活性炭
吸附
弗伦德利希方程
化学
水溶液
核化学
朗缪尔
朗缪尔吸附模型
废水
碳纤维
有机化学
废物管理
材料科学
复合材料
工程类
复合数
作者
Chandan Singh,J.N. Sahu,K. Mahalik,Chitta Ranjan Mohanty,Raj Mohan Balakrishnan,B.C. Meikap
标识
DOI:10.1016/j.jhazmat.2007.08.043
摘要
The low-cost activated carbon were prepared from Tamarind wood material by chemical activation with sulphuric acid for the adsorption of Pb(II) from dilute aqueous solution. The activated carbon developed shows substantial capacity to adsorb Pb(II) from dilute aqueous solutions. The parameters studied include physical and chemical properties of adsorbent, pH, adsorbent dose, contact time and initial concentrations. The kinetic data were best fitted to the Lagergren pseudo-first-order and pseudo-second order models. The isotherm equilibrium data were well fitted by the Langmuir and Freundlich models. The maximum removal of lead(II) was obtained 97.95% (experimental) and 134.22 mg/g (from Langmuir isotherm model) at initial concentration 40 mg/l, adsorbent dose 3 g/l and pH 6.5. This high uptake showed Tamarind wood activated carbon as among the best adsorbents for Pb(II).
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