Journal ArticleDOI
Rapid immobilization of viable Bacillus pseudomycoides in polyvinyl alcohol/glutaraldehyde hydrogel for biological treatment of municipal wastewater
Tithi Mehrotra,Mohammad Nawaid Zaman,Bhim Bali Prasad,Anuradha Shukla,Srijan Aggarwal,Rachana Singh +5 more
TLDR
The results from this bench-scale work show that employing bacteria-embedded PVA/GA hydrogel for the treatment of municipal wastewater yield promising results which should be further explored in pilot/field-scale studies.Abstract:
A new approach for easy synthesis of Bacillus pseudomycoides immobilized polyvinyl alcohol (PVA)/glutaraldehyde (GA) hydrogel for application in a wastewater treatment system is reported. Optimization studies revealed that GA/PVA mass ratio of 0.03 and acidic pH of 2 were required for hydrogel synthesis and eventually for bacterial cell immobilization. The synthesized crosslinked matrix possessed a pore size suitable for microbial cell entrapment while maintaining cell accessibility to external environment for bioremediation. Possible crosslinking and bacterial cell immobilization in the hydrogel were evidenced by FTIR, XRD, and SEM studies, respectively. Further, the extent of crosslinking of GA with PVA was investigated and confirmed by transmittance and permeability experiments. The viability and proliferation of hydrogel embedded cells (after 25 days) was confirmed by confocal fluorescence microscopy which also indicated that acidic pH of polymer solution did not affect the immobilized live cells. B. pseudomycoides immobilized hydrogel were demonstrated to be effective for treatment of municipal wastewater and reduced biochemical oxygen demand (BOD), chemical oxygen demand (COD), and protein content below the recommended levels. Overall, the results from this bench-scale work show that employing bacteria-embedded PVA/GA hydrogel for the treatment of municipal wastewater yield promising results which should be further explored in pilot/field-scale studies.read more
Citations
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Journal ArticleDOI
Use of immobilized bacteria for environmental bioremediation: A review
Tithi Mehrotra,Subhabrata Dev,Aditi Banerjee,Abhijit Chatterjee,Rachana Singh,Srijan Aggarwal +5 more
TL;DR: From a sustainable futures perspective, resource recovery and retrieval of value-added products along with bioremediation could be an added benefit of the immobilized cell-based treatment system, making it a more cost-effective and viable treatment strategy as well as one that is amenable to the principles of circular economy.
Journal ArticleDOI
Recent advances in structural modifications of photo-catalysts for organic pollutants degradation - A comprehensive review.
TL;DR: In this article, a review article outlines the different advanced heterostructures synthesized to date for improved degradation of three major organic pollutants: antibiotics, dyes, and pesticides.
Journal ArticleDOI
Polymeric Materials Used for Immobilisation of Bacteria for the Bioremediation of Contaminants in Water.
TL;DR: A review of applications of macroporous hydrogels as tools for the bioremediation of contaminants in wastewater can be found in this paper, where a number of applications have been evaluated.
Journal ArticleDOI
Enhanced bioremediation of 2,3',4,4',5-pentachlorodiphenyl by consortium GYB1 immobilized on sodium alginate-biochar.
TL;DR: In this article, a novel polychlorinated biphenyl degrading consortium GYB1 that can metabolize PCB 118 was successfully obtained by acclimatization process, and the consortium was immobilized with sodium alginate and biochar to prepare SC-GYB1 beads.
Journal ArticleDOI
Reduction of pollution load of tannery effluent by cell immobilization approach using Ochrobactrum intermedium
TL;DR: The results from this flask-scale work suggest that immobilized cell methods of bacterial treatment can potentially be applied in tannery effluent treatment to reduce the pollution load as well as phytotoxic effects.
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