Superabsorbent hydrogrel based on modified polysaccharide for removal of Pb2+ and Cu2+ from water with excellent performance

被引:88
作者
Guilherme, Marcos R. [1 ]
Reis, Adriano V.
Paulino, Alexandre T.
Fajardo, Andre R.
Muniz, Edvani C.
Tambourgi, Elias B.
机构
[1] Univ Estadual Campinas, Fac Engn Quim, Dept Proc Quim & Informat, Campinas, SP, Brazil
[2] Univ Estadual Maringa, Dept Quim, Grp Mat Polimericos & Compositos, Maringa, Parana, Brazil
关键词
hydrogels; metal-polymer complexes; polysaccharides; swelling; water-soluble polymers;
D O I
10.1002/app.26287
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
This contribution describes the absorption percentage of Pb2+ and Cu2+ from water by a superabsorbent hydrogel matrix (SH) made from an anionic polysaccharide copolymerized with acrylic acid (AAc) and acrylamide (AAm). Metal-absorption tests, upon sequential pH variation, indicated that the SH has pH-sensitivity for the absorption of both metals from solution, attributed to the functional ionic groups (-COOH) present in the AAc and arabic gum (AG) segments. At the pH 5.0, the SH exhibited good absorption capacity: 73.10% for Pb-2+,Pb- 81.99% for Cu2+ in water and 63.64% for Pb2+, and 76.67% for Cu2+ in saline water with 0.1 mol kg(-1) ionic strength. A replicated 2 2 full factorial design with a central point was built to evaluate the maximum absorption capacity of the metals into the SH. It was found that both the interaction and main effects of the pH and the initial concentration of metal solution on absorption percentage of the metals were statistically significant. Surface response plots indicated that the absorption capacity of both metals into the SH may be appreciably improved by using the solutions with lower initial concentration of metal and with higher pH values. Metal-absorption results demonstrated that the SH is a convenient material for absorption of Pb2+ and Cu2+ from pure aqueous and saline aqueous environments. (C) 2007 Wiley Periodicals, Inc.
引用
收藏
页码:2903 / 2909
页数:7
相关论文
共 23 条
[1]  
Bell CL, 1995, ADV POLYM SCI, V122, P125
[2]  
Buchholz F.L., 1998, POLYM INT
[3]   On the adsorption and diffusion of Methylene Blue in glass fibers [J].
Chakrabarti, S ;
Dutta, BK .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 286 (02) :807-811
[4]   STRUCTURAL STUDIES OF GUM-ARABIC, THE EXUDATE POLYSACCHARIDE FROM ACACIA-SENEGAL [J].
DEFAYE, J ;
WONG, E .
CARBOHYDRATE RESEARCH, 1986, 150 (01) :221-231
[5]   Synthesis of a novel superabsorbent hydrogel by copolymerization of acrylamide and cashew gum modified with glycidyl methacrylate [J].
Guilherme, MR ;
Reis, AV ;
Takahashi, SH ;
Rubira, AF ;
Feitosa, JPA ;
Muniz, EC .
CARBOHYDRATE POLYMERS, 2005, 61 (04) :464-471
[6]   Equilibrium uptake and sorption dynamics for the removal of a basic dye (basic red) using low-cost adsorbents [J].
Gupta, VK ;
Ali, I ;
Suhas ;
Mohan, D .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2003, 265 (02) :257-264
[7]   Removal of lead and chromium from wastewater using bagasse fly ash - a sugar industry waste [J].
Gupta, VK ;
Ali, I .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 271 (02) :321-328
[8]   Removal of cadmium and nickel from wastewater using bagasse fly ash - a sugar industry waste [J].
Gupta, VK ;
Jain, CK ;
Ali, I ;
Sharma, M ;
Saini, VK .
WATER RESEARCH, 2003, 37 (16) :4038-4044
[9]   Removal of zinc from aqueous solutions using bagasse fly ash a low cost adsorbent [J].
Gupta, VK ;
Sharma, S .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2003, 42 (25) :6619-6624
[10]   Adsorption behavior of Hg(II), Pb(II), and Cd(II) from aqueous solution on Duolite C-433: a synthetic resin [J].
Gupta, VK ;
Singh, P ;
Rahman, N .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 275 (02) :398-402