetaminophen.Additionally,it lowers the reassimilation rate due to the combined meshed nanostructures and functionality of PET-MOF and PZM/BC.UV-Vis DRS,Mott-Schottky,Photoluminescence(PL),and Electrochemical Impedance spectra(EIS)results showed that the PZM/BC exhibited efficient spatial separation and transportation of photogenerated charge carriers and exhibited superior photocatalytic ability.Electron spin resonance(ESR)analysis confirmed that⋅OH and h+were the predominant radical species responsible for the degradation of acetaminophen(ACT).The optimum conditions for ACT removal were observed at pH 6.07,with a PZM/BC dosage of 0.1 g L^(−1),and an initial ACT concentration of 50 mg L^(−1),highlighting the pivotal role of the PZM/BC system in ACT degradation.Furthermore,potential photocatalytic degradation pathways of ACT were inferred renders on the identified intermediates which are responsible for the degradation of refractory intermediates.Regeneration trials were carried out to assess the stability of the photocatalyst.Additionally,the degraded intermediates generated during the degradation processes were examined,providing a comprehensive elucidation of the degradation mechanism.
