【摘要】 研究了膨润土原土及2种经不同表面活性剂改性的膨润土在不同的pH值、不同的用量等条件下对Cr(VI)的吸附情况,以及3种土达到吸附平衡所需的时间.还研究了3种土对Cr(VI)的等温吸附.结果表明,1827改性的膨润土吸附效果好,平均去除率为93%,且几乎不受pH值和时间的影响.其中2种改性膨润土对Cr(VI)的吸附为Freundlich吸附.更多还原

【Abstract】 Two kinds of modified bentonite were prepared with different surfactant. Experiments were made on removal Cr(VI) from aqueous solution with the original bentonite and modified bentonite .The optimum Cr(VI)-absorbing conditions and adsorption isotherms of these three samples were investigated in detail. The result show that 1827-bentonite have high removal rate without the effect of pH and time. The adsorption isotherms of two modified bentonite are of Freundlich-type.更多还原