Removal of Pb (II) from aqueous solution by adsorption using activated carbon developed from Apricot stone: equilibrium and kinetic

被引：10
作者：
Mouni, Lotfi [1 ]
Belkhiri, Lazhar [2 ]
Zouggaghe, Fatah [1 ]
Tafer, Mourad [1 ]
机构：
[1] Univ Akli Mohand Oulhadj Bouira, Fac Sci Nat & Vie & Sci Terre, Lab Gest & Valorisat Ressources Nat & Assurances, Bouira 10000, Algeria
[2] Univ Batna, Dept Hydraul, Lab Genie Environm, Batna 05000, Algeria
来源：
DESALINATION AND WATER TREATMENT | 2014年 / 52卷 / 34-36期
关键词：
Isotherm; Adsorption; Lead removal; Activated carbon; Apricot stone; HEAVY-METALS; SORPTION; LEAD; IONS; WASTE; MODEL; PEAT;
D O I：
10.1080/19443994.2013.812992
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Activated carbons were developed from Apricot stone, by chemically treating with sulfuric acid. Batch adsorption experiments were performed to find out the effective lead removal at different metal ion concentrations, adsorbent size, and dosage. Adsorption of Pb2+ ion was strongly affected by pH. Apricot stone exhibited the highest lead adsorption capacity at pH 6.0. Isotherms for the adsorption of lead on Apricot stone were evaluated with the Langmuir, Freundlich adsorption isotherm models. The equilibrium data fitted well to the Langmuir and Freundlich isotherm models. Adsorption kinetics data were modeled using the pseudo-first and pseudo-second-order models. The results indicate that the second-order model best describes adsorption kinetic data. The estimated maximum capacities of lead ions adsorbed by Apricot stone activated with sulfuric acid were 21.38 mg g(-1). This high uptake showed Apricot stone activated carbon as among the best adsorbents for Pb(II).
引用
收藏
页码：6412 / 6419
页数：8
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