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Experimental and Kinetics Studies for Biogas Production Using Water Hyacinth (Eichhornia crassipes [Mart.] Solms) and Sugar Mill Effluent.

Authors :
Kumar, Vinod
Singh, Jogendra
Nadeem, M.
Kumar, Pankaj
Pathak, V. V.
Source :
Waste & Biomass Valorization; Jan2020, Vol. 11 Issue 1, p109-119, 11p
Publication Year :
2020

Abstract

The present study investigated the kinetics of biogas production by co-digestion of Eichhornia crassipes supplemented with sugar mill effluent. The influence of digester temperature (30 and 40 °C) on biogas production during the anaerobic digestion of mixed substrates was evaluated. Experimental values obtained in 15 days batch study revealed that the digester incubated at 40 °C produced higher biogas production (6771 mL) than the digester incubated at 30 °C (6325 mL). For digester incubated at 40 °C, value of kinetic constants i.e. µ<subscript>m</subscript> (biogas production potential), λ (lag phase) and P (cumulative biogas production) were 0.21 day<superscript>−1</superscript>, 8.89 days and 6862.60 mL, respectively, while values of µ<subscript>m,</subscript>λ and P for other digester (incubated at 30 °C) were 0.20 day<superscript>−1</superscript>, 9.47 days and 6426.47 mL, respectively. Modified Gompertz plot showed significant coefficient of determination (0.99) for co-digestion process at both temperatures. Digester incubated at 40 °C was found with maximum drop in pH (6.4), chemical oxygen demand (488.89 mg L<superscript>−1</superscript>), total solids (21.49%), total kjeldahl nitrogen (0.82%), total organic carbon (14.19%) and volatile solids (16.53%) on 15th day of hydraulic retention time. Analysis of co-substrate by Fourier transform infrared spectroscopy further confirmed the presence of organic compounds responsible for biogas production. These results proved that biogas production can be enhanced in co-digestion process at 40 °C with simultaneous treatment of industrial effluent. The present study will be useful for the integrated management of biomass and industrial waste for energy recovery. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
18772641
Volume :
11
Issue :
1
Database :
Complementary Index
Journal :
Waste & Biomass Valorization
Publication Type :
Academic Journal
Accession number :
141099310
Full Text :
https://doi.org/10.1007/s12649-018-0412-9