修复氯代烃污染的生物炭负载纳米零价铁制备条件优化实验

doi:10.19741/j.issn.1673-4831.2019.0554

生态与农村环境学报 ›› 2019, Vol. 35 ›› Issue (12): 1626-1632.doi: 10.19741/j.issn.1673-4831.2019.0554

修复氯代烃污染的生物炭负载纳米零价铁制备条件优化实验

王祥^1,2,3, 邓绍坡², 李川^1,3, 万金忠²

1. 南京林业大学生物与环境学院/南方现代林业协同创新中心, 江苏南京 210037;
2. 生态环境部南京环境科学研究所/国家环境保护土壤环境管理与污染控制重点实验室, 江苏南京 210042;
3. 江苏洪泽湖湿地生态系统国家定位观测研究站, 江苏洪泽 223100

收稿日期:2019-07-22 发布日期:2019-12-21
通讯作者: 李川, 万金忠 E-mail:lichuan_2001@hotmail.com;wjz@nies.org
作者简介:王祥(1993-),男,安徽铜陵人,硕士生,研究方向为土壤环境管理与污染控制。E-mail:969407538@qq.com
基金资助:
国家自然科学基金（41571316）；中央级公益性科研院所基本科研业务专项（GYZX190105）

Optimization of Preparation Conditions for Biochar-Loaded Nano-Zero-Valent Iron With Chlorinated Hydrocarbons

WANG Xiang^1,2,3, DENG Shao-po², LI Chuan^1,3, WAN Jin-zhong²

1. College of Biology and the Environment/Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China;
2. Nanjing Institute of Environmental Sciences/State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Ministry of Ecology and Environment, Nanjing 210042, China;
3. National Positioning Observation Station of Hongze Lake Wetland Ecosystem in Jiangsu Province, Hongze 223100, China

Received:2019-07-22 Published:2019-12-21

摘要/Abstract

摘要： 通过液相还原法制备花生壳生物炭负载纳米零价铁材料（nZVI/BC），并采用元素分析、比表面积和扫描电镜等多种表征方法以获得其结构性质，研究了nZVI/BC材料对3种常见的氯代有机污染物（三氯甲烷、氯苯、三氯乙烯）混合配制的模拟地下水中污染物的去除效果。结果表明，300℃热解的花生壳生物炭（BC）收益率最高，为44.07%，结构上相对而言保存较完整；纳米零价铁（nZVI）在花生壳BC表面负载较均匀，没有出现大的团聚，呈现链状结构。投加量相同时，炭铁质量比为2：1的复合材料对混合污染物的整体去除效果较好，对三氯甲烷的去除率为66.59%，三氯乙烯为72.40%，氯苯为74.85%。

关键词: 生物炭, 生物炭负载纳米零价铁, 氯代污染物, 地下水

Abstract: The peanut shell biochar-loaded nano-zero-valent iron material (nZVI/BC) was prepared by liquid phase reduction method. The structural properties of the material were obtained by elemental analysis, specific surface area and scanning electron microscopy. The effect of nZVI/BC materials on the removal of pollutants in simulated groundwater prepared by mixing three common chlorinated organic pollutants (chloroform, chlorobenzene, trichloroethylene) was studied. The results show that the BC yield of 300℃ pyrolysis is up to 44.07%, and the structure is relatively intact. The nZVI has a uniform load on the surface of the peanut shell BC, and there is no large agglomeration, showing a chain structure. When the dosage is the same, the composite with carbon to iron ratio of 2:1 has better effect on the overall removal of mixed pollutants. The removal rate of chloroform is 66.59%, trichloroethylene is 72.40%, and chlorobenzene is 74.85%.

Key words: biochar, biochar-nano zero-valent iron composite, chlorinated pollutant, groundwater

中图分类号:

X826

王祥, 邓绍坡, 李川, 万金忠. 修复氯代烃污染的生物炭负载纳米零价铁制备条件优化实验[J]. 生态与农村环境学报, 2019, 35(12): 1626-1632.

WANG Xiang, DENG Shao-po, LI Chuan, WAN Jin-zhong. Optimization of Preparation Conditions for Biochar-Loaded Nano-Zero-Valent Iron With Chlorinated Hydrocarbons[J]. Journal of Ecology and Rural Environment, 2019, 35(12): 1626-1632.

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修复氯代烃污染的生物炭负载纳米零价铁制备条件优化实验

Optimization of Preparation Conditions for Biochar-Loaded Nano-Zero-Valent Iron With Chlorinated Hydrocarbons

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