【摘要】 从吸附动力学角度出发,研究了干渣、沸石、页岩陶粒和白云石四种基质对水体中磷素的吸附作用,结果表明,干渣对磷素的吸附量最大,其次是沸石和页岩陶粒,白云石对磷素的吸附量最小。作用48h后,干渣对磷素的吸附量分别是沸石、页岩陶粒和白云石的3.9倍、6.7倍和11倍。一级动力学方程、Elovich方程和双常数速率方程均能很好地描述人工湿地基质对磷素的等温吸附动力学特征,但从相关系数来看,Elovich方程的描述更为准确。四种基质对磷素的吸附速率依次为:干渣>页岩陶粒>沸石>白云石。更多还原

【Abstract】 Phosphorus adsorption kinetics of blast furnace slug,zeolite,shale and dolomite were studied through experiments on isotherms P-adsorption.Results showed that blast furnace slug has the highest P-adsorption capacity,followed by zeolite and shale,dolomite has the less effect.In terms of correlation coefficient,Elovich equation is the best model to describe P-absorption kinetics comparing with other equations.更多还原