用加碳焙烧法对膨润土改性的研究  

RESEARCH ON MODIFIED BENTONITE BY CARBON-ENTRAINING ROASTING METHOD

作　　者：陈集[1] 饶小桐[1] 许源[1] 丰敏[1] 

机构地区：[1]西南石油学院化学化工学院,四川南充637001

出　　处：《西南石油学院学报》2002年第4期65-67,共3页Journal of Southwest Petroleum Institute

基　　金：西南石油学院科研项目 (院 197)

摘　　要：提出了对膨润土进行加碳焙烧改性的方法 ,并通过对水溶液中苯酚的去除率的测定来评价改性的效果。通过实验 ,确定了最佳改性条件为 :加碳量 3% ,焙烧温度 6 0 0℃ ,焙烧时间 2h。实验结果表明 ,与直接焙烧法相比 ,加碳焙烧法所制得的膨润土吸附剂有更强的吸附能力 ,苯酚去除率提高约 16 % ,水处理后吸附剂易于沉降分离 ,回收的吸附剂在 6 0 0℃下活化后可反复多次使用 ,因此可作为一种成本较低 ,无二次污染的有机废水处理剂。同时 ,由于其结构稳定 ,比表面较大 。A new method on bentonite modification by carbon entraining roasting has been presented. The optimum conditions for bentonite modification were determined by the experiments. The effect of improvement was evaluated by de phenol efficiency in aqueous solution. Comparing with directing roasting method, the bentonite absorber made by carbon entraining method has stronger adsorptive capacity, its de phenol efficiency raises about 16%. The absorber is easy to separate by sagging after treating waste water, and the recovered absorber is reusable by activation at 600℃. The modified bentonite by carbon entraining roasting method is a good organic wastewater treatment agent that is cheaper and does not cause secondary pollution. Besides, it can be used as a catalyst carrier because the modified betonite has a stable structure and large amounts of specific surface.

关 键 词：加碳焙烧法 膨润土 改性 研究 吸附剂 废水处理 

分 类 号：TQ424.2[化学工程] X703.3[环境科学与工程—环境工程]