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采用1次平衡法研究了不同pH值条件下重金属Pb2+的吸附解吸特性。研究结果表明,吸附量随平衡浓度的增加而增大,随pH值的升高而增大。初始浓度为100mgL-1和pH值为7分别为初始浓度和pH值的变化敏感阈值。解吸量随吸附量的增加而增大,解吸量随吸附量变化而变化的幅度随pH值的增大而减小。解吸量随pH值的增大而减小。解析率大小顺序为:pH=3>pH=5>pH=7>pH=9>pH=11。
The primary equilibrium method was used to study the adsorption and desorption characteristics of heavy metal Pb2 + under different pH conditions. The results show that the adsorption capacity increases with the increase of equilibrium concentration, and increases with the increase of pH value. The initial concentration of 100mgL-1 and pH value of 7, respectively, for the initial concentration and pH sensitivity threshold. The amount of desorption increased with the increase of adsorption amount, and the amount of desorption amount changed with the adsorption amount decreased with the increase of pH value. Desorption decreases with increasing pH. The order of resolution is: pH = 3> pH = 5> pH = 7> pH = 9> pH = 11.