Comparative and competitive adsorption of copper, lead, and nickel using chitosan immobilized on bentonite

被引：338
作者：
Futalan, Cybelle Morales [2 ]
Kan, Chi-Chuan [1 ]
Dalida, Maria Lourdes [3 ]
Hsien, Kuo-Jung [1 ]
Pascua, Chelo [4 ]
Wan, Meng-Wei [1 ]
机构：
[1] Chia Nan Univ Pharm & Sci, Dept Environm Engn & Sci, Tainan 71710, Taiwan
[2] Univ Philippines Diliman, Dept Environm Engn, Quezon City 1800, Philippines
[3] Univ Philippines Diliman, Dept Chem Engn, Quezon City 1800, Philippines
[4] Univ Philippines Diliman, Natl Inst Geol Sci, Quezon City 1800, Philippines
来源：
CARBOHYDRATE POLYMERS | 2011年 / 83卷 / 02期
关键词：
Antagonistic; Adsorption; Chitosan; Bentonite; Comparative and competitive; AQUEOUS-SOLUTION; IONS; REMOVAL; MONTMORILLONITE; MECHANISMS; ISOTHERM; CADMIUM; PB(II); DYE; PH;
D O I：
10.1016/j.carbpol.2010.08.013
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The comparative and competitive adsorption of Cu(II) Ni(II) and Pb(II) from aqueous solution using chitosan immobilized on bentonite (CHB) was investigated The adsorption data of single and binary systems indicated that Cu(II) and Pb(II) best fits Freundlich isotherm while NI(II) follows Langmuir In binary systems a decrease in adsorption capacities and isotherm constants was observed showing preference of adsorption in the order of Pb(II) > Cu(II) > Ni(II) Kinetic studies of single system indicated that the pseudo-second order is the best fit with high correlation coefficients (R-2 > 099) and low sum of error values (SE = 0 13-0 46%) Thermodynamic studies illustrated that adsorption of CHB are exothermic and causes a decrease in the entropy The adsorption of Pb(II) is spontaneous while Ni(11) is non-spontaneous at 25-55 C Cu(II) adsorption is only spontaneous at 25 C (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码：528 / 536
页数：9
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