废旧锌锰电池回收制备菱形三氧化二锰及其对染料吸附性能研究  

Preparation of diamond polyhedron Mn_2O_3 from spent zinc-manganese battery and its adsorption performance for dye

作　　者：白婷婷 康静文[1] 肖坤儒 沙艳云 BAI Ting-ting;KANG Jing-wen;XIAO Kun-ru;SHA Yan-yun(College of Environment Science and Engineering, Taiyuan University of Technology, Taiyuan 030000, China;College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China)

机构地区：[1]太原理工大学环境科学与工程学院,山西太原030000 [2]武汉轻工大学化学与环境工程学院,湖北武汉430023

出　　处：《应用化工》2018年第4期741-745,749,共6页Applied Chemical Industry

基　　金：山西省科技厅自然科学基金(2014012007)

摘　　要：提取废旧锌锰电池中的锰氧化物灼烧制备Mn_2O_3,利用X射线衍射分析仪和扫描电子显微镜对产物进行表征。通过系列吸附实验探究Mn_2O_3作为吸附剂对甲基橙和茜素红染料的吸附机理和最佳吸附条件。结果表明,产物是粒径为500~1 000 nm的菱形多面体结构Mn_2O_3,对甲基橙和茜素红的吸附动力学均符合准二级动力学方程,热力学均符合Langmuir吸附方程;在最佳吸附条件pH值为2、吸附时间180 min、染料初始浓度为30 mg/L、Mn_2O_3投加量分别为24.62,35.56 g/g时,甲基橙和茜素红的吸附效果最佳。Mn2O3 was prepared by calcining manganese oxides obtained from spent zinc-manganese dry battery,and the sample was characterized by X-ray diffraction（ XRD） and scanning electron microscopy（ SEM）. The adsorption mechanism and optimum adsorption conditions of Mn2O3 for the methyl orange and Alizarin red were studied through a series of adsorption experiments. The results show that the product Mn2O3 is diamond polyhedron with a diameter of 500 ~ 1 000 nm,the adsorption kinetics of Mn2O3 for the methyl orange and Alizarin red are both in accordance with the pseudo-second-order kinetic equation and adsorption thermodynamics are in accordance with Langmuir isotherm formula. The optimum adsorption effect achieves under the optimum conditions of pH 2,adsorption time 180 min,initial concentration30 mg/L,Mn2O3 dosage 24. 62,35. 56 g/g respectively.

关 键 词：废旧锌锰电池 MN2O3 吸附 甲基橙 茜素红 

分 类 号：TQ61[化学工程—精细化工]