Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 4, Issue 2, Pages 1731-1742Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2016.02.034
Keywords
Graft copolymer; Guar gum; Zeta potential; Polyanion; Pb(II); Chi-square (chi(2)) test
Categories
Funding
- TEQIP (Technical Education Quality Improvement Programme), University of Calcutta [TEQIP-II/ ACA/12/PST/001]
Ask authors/readers for more resources
This article describes the influence of zeta potential and hydrodynamic size of a polyanion, poly (acrylic acid) grafted guar gum (GG-g-PAA) for adsorption of Pb(II). The copolymers were synthesized through surfactant mediated free radical polymerization technique. Aqueous dispersion of the copolymers were directly added to the contaminated water and the parameters such as copolymer grade, pH, adsorbent-adsorbate concentrations, adsorption time and temperature were varied to maximize the adsorption efficiency. The copolymer synthesized with 1: 10, GG: AA mole composition and 0.5 wt% initiator content produced maximum adsorption (89.62%) at a pH of 4.5, which was further raised to 95.32% on manipulation. Regression analysis showed the polyanion chemically interacted with Pb(II) and formed a monolayer (Langmuir adsorption) while Chi-square (chi(2)) test indicated possibility of multilayer formation (both Langmuir and Freundlich isotherm models as well). The process followed pseudo second order kinetics alike all adsorption processes. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available