作　　者： ; ; (魏东林）;

机构地区： 桂林电子工业学院机电工程学院机械电子工程系

出　　处： 《离子交换与吸附》 2003年第4期351-356,共6页

摘　　要： 研究了板蓝根药渣对配制的低浓度含铅废水的吸附特性。结果表明,板蓝根药渣能快速、大量地吸附铅。Langmuir型吸附模型能较好地描述板蓝根药渣对铅的吸附实验数据,吸附模型为ce/q=1.9209+0.007319ce,其线性回归系数高达0.9998;溶液pH和温度是影响吸附的重要因素,pH 6.0~7.0、25℃左右是吸附的适宜条件。对板蓝根药渣用0.1mol/L^0.2mol/L的NaOH溶液进行预处理,能有效提高板蓝根药渣吸附铅的能力。0.05mol/L的HNO3能有效地洗脱板蓝根药渣上吸附的铅。 The features of biosorption of lead by Isatis indigotica Fort draff were studied. It was found that Isatis indigotica Fort draff could adsorb lead very quickly. The adsorption of lead on Isatis indigotica Fort draff was of Langmuir adsorption type with regression coefficient of 0.9998. The pH value and temperature were the important effect factors on adsorption of lead. Pretreatment of Isatis indigotica Fort draff by NaOH solution (0.1mol/L^0.2mol/L) improved its adsorption capacity. Lead can be desorbed effectively from Isatis indigotica Fort draff by HNO3 solution (0.05mol/L).

关 键 词： 板蓝根药渣 低浓度含铅废水 吸附特性 废水处理 吸附剂

领　　域： [环境科学与工程] [环境科学与工程]