Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 490, Issue -, Pages 505-510Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2016.11.096
Keywords
Nanocomposites; Graphene oxide; Polyacrylamide; Flocculation and retention
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Funding
- Islamic Azad University, South Tehran Branch
- National Research Foundation (NRF) south africa
- University of Johannesburg, Johannesburg
- Deanship of Scientific Research at King Saud University for the Prolific Research Group [PRG-1437-31]
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Polyacrylamide/graphene (PAM/GO) based nanocomposites were synthesized and applied as flocculating agent for cleansing the solvent phase. In order to obtain the better dispersion of the graphene nanoplatelets in matrix the functionalization was carried out using acid and upon analytical characterization the successful fine dispersion of FGNp was found in the PAM matrix. The influence of GO concentrations on viscosity, charge demand, flocculating and dewatering with ambient micrometer-sized ground calcium carbonate (GCC) was well evaluated and elucidated. It was found that on increasing the GO content in the PAM/GO nanocomposites, the filtered weight of GCC suspensions also increases, and the filtrate turbidity decreased and it was also observed that on adding the GO both eta and supernatant turbidity reduced: by growing GO concentrations, there was a fall in eta and turbidity of cleaned water. The retention mechanism proceeds through a parallel method to microparticle retention system which is done via bridge/patch among pulp and filler. (C) 2016 Elsevier Inc. All rights reserved.
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