The use of sludge as a micronutrient for the improvement of biogas production from seaweed: the integration of two sources of environmental concern to bring new opportunities

Rezaei, Mostafa, Ebrahimi‐Nik, Mohammadali, Tedesco, Silvia ORCID: https://orcid.org/0000-0003-2447-3673 and Zeynali, Reyhaneh (2021) The use of sludge as a micronutrient for the improvement of biogas production from seaweed: the integration of two sources of environmental concern to bring new opportunities. Biofuels, Bioproducts and Biorefining, 15 (6). pp. 1850-1858. ISSN 1932-104X

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Abstract

Large quantities of seaweed in marine environments and coastal areas can cause serious hygienic and environmental problems. Anaerobic digestion (AD) could provide a solution and could also be useful for the production of bioenergy and fertilizer. However, the AD of algae biomass has some limitations and further work is required on the process. To increase the efciency of the process, batches of 350 mL feedstock containing seaweed biomass (Sargassum sp.), inoculum, and different dosages of sludge from drinking water treatment (DWTS) as a micronutrient source to improve biogas production were digested in a 500 mL glass reactor and under mesophilic conditions, leading to signicantly enhanced methane production. The highest methane yield (199 NmL g−1 VS) was observed when 6mg L−1 DWTS was added, which showed a 30% improvement compared with the control digester and accounted for a 249.4 kWh increase in net energy per ton. The biodegradability index also increased by 10% compared with the control after the addition of DWTS.

Item Type:	Article
Peer-reviewed:	Yes
Date Deposited:	17 Sep 2021 11:46
Publisher:	Wiley
Additional Information:	This is the peer reviewed version of the following article: Rezaei, M., Ebrahimi-Nik, M., Tedesco, S. and Zeynali, R. (2021), The use of sludge as a micronutrient for the improvement of biogas production from seaweed: the integration of two sources of environmental concern to bring new opportunities. Biofuels, Bioprod. Bioref., 15: 1850-1858., which has been published in final form at https://doi.org/10.1002/bbb.2284. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Divisions:	Faculties > Science and Engineering
Subject terms:	algae, anaerobic digestion, biodegradability index, drinking water treatment sludge, trace element, Science & Technology, Life Sciences & Biomedicine, Technology, Biotechnology & Applied Microbiology, Energy & Fuels, anaerobic digestion, biodegradability index, drinking water treatment sludge, algae, trace element, ANAEROBIC CO-DIGESTION, TRACE-ELEMENT SUPPLEMENTATION, FOOD WASTE, MACROALGAL BIOMASS, METHANE PRODUCTION, FERRIC OXIDES, ALGAL BIOMASS, WATER, IRON, STRATEGIES, 09 Engineering, 10 Technology, Biotechnology
Report number:	bbb.2284
URI:	https://e-space.mmu.ac.uk/id/eprint/628409
DOI:	https://doi.org/10.1002/bbb.2284
ISSN	1932-104X
e-ISSN	1932-1031

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