Effect of pre-treatment on anaerobic biodegradability of Gracilaria verrucosa

Suhartini, S and Sihaloho, R and Rahmah, N L and Nurika, I and Junaidi, M A and Paul, R. and Melville, L. (2020) Effect of pre-treatment on anaerobic biodegradability of Gracilaria verrucosa. IOP Conference Series: Earth and Environmental Science, 475 (1). 012064. ISSN 1755-1315

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Abstract

Abstract: In global world, increasing needs of energy is parallel to the increase of population. The limitation of land availability and change of land use has turning the focus into marine biomass, especially macroalgae, as renewable energy feedstocks. Indonesia is one of the biggest countries producing marine macroalgae. The aim of this research was to evaluate the impact of washing pre-treatment on the characteristics of macroalgae and its biodegradability in anaerobic digestion process. In this study, a biochemical methane potential (BMP) test was carried out using fresh macroalgae, specifically Gracilaria verrucosa. The ratio of inoculum to substrate was 6:1 with operation temperature of 37 °C and incubated for 28 days. Prior the BMP test, the G. verrucosa samples were washed with flowing water for 10 minutes. The findings confirmed for washing pre-treatment was significantly enhance cumulative biogas and methane production by more than 50%. The specific methane potential (SMP) of washed G. verrucosa increased by six-fold, with the value of 0.108 m3 CH4 / kg VS. In this case, reduction of salinity concentration after washing may play an important role in increasing the anaerobic degradability. It was estimated that a high electricity potential is generated from anaerobic digestion of G. verrucosa after washing pre-treatment.

Item Type: Article
Additional Information: ** From IOP Publishing via Jisc Publications Router ** History: ppub 04-2020; open-access 01-04-2020. ** Licence for this article: http://creativecommons.org/licenses/by/3.0/
Identification Number: https://doi.org/10.1088/1755-1315/475/1/012064
Date: 1 April 2020
Subjects: H800 Chemical, Process and Energy Engineering
Divisions: Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment > Resilient Environments
SWORD Depositor: JISC PubRouter
Depositing User: JISC PubRouter
Date Deposited: 12 Jun 2020 10:06
Last Modified: 12 Jun 2020 10:06
URI: http://www.open-access.bcu.ac.uk/id/eprint/9219

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