木屑和花生壳吸附去除水溶液中Cr^(3+)的试验研究

Study on removing Cr^(3+) from aqueous solution by sawdust and peanut husks

以废弃物木屑和花生壳作为吸附剂,进行了吸附去除水中Cr3+的试验。研究了溶液pH值、初始Cr3+浓度以及温度等因素对这2种吸附剂去除Cr3+作用的影响,对吸附曲线作了线性拟合,确定了相应的平衡吸附率,在Cr3+初始浓度为1、5、10和20 mg/L时,木屑对Cr3+的平衡吸附率为81%、68%、56%和40%,花生壳依次为77%、63%、53%和42%,并探讨了这2种吸附剂对溶液中Cr3+的吸附机理。

Study on the removal of Cr^3＋ from aqueous solution by sawdust and peanut husks. The effects of pH value, initial Cr^3＋ concentration and temperature on adsorption have been investigated, adsorption curves linear fit, ensured the correspondence equilibrium uptake for the two adsorbents. While the initial concentration of Cr^3＋ is 1,5,10,20 mg/L,the equilibrium uptake on sawdust is 81% ,68% ,56% and 40% ,on peanut husks is 77% .63% .53% and 42% respectively. The adsorption mechanism is also discussed.