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• W4294114306 abstract "Distillery spent wash (DSW), a complex wastewater rich in sulphates, organic matter and other contaminants when treated through anaerobic digestion process leads to digester failures due to sulphide inhibition and organic shock loading. Therefore, this work demonstrated the biomethanation of DSW to optimize the initial organic load (IOL) and substrate to inoculum (S/I) ratio in phase I experiments. In phase II, the impact of additives i.e., FeCl 3 salts and its nanoparticles at optimized S/I ratio was investigated. The impact of S/I ratio, organic load and additives materials on methane yield, quality of biogas (H 2 S and CH 4 ), microbial diversity and organic matter removal has been studied thoroughly. Results in phase I experiments disclosed that the dilution of wastewater to reduce COD/SO 4 2− ratios favoured the process and the optimum IOL at which the maximum CH 4 yield of 0.7 and 0.6 L/g COD R that can be achieved was 70 g/L and 35 g/L at an S/I ratio of 2:1 compared to control i.e., 0.3 L/g COD R . However, the H 2 S and CH 4 in biogas ranged between 2 and 2.4 % and 60–64 % respectively. From phase II experiments, comparable CH 4 yields of 0.67 and 0.65 L/g COD R were obtained by the application of FeCl 3 NPs and salts at optimized IOL and S/I ratio but the H 2 S in biogas substantially decreased to <0.05 % and the CH 4 improved to 72 %. Therefore, addition of FeCl 3 either in the form of salts or NPs favoured biomethanation process and enhanced the overall performance. • Biogas from distillery spent wash (DSW) at varying initial organic load & S/I ratio. • Salts & nanoparticles (NPs) of FeCl 3 played key role in sulphide inhibition control. • DSW at an IOL of 70 g/L and S/I of 2:1 resulted in yield of 0.76 L CH 4 /g COD reduced . • Substantial decrease in H 2 S in biogas from 2.5 % to <0.05 % using salts & NPs • Reactors at an IOL of 35 & 70 g/L added FeCl 3 NPs were dominated by Methanosaeta ." @default.
• W4294114306 created "2022-09-02" @default.
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• W4294114306 date "2022-10-01" @default.
• W4294114306 modified "2023-09-27" @default.
• W4294114306 title "Relative evaluation of FeCl3 salts and its nanoparticles on methane yield and sulphide inhibition control during biomethanation of distillery spent wash" @default.
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• W4294114306 doi "https://doi.org/10.1016/j.jwpe.2022.103068" @default.
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