改性玉米芯对水中2,4,6-三氯酚的吸附研究  

Study on adsorption properties of modified corncob for 2,4,6-trichlorophenol

作　　者：谭彩荷 熊晓莉 TAN Cai-he;XIONG Xiao-li(College of Environment and Resource,Chongqing Technology and Business University,Chongqing 400067,China)

机构地区：[1]重庆工商大学环境与资源学院,重庆400067

出　　处：《应用化工》2019年第3期533-536,共4页Applied Chemical Industry

基　　金：国家自然科学基金(20907076)

摘　　要：通过化学改性的玉米芯(MC),用于去除水中的2,4,6-三氯酚(TCP)。研究了吸附的影响因素,确定了最优的实验条件。研究表明,298 K下,MC对初始浓度为225 mg/L的TCP溶液中TCP的平衡吸附量达到215.4 mg/g。吸附动力学符合准二级动力学模型,吸附等温式符合Temkin模型。改性玉米芯可有效去除水中的TCP,是一种有应用潜力的吸附材料。Modified corncob (MC) by chemical method was used for remove the 2,4,6-trichlorophenol (TCP) in the solution.The effects of various experimental parameters were examined and optimal experimental conditions were determined.The adsorption capacity of TCP on MC was up to 215.4 mg/g when initial concentration of TCP solution was 225 mg/L at 298 K.Adsorption kinetics followed the pseudo-second-order equation in the concentration range studied.Equilibrium isotherm data were satisfactorily fitted by the Temkin equation.This study confirmed that modified corncob was an excellent attractive adsorbent for removal of TCP from aqueous solution.

关 键 词：2 4 6-三氯酚 玉米芯 吸附 动力学 热力学参数 

分 类 号：TQ44[化学工程—化学肥料工业]