Functional biochar for efficient residue treatment of sulfonylurea herbicides by weak molecular interaction

作     者：Yunpeng Zhang Bingjie Zhang Jingyang Yu Meng Yuan Jiawen Ji Huizhe Lu Yongqiang Ma Yunlong Guo 

作者机构：College of ScienceChina Agricultural UniversityBeijing 100193China Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China 

出 版 物：《Biochar》 (生物炭（英文）)

年 卷 期：2021年第3卷第4期

页      面：545-556页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：This work was supported by the national key research and development program of China(2016YFD0201203) municipal innovative training program for college students of Beijing(2017Bj093) the special fund for agro-scientific research in the public interest(201203098) Beijing nova program interdisciplinary studies cooperative project(Z171100001117130) National Nature Science Foundation of China(21873115) 

主　　题：Agricultural waste recycling Adsorption Molecular simulation Mechanisms Sulfonylurea herbicides 

摘      要：Pesticide residues have seriously damaged the natural environment and social ***,we prepared the efficient functional biochar(FB)for sulfonylurea herbicides from cotton straw cellulose(CSC)by hydrothermal carbonization with the methacrylic *** molecular simulation of FB indicated thatπ-πelectron-donor-acceptor(EDA)interaction and formation of charge-assisted H-bond were both the main factors for effective adsorption *** adsorption process can match the pseudo-second-order kinetic equation and Freundlich *** whole process is physical adsorption,spontaneous and rapid,and can quickly reach *** FB with carbon-oxygen functional groups and aromatic conjugated structures can remove pesticides in water very quickly(within 30 s),with effective adsorption over 95%of Sulfonylurea herbicides(SUHs).Therefore,functional FB might be an effective way to get excellent absorbent for pesticide treatment.