【摘要】 研究了在土壤中加入活化硅胶后对土壤吸附镍的影响。考察了活化硅胶的加入量、溶液中镍离子的初始浓度、p H、离子强度、温度和震荡时间对土壤吸附镍的影响。结果表明,当活化硅胶与土壤的质量比为0.40∶1.25、土壤溶液的p H为7,土壤溶液中镍离子的初始浓度为4 mmol/L,θ为25℃,震荡2 h时,土壤对镍的吸附效果最佳。更多还原

【Abstract】 This work studied the effect of activated silica gel on adsorption of Ni2 +in soil. The influencing factors for Ni2 +adsorption properties in soil were studied including usage of activated silica gel,initial concentration of Ni2 +ions,p H value,ionic strength,reaction temperature and shock time. The results showed that the best adsorption conditions were that weight ratio of activated silica gel to the soil at0. 40 ∶ 1. 25,pH value at 7,initial concentration of Ni2 +at 4 mmol / L,temperature at 25 ℃ and shock time at 2 h.更多还原