摘要
针对废水中的碱性品红,以改性玉米秸秆为吸附剂,比较了不同方法改性后的玉米秸秆对碱性品红吸附效果,确定了碱改性玉米秸秆对碱性品红吸附效果最好。考察了不同热力学条件下碱改性玉米秸秆对碱性品红吸附情况,探讨了改性玉米秸秆吸附碱性品红的吸附动力学、吸附等温方程。结果表明,废水中碱性品红去除率最大可达到99.6%;吸附容量可达100.00 mg/g,高于现有已报道的相似材料的吸附容量。吸附过程为吸热反应,提高温度有助于提高吸附率。Langmuir型吸附等温方程拟合效果更好;吸附动力学符合准二级动力学模型。
Regarding basic fuchsin in wastewater,modified corn straw was used as an adsorbent to compare the adsorption effects of different methods of modified corn straw on basic fuchsin.It was determined that alkaline modified corn straw had the best adsorption effect on basic fuchsin.The adsorption of basic fuchsin by alkali modified corn straw under different thermodynamic conditions had been investigated,and the adsorption kinetics and adsorption isotherms of basic fuchsin on alkaline modified corn straw also had been explored.The results showed that the maximum removal rate of basic fuchsin in wastewater reached 99.6%.The adsorption capacity reached 100.00 mg/g,which is higher than the adsorption capacity of similar materials reported currently.The adsorption process is an endothermic reaction,and increasing the temperature helps to improve the adsorption rate.The Langmuir adsorption isotherm equation has a better fitting effect,and the adsorption kinetics conforms to a quasi-second order kinetic model.
作者
李薇
李政
马宏飞
李聪
魏东凯
LI Wei;LI Zheng;MA Hongfei;LI Cong;WEI Dongkai(School of Environmental&Safety Engineering,Liaoning Petrochemical University,Fushun 113001,China;Fushun Ecological Environment Protection Comprehensive Administrative Law Enforcement Lochus,Fushun 113001,China)
出处
《应用化工》
北大核心
2025年第1期120-125,共6页
Applied Chemical Industry
基金
辽宁省教育厅面上项目(LJKZ0379)
辽宁省教育厅基本科研项目(LJKMZ20220722)
抚顺市“抚顺英才计划”(FSYC202107006)。
关键词
改性玉米秸秆
吸附
碱性品红
吸附动力学
吸附热力学
modified corn straw
adsorption
basic fuchsin
adsorption kinetics
adsorption thermodynamics
