Effect of temperature on thermophilic composting of aquaculture sludge: NH3 recovery, nitrogen mass balance, and microbial community dynamics

Citation

Koyama, Mitsuhiko and Nagao, Norio and Syukri, Fadhil and Abd Rahim, Abdullah and Kamarudin, Mohd Salleh and Toda, Tatsuki and Mitsuhashi, Takuya and Nakasaki, Kiyohiko (2018) Effect of temperature on thermophilic composting of aquaculture sludge: NH3 recovery, nitrogen mass balance, and microbial community dynamics. Bioresource Technology, 265. 207 - 213. ISSN 0960-8524; ESSN: 1873-2976

Abstract

Development of thermophilic composting for maximizing NH3 gas recovery would enable the production of a nitrogen source which is free from pathogen/heavy metal, for the cultivation of high-value microalgae. The present study examined the effect of NH3 recovery, nitrogen mass balance, and microbial community dynamics on thermophilic composting of shrimp aquaculture sludge. The emission of NH3 gas at 60 and 70 °C was 14.7% and 15.6%, respectively, which was higher than that at 50 °C (9.0%). The nitrogen mass balance analysis revealed that higher temperatures enhanced the solubilization of non-dissolved nitrogen and liberation of NH3 gas from the produced NH4+-N. High-throughput microbial community analysis revealed the shift of the dominant bacterial group from Bacillus to Geobacillus with the rise of composting temperature. In conclusion, thermophilic composting of shrimp aquaculture sludge at 60–70 °C was the most favorable condition for enhancing NH3 gas recovery.

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Additional Metadata

Item Type:	Article
Divisions:	Faculty of Agriculture
DOI Number:	https://doi.org/10.1016/j.biortech.2018.05.109
Publisher:	Elsevier
Keywords:	Aquaculture sludge; Composting; Ammonia gas recovery; Next-generation sequencing
Depositing User:	Nurul Ainie Mokhtar
Date Deposited:	16 Jun 2020 03:03
Last Modified:	16 Jun 2020 03:03
Altmetrics:	http://psasir.upm.edu.my/cgi/users/home?_buffer_order=eprintid&screen=Items&_buffer__offset=96010.1016/j.biortech.2018.05.109
URI:	http://psasir.upm.edu.my/id/eprint/72459
Statistic Details:	View Download Statistic

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