摘要
用AlCl3和溴化十六烷基三甲基铵(CTMAB)共同改性制得无机-有机复合膨润土Al-CTMAB-Bent,并研究其同时吸附处理水中菲和PO43-的性能.结果表明,在菲和PO43-的初始浓度分别为1 mg/L和5 mg/L(以P计)、水土比为800∶1时,Al-CTMAB-Bent对菲和PO43-的去除率分别为96.3%和90.2%.Al-CTMAB-Bent沉降性能良好,沉降1 h后剩余浊度比相应的有机膨润土下降81.4%,为解决实际污水处理中有机膨润土固-液分离难题提供依据.
Inorganic-organic bentonites （Al-CTMAB-Bent） were synthesized by modifying bentonites with AlCl3 and eetyltrimethyl ammonium bromide （CTMAB）. Simultaneous sorption of aqueous phenanthrene and phosphate onto Al-CTMAB-Bent were examined. Removal rates of phenanthrene and phosphate from water are 96.3 % and 90.2 %, respectively, at their respective initial concentrations of 1mg/L and 5mg/L when the added amount of Al-CTMAB-Bent was 1.25 g/L. The residual turbidity of Al-CTMAB-Bent suspension decreased 81.4% comparing to that of organobentonite suspension after 1 hour settlement. Thus inorganic-organic bentonite can be used to treat wastewater containing both organic pollutants and phosphate.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2006年第1期91-94,共4页
Environmental Science
基金
国家自然科学基金项目(50378081)
国家高技术研究发展计划(863)项目(2002AA302305)
关键词
无机-有机复合膨润土
菲
磷酸盐
吸附
水处理
inorganic-organic bentonites
phenanthrene
phosphate
sorption
water treatment
