NDLI: Modified guar gum/SiO<sub>2</sub>: development and application of a novel hybrid nanocomposite as a flocculant for the treatment of wastewater

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Modified guar gum/SiO₂: development and application of a novel hybrid nanocomposite as a flocculant for the treatment of wastewater

Content Provider	Royal Society of Chemistry (RSC)
Author	Das, Raghunath Pal, Sagar Sarkar, Amit Kumar Sarkar, Supriyo Patra, Abhay Shankar Ghorai, Soumitra
Copyright Year	2015
Abstract	Using the sol gel process, a novel hybrid nanocomposite (g-GG/SiO2) has been developed in the authors' laboratory by grafting synthetic polyacrylamide chains on a guar gum backbone (g-GG) in the presence of microwave irradiation followed by in situ nanosilica incorporation on the surface of g-GG. Various characterization methods propose that g-GG promotes silica polymerization and probably acts as a template for nanoscale silica formation. Rheological characteristics indicate the gelling properties of the hybrid material. The application of the composite material in flocculation has been investigated on the laboratory scale as well as on the pilot scale. The flocculation kinetics and mechanism have been explained on the basis of pH of the suspension and flocculant dosage. Because of strong matrix–nanofiller interactions as well as enhanced molecular weight and hydrodynamic radius, the modified biopolymer-based nanocomposite provides excellent potential as a flocculant for the treatment of various synthetic and industrial effluents through a green disposal technique.
Starting Page	84
Ending Page	95
Page Count	12
File Format	HTM / HTML PDF
ISSN	20531400
Volume Number	1
Issue Number	1
Journal	Environmental Science: Water Research & Technology
DOI	10.1039/c4ew00023d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Sol\u2013gel process Nanocomposite Grafting Polyacrylamide Guar gum Microwave Silicon dioxide Polymerization Silica Formation Composite material Flocculation PH Hydrodynamic radius
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology

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