褐煤及改性褐煤吸附处理含酚废水

Adsorption treatment of phenolic wastewater using lignite and modified lignite

含酚废水是一种典型的有毒工业废水,利用褐煤处理含酚废水可降低处理成本。利用KOH、浓H3PO4对褐煤进行改性来提高其吸附能力,并考察了吸附温度、苯酚溶液p H等对褐煤处理苯酚效果的影响。确定了苯酚的最佳吸附条件,并对褐煤吸附苯酚的机理进行了研究。

Phenol wastewater is a kind of typical and toxic industrial wastewater. The treatment of phenolic wasterwater using lignite can reduce the cost. In this paper, the modified lignite treated by KOH and H3PO4 can improve the adsorption capacity of lignite. The effects of adsorption temperature and pH of mimic phenolic solutions on phenol removal are investigated. The results show that the best adsorption conditions are determined. The sorption mechanism of lignite is discussed as well.