生态与农村环境学报2017，Vol.33Issue(7)：660-664,5.DOI:10.11934/j.issn.1673-4831.2017.07.011
生物炭负载纳米零价铁材料的制备及还原降解性能
Preparation and Reductive Degradation Properties of Biochar Loaded With Nano Zero-Valent Iron.
摘要
Abstract
Three kinds of biochars (BCs) were prepared from peanut shell, rice straw and corn stalk, and further into three kinds of composites of the corresponding biochar-loaded with nano zero-valent iron (BC/nZVI), separately, of which physic-chemical properties and structures were characterized with BET and SEM, respectively.Moreover, effects of the BC/nZVI reductively degrading γ-benzene hexachloride (BHC), a typical organochlorine pesticide (OCP) in aqueous solutions were determined.Results show that peanut shell, rice straw and corn stalk pyrolyzed at 300 °C turned out the highest amounts of BCs, which were high in adsorption capacity.The prepared BC/nZVI appeared to be in spherical particle, and the one prepared out of peanut shell was the highest in dispersivity.In aqueous phase experiments, BC/nZVI was much higher than BC or nZVI in effect of removing γ-BHC.Among three kinds of composites, the peanut shell based BC/nZVI was the highest in γ-BHC removal rate, reaching up to 87.53% in aqueous solutions for six hours and had the total pollutant degradation rate reach up to 82.33% in the reaction system.关键词
生物炭/纳米零价铁/γ-六六六/吸附/降解Key words
biochar/nano zero-valent iron/γ-BHC/adsorption/degradation分类
资源环境引用本文复制引用
林琳,万金忠,李群,周艳,吴娟,李川,张胜田,朱丽珺..生物炭负载纳米零价铁材料的制备及还原降解性能[J].生态与农村环境学报,2017,33(7):660-664,5.基金项目
国家自然科学基金(41571316,41201311) （41571316,41201311）
江苏省环保科研课题(2013026) （2013026）
