中国粉体技术2017，Vol.23Issue(1)：1-6,6.DOI:10.13732/j.issn.1008-5548.2017.01.001
纳米零价铁液相还原制备及其对水中Pb2+的去除作用
Nano zero-valent iron preparation by using method of liquid phase reduction and its removal to Pb2+
摘要
Abstract
In order to clarify the removal effect and mechanism of Pb2+ from water,the nano zero-valent iron (NZVI) was prepared by the method of liquid phase reduction.NZVI was prepared by liquid phase reduction with addition of organic polymer material.The characteristics of NZVI was investigated using scanning electron microscope (SEM) and X-ray diffraction (XRD).The experiment was conducted to investigate the influence of initial ion concentration and solution initial pH value on removal of Pb2+ with time changing,and clarify the removal effect and mechanisms of Pb2+ from water using NZVI.The results show that the reaction equilibrium achieves within 120 min and the removal rate of Pb2+ is more than 99％ when the Pb2+ initial concentration is 50 and 100 mg/L and the addition of NZVI is 1 g/L.The removal ratio of Pb2+ increased from 41.47％ to 73.58％ while solution initial pH value increase from 2 to 3,and from 73.58％ to 92.62％ initial pH value from 3 to 4.The results also indicate that the removal of Pb2+ by NZVI is suitable for pseudo second-order model and it is mainly conducted by the redox reaction and co-precipitation.关键词
纳米零价铁/Pb2+/氧化还原反应/反应动力学Key words
nano zero-valent iron/Pb2+/redox reaction/reaction dynamics分类
资源环境引用本文复制引用
陈仰,朱健,王平,杨岚鹏,杨雨中,谭蓉..纳米零价铁液相还原制备及其对水中Pb2+的去除作用[J].中国粉体技术,2017,23(1):1-6,6.基金项目
湖南省高校创新平台开放基金项目,编号:13K070,15K147 （）
湖南省重点研发计划项目,编号:2015SK20043,2016SK2030 （）
湖南省环境保护科技计划项目编号,湘财建指[2014]287号 （）
湖南省优秀博士学位论文获得者科研项目,编号:YB2015B031 （）
中南林业科技大学引进高层次人才科研启动基金项目,编号:0369 （）
湖南省环境科学重点学科建设基项目金,编号:2310006. （）
