Effect of thermal and NaOH pretreatment on water hyacinth to enhance the biogas production.

Autor: Show BK; Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India., Shivakumaran G; Department of Microbiology, PSG College of Arts and Sciences, Coimbatore, Tamil Nadu 641 014, India., Koley A; Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India., Ghosh A; Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India., Chaudhury S; Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India. shibani.chaudhury@visva-bharati.ac.in., Hazra AK; Department of Lifelong Learning and Extension, Palli-Samgathana Vibhaga, Visva-Bharati (A Central University), Sriniketan, West Bengal, 731236, India., Balachandran S; Bioenergy Laboratory, Department of Environmental Studies, Siksha-Bhavana, Visva-Bharati (A Central University), Santiniketan, West Bengal, 731235, India.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 Dec; Vol. 30 (57), pp. 120984-120993. Date of Electronic Publication: 2023 Nov 10.
DOI: 10.1007/s11356-023-30810-3
Abstrakt: Water hyacinth (WH) is used as the substrate for biogas production due to its high lignocellulosic composition and natural abundance. The present study used thermal and chemical (alkali) pretreatment techniques to enhance biogas production from water hyacinth used as a substrate by anaerobic digestion. Thermal pretreatment was done using an autoclave at 121 °C and 15 lb (2 bar) pressure and alkali pretreatment by NaOH at two concentrations (2% and 5% w/v). The inoculum:substrate ratio for biogas production was 2:1, where cow dung was used as inoculum. Results indicated that the pretreatments increased biomass degradability and improved biogas production. Water hyacinth pretreated with 5% NaOH produced the highest amount of biogas (142.61 L/Kg VS) with a maximum methane content of 64.59%. The present study found that alkali pretreatment can modify the chemical structure and enhance WH hydrolysis, leading to enhanced energy production.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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