Bioenergy production from swine wastewater based on a combined process of anaerobic dynamic membrane reactor and microalgae cultivation: Feasibility and performance

Jialing Tang; Hao Yang; Yunhui Pu; Yisong Hu; Xiangjiang Qu; Si Chen; Xiaochang C Wang; Huu Hao Ngo; Yuyou Li; Abdelfatah Abomohra

doi:10.1016/j.scitotenv.2023.165621

Bioenergy production from swine wastewater based on a combined process of anaerobic dynamic membrane reactor and microalgae cultivation: Feasibility and performance

Sci Total Environ. 2023 Nov 15:899:165621. doi: 10.1016/j.scitotenv.2023.165621. Epub 2023 Jul 19.

Authors

Jialing Tang¹, Hao Yang², Yunhui Pu³, Yisong Hu⁴, Xiangjiang Qu², Si Chen², Xiaochang C Wang⁴, Huu Hao Ngo⁵, Yuyou Li⁶, Abdelfatah Abomohra⁷

Affiliations

¹ Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China; Key Lab of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China. Electronic address: tangjialing88@126.com.
² Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China.
³ Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China; College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
⁴ Key Lab of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Xi'an 710055, China.
⁵ Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
⁶ Department of Civil and Environmental Engineering, Tohoku University, Sendai 9808579, Japan.
⁷ Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China; Aquatic Ecophysiology and Phycology, Institute of Plant Science and Microbiology, University of Hamburg, 22609 Hamburg, Germany. Electronic address: abdelfatah.abomohra@uni-hamburg.de.

PMID: 37478944
DOI: 10.1016/j.scitotenv.2023.165621

Abstract

Enhanced methane production and sustainable reduction of pollutants from anaerobic digestate are crucial for swine wastewater treatment. In this study, anaerobic dynamic membrane bioreactor (AnDMBR) was introduced to enhance methane production, then microalgae were cultivated on the digestate for nutrients recovery and lipid production. Results showed that pollutants can be effectively removed under various hydraulic retention time (HRT) conditions during long-term operation. Methanogenesis was enhanced with the reduction of HRT from 20 days to 10 days (0.23 L-CH₄/g-COD_removed), but inhibited by shortening HRT to 5 days (0.09 L-CH₄/g-COD_removed). Ammonia and phosphate in the digestate were effectively removed after microalgae cultivation. In addition, the highest microalgal biomass and lipid productivity (1.7 g/L and 17.5 mg/(L·d), respectively) were obtained using digestate ratio of 20 %, while microalgal growth was seriously restricted at high digestate content (>50 %). This work provides a prospective pathway for pollutants control and energy production from swine wastewater through integrating of AnDMBR technology with microalgae cultivation.

Keywords: AnDMBR; Biomethane; Lipids; Microalgae cultivation; Swine wastewater.

MeSH terms

Anaerobiosis
Animals
Biofuels
Biomass
Feasibility Studies
Lipids
Methane / metabolism
Microalgae* / metabolism
Prospective Studies
Swine
Wastewater*

Substances

Wastewater
Biofuels
Methane
Lipids