Cu-Mn-EFBC的制备及其对水中TCH的吸附机理研究  

Preparation of Cu-Mn-EFBC and its adsorption mechanism for TCH in water

作　　者：董颖虹 李红艳[1,2] 崔建国 冯坤[1,2] 李尚明 王芳 DONG Ying-hong;LI Hong-yan;CUI Jian-guo;FENG Kun;LI Shang-ming;WANG Fang(College of Environmental Science and Engineering,Taiyuan University of Technology,Jinzhong 030600,China;Shanxi Municipal Engineering Graduate Education Innovation Center,Jinzhong 030600,China;College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Research Center for Edible Fungi,Biological Institute of Shanxi Province,Taiyuan 030006,China;Shanxi Key Laboratory of Edible Fungi for Loess Plateau,Taigu 030801,China)

机构地区：[1]太原理工大学环境科学与工程学院,山西晋中030600 [2]山西省市政工程研究生教育创新中心,山西晋中030600 [3]太原理工大学材料科学与工程学院,山西太原030024 [4]山西省生物研究院有限公司食用菌研究中心,山西太原030006 [5]黄土高原食用菌山西省重点实验室,山西太谷030801

出　　处：《应用化工》2023年第2期426-432,438,共8页Applied Chemical Industry

基　　金：山西省重点研发计划-社会发展领域(201803D31046);山西省科技成果转化引导专项(201904D131065);吕梁市引进高层次科技人才重点研发项目(2021RC-1-22)。

摘　　要：为实现农业废弃物废菌棒(EF)资源化利用,使用CuCl_(2)·2H_(2)O和KMnO4对低温制备的EF生物炭(EFBC)进行改性,制备出铜锰改性EFBC(Cu-Mn-EFBC),对其进行了SEM、BET、XRD、FTIR、Zeta电位和EA表征分析,并研究了制备条件和反应条件对Cu-Mn-EFBC吸附水中盐酸四环素(TCH)的影响及机理。结果表明:Cu-Mn-EFBC对水中TCH的去除率为90.03%,远高于EFBC对TCH的去除率(21.44%);生物炭的投加量和离子强度对吸附影响较小,溶液pH值影响较大;拟二级动力学方程和Freundlich方程可更好地拟合吸附过程。吸附机理主要为阳离子-π作用、π-π相互作用、氢键作用和络合反应。In order to realize the resource utilization of agricultural waste waste fungus sticks(EF),KMnO4and CuCl_(2)·2H_(2)O were used to modify EF biochar(EFBC)prepared at low temperature to prepare copper-manganese modified EFBC(Cu-Mn-EFBC).SEM,BET,XRD,FTIR,Zeta potential and EA characterization were carried out,and the effects of preparation and reaction conditions on the adsorption of tetracycline hydrochloride(TCH)in water by Cu-Mn-EFBC were investigated and the mechanism was analyzed.The results showed that the removal rate of TCH by Cu-Mn-EFBC was 90.03%,which was much higher than that of EFBC(21.44%),the dosage of biochar and ionic strength had little effect on the adsorption,and the pH value of the solution has a great influence;the pseudo-second-order kinetic equation and the Freundlich equation can better fit the adsorption process.The adsorption mechanism is mainly cation-πinteraction,π-πinteraction,hydrogen bonding and complexation reaction.

关 键 词：废菌棒生物炭 制备 吸附 盐酸四环素 机理分析 

分 类 号：TQ424[化学工程] X703[环境科学与工程—环境工程] R978.1[医药卫生—药品]