Treatment of wastewater at secondary stage is dependent on microbial activity for removal of solu... more Treatment of wastewater at secondary stage is dependent on microbial activity for removal of soluble organic pollutants, which is challenging in case of industrial wastewater. There are certain organic compounds in this wastewater which are recalcitrant or degraded scarcely, including aromatic hydrocarbon pollutants. Hence, it is challenging to achieve the desired standard limit for safe effluent discharge. In the present study, a novel bacterial consortium produced high and steady voltage output (0.6 V) and a moderate level of exopolysaccharide, comprised of Stenotrophomonas maltophilia KO014, Bacillus subtilis EPS040, Pseudomonas stutzeri EPS026 and Shewanella xiamenensis KRTO021, which could successfully develop biofilm on electrode surface. Microbial fuel cell reduced chemical oxygen demand (COD) and biochemical oxygen demand (BOD) up to 49.9 % (1098 ppm to 550 ppm) and 47.6 % (447 ppm to 234 ppm) respectively from synthetic wastewater containing sodium benzoate as model aromatic hydrocarbon pollutant. Barium ferrite (BaFe 12 O 19) NPs synthesized using Moringa oleifera flower has excellent multiferroic properties and show photocatalytic degradation capacity due to its optical band gap (2.18 eV) which falls within visible range. Hence, it could act as photocatalyst under visible light and could further reduce the residual COD and BOD levels of MFC treated water by 44 % (550 ppm to 308 ppm) and 65.8 % (234 ppm to 80 ppm) respectively emphasizing its useful application as non-biological treatment method for further removal of residual SB present in MFC treated water.
Treatment of wastewater at secondary stage is dependent on microbial activity for removal of solu... more Treatment of wastewater at secondary stage is dependent on microbial activity for removal of soluble organic pollutants, which is challenging in case of industrial wastewater. There are certain organic compounds in this wastewater which are recalcitrant or degraded scarcely, including aromatic hydrocarbon pollutants. Hence, it is challenging to achieve the desired standard limit for safe effluent discharge. In the present study, a novel bacterial consortium produced high and steady voltage output (0.6 V) and a moderate level of exopolysaccharide, comprised of Stenotrophomonas maltophilia KO014, Bacillus subtilis EPS040, Pseudomonas stutzeri EPS026 and Shewanella xiamenensis KRTO021, which could successfully develop biofilm on electrode surface. Microbial fuel cell reduced chemical oxygen demand (COD) and biochemical oxygen demand (BOD) up to 49.9 % (1098 ppm to 550 ppm) and 47.6 % (447 ppm to 234 ppm) respectively from synthetic wastewater containing sodium benzoate as model aromatic hydrocarbon pollutant. Barium ferrite (BaFe 12 O 19) NPs synthesized using Moringa oleifera flower has excellent multiferroic properties and show photocatalytic degradation capacity due to its optical band gap (2.18 eV) which falls within visible range. Hence, it could act as photocatalyst under visible light and could further reduce the residual COD and BOD levels of MFC treated water by 44 % (550 ppm to 308 ppm) and 65.8 % (234 ppm to 80 ppm) respectively emphasizing its useful application as non-biological treatment method for further removal of residual SB present in MFC treated water.
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Papers by Vishwata Patel