Effect of Predigestion Process Modifications on VFA Enhancement and Overall Biogas Conversion from Kitchen Solid Waste

Journal of Scientific & Industrial Research, 75, 574-582.

9 Pages Posted: 25 May 2017

See all articles by Sandip Magdum

Sandip Magdum

R.D. Aga Research, Technology and Innovation Centre, Thermax Ltd.

Upendra Adhyapak

Thermax Ltd.

Gauri Minde

Thermax Ltd.

Janardhan Bornare

Thermax Ltd.

V. Kalyanraman

Thermax Ltd.

Date Written: Sep 24, 2016

Abstract

The bioprocessing methodology of predigester has been modified to optimize the kitchen solid waste processing for enhanced biogas production. The batch and semi-batch study of bioprocess modification in the predigester by adding Candida sp. to acetogenic predigester culture with controlled aeration (micro-aerobic) has shown the enhancement in volatile fatty acid (VFA) in predigestion. The study of pilot plant which was operated with 24 - 30 days of hydraulic retention time (HRT) with average rate of feeding was 67-82 kg-wet/day. The experiment resulted with average volatile fatty acid (VFA) concentration of 25.41 g/l enhanced from 18.04 g/l in predigestion and ultimately average biogas production increased to 16.23 m3/day from 6.76 m3/day. The efficiency of biogas production per unit feed processed was enhanced from 0.099 m3/kg-wet to 0.2 m3/kg-wet. The present study of waste to energy technology offers a promising decentralized alternative for organic solids/ food waste utilization for enhanced biogas production.

Keywords: Anaerobic, Bacteria, Biodegradation, Biogas, Candida

Suggested Citation

Magdum, Sandip and Adhyapak, Upendra and Minde, Gauri and Bornare, Janardhan and Kalyanraman, V., Effect of Predigestion Process Modifications on VFA Enhancement and Overall Biogas Conversion from Kitchen Solid Waste (Sep 24, 2016). Journal of Scientific & Industrial Research, 75, 574-582.. Available at SSRN: https://ssrn.com/abstract=2973167

Sandip Magdum (Contact Author)

R.D. Aga Research, Technology and Innovation Centre, Thermax Ltd. ( email )

Pune, 411019
India

Upendra Adhyapak

Thermax Ltd. ( email )

14 Mumbai-Pune Road
Pune, 411 003
India

Gauri Minde

Thermax Ltd. ( email )

14 Mumbai-Pune Road
Pune, 411 003
India

Janardhan Bornare

Thermax Ltd. ( email )

14 Mumbai-Pune Road
Pune, 411 003
India

V. Kalyanraman

Thermax Ltd. ( email )

14 Mumbai-Pune Road
Pune, 411 003
India

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