棉秆改性污泥生物炭复合材料吸附去除水中氯霉素  

Adsorption and Removal of Chloramphenicol from Water Using Cotton Stalk Modified Sludge Biochar Composites

作　　者：刘思贤 徐蕾 杨云帅 马小倩 LIU Sixian;XU Lei;YANG Yunshuai;MA Xiaoqian(Xinjiang Normal University,Urumqi Xinjiang 830054,China)

机构地区：[1]新疆师范大学,新疆乌鲁木齐830054

出　　处：《当代化工》2025年第3期649-654,共6页Contemporary Chemical Industry

摘　　要：氯霉素因其出色的抗菌性能和低成本,被广泛用于医学、畜牧业和水产养殖中。但是,环境中的氯霉素残留物可以通过食物链在人体内积累,过量摄入可能导致严重的不良反应。以棉秆和垃圾场污泥作为原材料,制备棉秆改性污泥生物炭复合材料用于吸附水中的氯霉素。吸附实验结果表明:在热解温度为800℃、棉秆添加质量分数为10%时以及投加量为0.5g·L^(-1)的条件下生物炭对氯霉素吸附效果最好,去除率达到100%。吸附动力学分析结果表明:该吸附剂更符合准二级动力学模型,对水中氯霉素的吸附主要为化学吸附;等温线吸附更符合Sips模型,最大吸附量为107.85mg·g^(-1)。Chloramphenicol,owing to its remarkable antibacterial properties and low cost,is extensively utilized in medicine,animal husbandry,and aquaculture.However,residual chloramphenicol in the environment can accumulate in the human body through the food chain,with excessive intake potentially leading to severe adverse reactions.In this paper,cotton stalks and sludge from waste sites were used as raw materials to prepare cotton stalk modified sludge biochar composites for the adsorption of chloramphenicol from water.Adsorption experimental results demonstrated that the biochar exhibited optimal adsorption performance for chloramphenicol at pyrolysis temperature of 800℃,with cotton stalk mass fraction of 10%,and dosage of 0.5 g·L^(-1),achieving removal efficiency of 100%.Adsorption kinetic analysis results indicated that the adsorbent conformed more closely to the pseudo-second-order kinetic model,suggesting that the adsorption of chloramphenicol by the adsorbent in water was predominantly chemical in nature.The adsorption isotherm was better fitted by Sips model,with the maximum adsorption capacity of 107.85 mg·g^(-1).

关 键 词：生物质 环境 动力学模型 吸附剂 氯霉素 

分 类 号：TQ424.3[化学工程]