Graft copolymerization of cellulose acetate for removal and recovery of lead ions from wastewater

被引：42
|
作者：
Abdelwahab, Nourelhoda A. [1 ]
Ammar, Nabila S. [2 ]
Ibrahim, Hanan S. [2 ]
机构：
[1] Natl Res Ctr, Dept Polymers & Pigments, 33 El Bohouth St,PO 12622, Dokki Giza, Egypt
[2] Natl Res Ctr, Water Pollut Res Dept, Dokki Giza, Egypt
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2015年 / 79卷
关键词：
Cellulose acetate; Graft copolymerization; Lead recovery; Isotherm models; Kinetic models; LIQUID-PHASE ADSORPTION; HEAVY-METAL REMOVAL; REMEDIATION; ADSORBENT; MEMBRANE; SORPTION; MONTMORILLONITE; NANOPARTICLES; CHROMIUM(VI); BIOSORPTION;
D O I：
10.1016/j.ijbiomac.2015.05.022
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
In this study, cellulose acetate (CA) was modified by grafting with an equimolar binary mixture of acrylic acid (AA) and acrylamide (AAm) via radical polymerization technique using benzoyl peroxide as an initiator. Comparative studies between CA powder and modified CA [CA-g-(AA-co-AAm)] were investigated for Pb(II) ions removal and recovery from wastewater. The main operating conditions such as pH, concentration of Pb(II) ions and sorbent dose were also studied. Kinetic modeling has been studied and lead uptake capacity was calculated using the Langmuir, Freundlich and Dubinin-Kaganer-Radushkevich (DKR) models. The maximum sorption capacity (q(emax)) for Pb ions was only 9.4 mg/g for unmodified CA, while, it was reached to 66.67 mg/g by using modified CA. Spectroscopic analysis (FTIR), SEM, EDX and XRD analysis were investigated for CA and modified CA before and after recovery of lead ions from wastewater. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：913 / 922
页数：10
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