【摘要】 在微波作用下以盐酸萘乙二胺(NETH)、溴代十六烷基吡啶(CPB)和十六烷基三甲基溴化铵(CTMAB)为改性剂,制备了系列有机膨润土.通过X-射线衍射(XRD)、傅里叶红外光谱分析(FTIR)和有机物含量分析对各种膨润土进行表征,同时考察了三种改性土对结晶紫的吸附效果.结果显示,以NETH改性的膨润土吸附效果最好,在pH=6.0的近中性溶液中,0.2g的NETH/Bt在60min内对初始浓度为48.96mg/L的结晶紫吸附率达98.0%,并且其吸附等温线符合Freundlich方程.更多还原

【Abstract】 A series of organobentonites were modified by microwave irradiation with N-(1-naphtthy) ethylenediamine dihydrochloride(NETH),cetyl pyridinium bromide(CPB) and cetyltrimethylammonium(CTMAB) as the intercalary reagents,respectively,and these organobentonites were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR) and Organic content.The test results indicated that three kinds of modified bentonite could effectively adsorb crystal violet in water.The bentonite modified by NETH has the best adsorption to crystal violet,and its optimum adsorption conditions(pH value,adsorption time and amount of adsorbent) were studied.The results show that the rate of adsorption in crystal violet solution of initial concentration of 48.96 mg/L on 0.2 g NETH/Bt reaches 98.0% in 60 min,and the adsorption isotherm was fit well by the Freundlich equation.更多还原