Biopolymer-Mediated Coating Influence on Wastewater Treatment Efficacy of Silver Nanoparticles Synthesized from Fungal C
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Biopolymer-Mediated Coating Influence on Wastewater Treatment Efficacy of Silver Nanoparticles Synthesized from Fungal Consortium S. Karthick Raja Namasivayam1,2 • S. Nivash Kumar3 • T. Mohammed Kamil2,3 T. Ravi3
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Received: 30 July 2017 / Revised: 11 January 2020 / Accepted: 18 January 2020 The National Academy of Sciences, India 2020
Abstract In the present study, wastewater treatment efficacy of silver nanoparticles synthesized from biomass of fungal consortium coated with chitosan was carried out. Nanoparticles were synthesized from dried biomass of fungal consortium stabilized with biocompatible polymer chitosan being characterized by various analytical techniques reveals high stable monodispersive spherical nanoparticles with the size range of 80–90 nm. Batch wastewater treatment studies under in vitro condition show polymer-stabilized nanoparticles brought about maximum reduction in various physicochemical parameters, and the reduction rate was high in increased incubation time. Chitosan-coated nanoparticles also reveal maximum inhibition of biofilm formation and viable count of pathogenic bacterial count. The present study would suggest the possible utilization of chitosan-stabilized silver nanoparticles in wastewater eco-friendly treatment process for the effective removal of various toxic contaminants.
Graphic Abstract Synthesized silver nanoparticles by the fungal consortium.
Keywords Consortium Silver nanoparticles Polymer Chitosan Wastewater Treatment
Introduction & S. Karthick Raja Namasivayam [email protected] 1
Centre for Bioresource and Development (C-BIRD), Department of Biotechnology, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu 600 119, India
2
Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai 600 119, India
3
Department of Chemical Engineering, Sathyabama University, Chennai 600 119, India
Water pollution is one of the largest environment problems in several countries. It mainly arises from wastewater released from household, industrial and agricultural processes. These effluents typically contain high concentrations of organic and inorganic chemicals such as hydrocarbon solvents, heavy metals, pesticides, dyes and so on. The toxicity, persistency and concentration of the contaminants result in serious environmental, public health
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and economic impacts [1, 2]. Consequently, treatment of wastewater before release into the environment is required. Wastewater treatment is the process of converting wastewater water that is no longer needed or is no longer suitable for use into eligible water that can be discharged back into the environment. There are several wastewater treatment techniques including physical, chemical or biological processes, i.e., coagulation, flocculation, adsorption, reverse osmosis, activated sludge and so on. However, there are some disadvantages, especially high operation and maintenance costs lead to searching eco-friendly and ec
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