生物质气化发电副产品吸附阿莫西林特性研究  

Adsorption Properties of Amoxicillin on the Byproduct of Biomass Gasification Power Generation

作　　者：史娟娟 陈颖 郝若楠 曹澄澄 缪旭东 倪宇青 张学杨[1] SHI Juan-juan;CHEN Ying;HAO Ruo-nan;CAO Cheng-cheng;MIAO Xu-dong;NI Yu-qing;ZHANG Xue-yang(School of Environmental Engineering,Xuzhou College of Engineering,Xuzhou 221018,China)

机构地区：[1]徐州工程学院环境工程学院,江苏徐州221018

出　　处：《环境科技》2020年第2期22-26,共5页Environmental Science and Technology

基　　金：江苏省高等学校自然科学研究重大项目(18KJA610003);徐州市科技计划项目(KC18150);徐州工程学院科研项目(XKY2018136)资助.

摘　　要：生物质气化发电多联产技术是一种生物质新能源开发方式,其副产品生物炭的高效利用是影响该技术市场化推广的一个重要因素。通过制备小麦秸秆生物炭并进行了理化表征,研究了其对水中阿莫西林的吸附特性,考察了吸附动力学、吸附等温线,评价了pH值、离子浓度等对吸附的影响。结果表明:热解温度越高,所得生物炭的比表面积越大;低热解温度所得生物炭对阿莫西林的吸附质量比最大,可达55.25 mg/g;吸附动力学符合伪二级动力学模型;在一定范围内,提高吸附温度可以增加生物炭对阿莫西林的吸附量;最佳吸附pH值为7;金属离子Na+浓度的增加会导致吸附量的减少。Biomass gasification-power generation polygeneration technology is a novel method to produce biomass energy.The efficient utilization of its by-product biochar is an important factor influencing the marketization of the technology.In this paper,the adsorption characteristics of wheat straw biochar toward amoxicillin in water were studied.Wheat straw biochar was prepared and characterized,and its adsorption kinetics and isotherm toward amoxicillin in water were studied.The effects of pH value and ion concentration on adsorption were investigated.The results showed that the higher the pyrolysis temperature,the larger the specific surface area of biochar.Under the same condition,the biochar produced at low pyrolysis temperature has the most adsorption capacity of 55.25 mg/g.The adsorption kinetics fit with the pseudo-second-order kinetic model.The adsorption capacity of amoxicillin could be increased by increasing the temperature within a certain range.The optimal adsorption pH value is 7.The increase of Na+concentration of metal ions will lead to the decrease of adsorption capacity.

关 键 词：生物炭 抗生素 阿莫西林 小麦秸秆 吸附 

分 类 号：X5[环境科学与工程—环境工程]