去除水体中F-和SO2-4的吸附材料

选择火山渣、 骨炭、 粉煤灰和锰砂为吸附材料, 考察其去除水体中F^-和SO^2-₄的性能, 并将火山渣和骨炭进行改性, 研究其改性后的动力学规律. 结果表明： 火山渣和骨炭对F-的吸附量分别为0.092,0.041 mg/g, 对SO^2-₄的吸附量分别为5.72,3.99 mg/g； 粉煤灰和锰砂对F^-的吸附量均低于0.020 mg/g, 均未吸附SO^2-₄;Al₂(SO₄)₃可作为改性剂; 经质量分数为10%的Al₂(SO₄)₃联合热改性后火山渣对F^-的最大吸附量为0.099 mg/g； 经质量分数为10%的Al₂(SO₄)₃化学改性后火山渣对SO^2-₄的最大吸附量为5.93 mg/g； 二者动力学吸附规律均符合准二级方程.

Materials of Adsorbing Fluoride and Sulfate in Water

Four kinds of adsorption materials scoria, bone char, ash and manganese sand were used to remove F^- and SO^2-₄ in water. The research results show that adsorption capacities of scoria and bone char for F^- were 0.092，0.041 mg/g; adsorption capacities of them for SO^2-₄were 5.72,3.99 mg/g. Adsorption capacities of ash and manganese sand for F^- were both below 0.020 mg/g. AndSO^2-₄ was almost not adsorbed by them. Modification was applied in scoria and bone char because of their good adsorption effects. The research results show that Al₂(SO₄)₃ could be used as modifier. Adsorption capacity of scoria which was soaked in 10% Al₂(SO₄)₃ then calcinated at 300 ℃ was the maximum 0.099 mg/g. Adsorption capacity of scoria which was soaked in 10% Al₂(SO₄)₃ was the maximum 5.93 mg/g. Adsorption kinetics of them both followed quasi-secondary dynamics equation.