凹凸棒负载硫化纳米零价铁去除水中六价铬  

Removal of Hexavalent Chromium from Water by Attapulgate-Supported Sulfidized Nanoscale Zero-Valent Iron

作　　者：冯紫琴 方慧 董任行 徐轶群[1] 薛文静 FENG Ziqin;FANG Hui;DONG Renhang;XU Yiqun;XUE Wenjing

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225009

出　　处：《化工设计通讯》2025年第2期98-100,共3页Chemical Engineering Design Communications

基　　金：江苏省自然科学基金青年基金项目(BK20210830);扬州大学2024年大学生创新创业训练计划(XCX20240641)。

摘　　要：制备了凹凸棒负载硫化纳米零价铁(S-nZVI@ATP)材料用于去除水中Cr(Ⅵ)。利用SEM和TEM分析材料形貌,考察不同体系、材料投加量对Cr(Ⅵ)的去除效果,并采用吸附动力学考察材料对Cr(Ⅵ)的吸附行为。结果表明,S-nZVI@ATP投加量为1.0 g·L^(-1),60 min对水中Cr(Ⅵ)的去除率高达97.93%,显著优于ATP和S-nZVI。且S-nZVI@ATP对Cr(Ⅵ)的吸附更符合准二级动力学模型,其吸附过程主要为化学吸附。The attapulgate-supported sulfi dized nanoscale zero-valent iron(S-nZVI@ATP)material was prepared for the removal of Cr(Ⅵ)from water.The morphology of the material was analyzed by SEM and TEM,and the removal effect of Cr(Ⅵ)was investigated by different systems and dosage of the material,and the adsorption behavior of Cr(Ⅵ)was determined by adsorption kinetics.The results showed that the removal rate of Cr(VI)was 97.93%when the dosage of S-nZVI@ATP was 1.0 g·L^(-1) for 60 min,which was signifi cantly better than ATP and S-nZVI.Moreover,the adsorption of Cr(Ⅵ)by S-nZVI@ATP was more consistent with the quasi-second-order kinetic model,and the adsorption process was mainly chemisorption.

关 键 词：硫化纳米零价铁 凹凸棒 六价铬 吸附动力学 

分 类 号：X703[环境科学与工程—环境工程]