不同生物质炭材料对土壤中铬的吸附研究  

Chromium Adsorption in Soil by Different Biochars Prepared from Different Biomass

作　　者：马璐 卢春意[1,2,3] 左卫元 欧阳辉祥 Ma Lu;Lu Chunyi;Zuo Weiyuan;Ouyang Huixiang(College of Chemistry&Environmental Engineering,Baise University,Baise 533000,China;Key Laboratory of Regional Ecological Environment Analysis and Pollution Control in Western Guangxi(Baise University),Baise 533000,China;Organization Department of CPC Jingxi Municipal Committee,Baise 533800,China)

机构地区：[1]百色学院化学与环境工程学院,广西百色533000 [2]桂西区域生态环境分析和污染控制实验室(百色学院),广西百色533000 [3]中共靖西市委组织部,广西百色533800

出　　处：《皮革制作与环保科技》2023年第24期135-137,共3页Leather Manufacture and Environmental Technology

摘　　要：生物质炭材料已被证实具有较好的孔隙结构以及多种官能团,对土壤中的重金属及其他有机物具有一定的吸附效果,因此被应用于水体及土壤的修复。本研究以花生壳、荔枝皮、桔子皮作为原料,使用5%氯化锌溶液对原料进行改性,通过热解法制备生物质炭,研究不同改性生物质炭对铬污染土壤的吸附效果。研究表明,改性生物质炭对土壤中六价铬有明显的吸附效果,改性花生壳、改性荔枝壳、改性桔子皮对土壤中铬的吸附率分别达到75.20%、76.30%、76.20%。改性后的生物炭可以作为改良剂对土壤进行修复,较好地降低土壤中六价铬的浓度。Biochar material has been verified to have good pore structure and a variety of functional groups,and has a certain effect on the adsorption of heavy metals and other organic matter in soil,so it has been applied to water body and soil remediation.In this study,peanut shell,litchi peel and orange peel were used as raw materials,and 5%zinc chloride solution was used to modify the raw materials,biochar was prepared by pyrolysis,and the adsorption effect of different modified biochar on chromium contaminated soil was studied.The results showed that the modified biochar had obvious adsorption effect on the hexavalent chromium in soil,and the adsorption rates of the modified peanut shell,the modified litchi shell and the modified orange peel reached 75.20%,76.30%and 76.20%,respectively.The modified biochar could be used as a modifier to repair the soil and reduce the concentration of hexavalent chromium in the soil.

关 键 词：生物质炭 土壤修复 吸附 铬 

分 类 号：TS5[轻工技术与工程—皮革化学与工程]