Al-CTMAB复合膨润土同时吸附处理水中菲和磷酸根

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PO₄^3-的性能.结果表明,在菲和PO₄^3-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PO₄^3-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.

Simultaneous Sorption of Aqueous Phenanthrene and Phosphate onto Bentonites Modified with AlCl_3 and CTMAB

Inorganic-organic bentonites(Al-CTMAB-Bent) were synthesized by modifying bentonites with AlCl₃ and cetyltrimethyl 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.