文献类型：期刊文献

中文题名：生物炭负载纳米铁镍双金属去除水中1,1,1-三氯乙烷

英文题名：Removal of 1,1,1-trichloroethane from water using biochar-supported nano Fe-Ni bimetal

作者：邱月峰[1];李辉[1];刘勇弟[1];林匡飞[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2016

卷号：36

期号：5

起止页码：500

中文期刊名：化工环保

外文期刊名：Environmental Protection of Chemical Industry

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：国家自然科学基金项目(41273109;51378208)

语种：中文

中文关键词：1,1,1-三氯乙烷;生物炭;纳米铁镍双金属;地下水修复

外文关键词：1, 1, 1-trichloroethane; biochar; nano Ni-Fe bimetal; groundwater remediation

摘要：以小麦秸秆为原料制备生物炭,再通过液相还原法制备了生物炭负载纳米铁镍双金属材料(Ni/Fe/BC),运用FTIR,SEM,XRD技术进行了表征,并将该材料用于水中1,1,1-三氯乙烷(TCA)的去除。表征结果显示,生物炭具有良好的空隙结构和较大的比表面积,能有效负载纳米铁镍双金属,防止纳米铁镍双金属颗粒的团聚。实验结果表明:Ni/Fe/BC的最佳制备条件为生物炭、Fe、Ni的质量比1∶1∶0.01;在TCA质量浓度200 mg/L、Fe加入量1 g/L的条件下,反应60 min时,Ni/Fe/BC对TCA的去除率达99.2%,与未经生物炭负载时的39.1%相比显著提高;生物炭通过吸附TCA使TCA与双金属的接触增多,而铁腐蚀产生的氢被吸附在镍金属表面形成活性氢自由基,促进了TCA的去除。
Biochar was prepared using wheat straw as material, and then biochar supported nano Ni-Fe bimetal （Ni/ Fe/BC） for removal of 1, 1, 1-trichloroethane （TCA） in water were prepared by liquid-phase reduction method and characterized by FTIR, SEM and XRD. The characterization results indicate that the biochar has good porous structure and large specific surface area, and it can support and disperse the Ni-Fe bimetal nanoparticles effectively. The experimental results show that： The optimum mass ratio of biochar to Fe to Ni for Ni/Fe/BC preparation is 1 ： 1：0.01 ; Under the conditions of TCA mass concentration 200 mg/L, Fe dosage 1 g/L and reaction time 60 min, the removal rate of TCA is reached 99.2%, which is much higher than 39.1% without biochar supported; The contact of Ni-Fe bimetal with TCA is increased by adsorption of TCA on biochar, and hydrogen atoms generated by Fe corrosion can be absorbed on the surface of Ni metal and then produce active hydrogen free radicals, which can improve the removal of TCA.