摘要
以黄药水溶液为模拟对象,分别考察了粘土用量、吸附时间以及黄药初始浓度等参数对柱撑蒙脱石吸附黄药的影响.结果表明,改性后蒙脱石的结构变化对改善其吸附能力起到了关键作用.有机柱撑剂不仅改变了复合柱撑粘土中蒙脱石原有的亲水特性,同时改善了层间距中无机柱撑剂的物化特性,使得复合柱撑蒙脱石具有吸附速度快和吸附容量大的特点,并且提高了其催化性能.
Three sorts of modified clays, organoclay, inorganoclay and inorgano/organo clay, were synthesized by the reaction of Na-montmorillonite with Ti-crosslinking agent and oetyltrimethylammonium bromide (CTAB). Amount of clay, adsorption time and the concentration of xanthate were treated as the most important parameters to investigate their adsorption abilities to xanthate in this work. The primary results indicated that inorgano/organoclay had the highest interlayer among them, which contribute the best adsorption capacity to xanthate. Moreover, it proved that inorgano/organoclay could be regenerated and used as photocatalyst to degrade xanthate by ultraviolet irradiation at 254nm. It is expected that this new material could be developed as potential eco - environmental materials for absorbing and photolyzing organic pollutants from wastewater.
出处
《环境化学》
CAS
CSCD
北大核心
2005年第4期394-396,共3页
Environmental Chemistry
基金
国家自然科学基金资助项目(No.50474045.No.50244021).
