摘要
通过采用HCl、Na2CO3、十六烷基三甲基溴化铵(CTMAB)、十六烷基三甲基氯化铵(1631)等试剂对天然累托石进行改性研究,并将改性后的累托石用于吸附废液中过量Pb2+。实验结果表明单独采用无机改性的效果明显好于单独使用有机改性的效果。考虑到采用无机改性后的累托石在溶液中的沉降性很差,不利于沉淀分离,故而采取无机-有机相结合的方法改性累托石。此法对Pb2+的去除率基本达到100%,吸附容量可达到8.31mg/g,并且吸附后的混合液很容易实现两相分离,有利于提高吸附效果。
Through contrastivc experiment of excessive Pb2+ in wastewater. the adsorption of natural rectorite modified by HCl. Na2 CO3. cetyltrimethyl ammonium bromide (CTMAB) and cetyltrimethyl ammonium chloride (1631) was investigated. Results showed inorganic-modified effect is better than organic-modified effect. Inorganic-organic methods were adopted in view of the poor subsidence of rectorite modified by inorganic method, with removal efficiency almost up to 100% and adsorbing capacity up to 8. 31mg/g. The solution has better subsidence property, and is efficient in improving adsorption effect.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2005年第4期16-17,22,共3页
Environmental Science & Technology
基金
湖北省自然科学基金资助项目(2001ABB100)
湖北省废物地质处置与环境保护重点实验室开放研究基金资助项目(HBWDEP200003)
关键词
累托石
改性
吸附
铅离子
rectorite
modification
adsorption
lead ion
