煤基活性炭吸附废水中Pb^(2+)的实验研究

Adsorption Study of Coal Based Activated Carbon for Pb^(2+) from the Wastewater

以煤基活性炭为吸附剂,对模拟废水中Pb2+的脱除进行了研究。考察了脱除时间、温度、p H值以及吸附剂用量对模拟废水中Pb2+脱除率的影响。结果表明:Pb2+质量浓度为100mg/L,p H值为6.0~7.0,浸泡时间7h,浸泡温度60℃,每克活性炭处理138mg Pb2+的废液,Pb2+去除率可达99.8%。

With coal based activated carbon as adsorbent,removal ratios of Pb^2 ＋ from the simulated wastewater were studied emphatically. The effects of the time of removal temperature,pH,the amount of adsorbent upon the removal ratios of Pb2 ＋from wastewater have been investigated. The optimal conditions are as followed：the concentration of Pb^2 ＋ 100mg/ L,pH 6. 0 ~ 7. 0,soaking time 7h,soaking temperature 60℃,138mg Pb^2 ＋ can be removal with 1g activated carbon from the lead containing wastewater,the removal ratios of Pb^2 ＋ was up to 99. 8% .