Biomethanation and microbial community response during agricultural biomass and shrimp chaff digestion

Gohar Ali; Zhenmin Ling; Irfan Saif; Muhammad Usman; Mohammed Jalalah; Farid A Harraz; M S Al-Assiri; El-Sayed Salama; Xiangkai Li

doi:10.1016/j.envpol.2021.116801

Biomethanation and microbial community response during agricultural biomass and shrimp chaff digestion

Environ Pollut. 2021 Jun 1:278:116801. doi: 10.1016/j.envpol.2021.116801. Epub 2021 Feb 22.

Authors

Gohar Ali¹, Zhenmin Ling², Irfan Saif¹, Muhammad Usman¹, Mohammed Jalalah³, Farid A Harraz⁴, M S Al-Assiri⁵, El-Sayed Salama⁶, Xiangkai Li¹

Affiliations

¹ MOE, Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou, 730000, Gansu Province, PR China.
² MOE, Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou, 730000, Gansu Province, PR China. Electronic address: [email protected].
³ Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia; Department of Electrical Engineering, Faculty of Engineering, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia.
⁴ Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia; Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), P.O. 87 Helwan, Cairo, 11421, Egypt.
⁵ Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia.
⁶ Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, 730000, Gansu Province, PR China. Electronic address: [email protected].

PMID: 33689949
DOI: 10.1016/j.envpol.2021.116801

Abstract

Anaerobic digestion, a promising technology for waste utilization and bioenergy generation, is a suitable approach to convert the shrimp waste to biomethane, reducing its environmental impact. In this study, shrimp chaff (SC) was co-digested corn straw (CS), wheat straw (WS), and sugarcane bagasse (SB). In co-digestion, SC enhanced biomethane production of CS by 8.47-fold, followed by SC + WS (5.67-folds), and SC + SB (3.37-folds). SC addition to agricultural biomass digestion also promoted the volatile solids removal up to 85%. Microbial community analysis of SC and CS co-digestion presented the dominance of phylum Bacteroidetes, Firmicutes, Proteobacteria, and Euryarchaeota. Proteolytic bacteria were dominant (18.02%) during co-digestion of SC and CS, with Proteiniphilum as major bacterial genera (14%) that converts complex proteinaceous substrates to organic acids. Among the archaeal community, Methanosarcina responsible for conversion of acetate and hydrogen to biomethane, increased up to 70.77% in SC and CS digestion. Addition of SC to the digestion of agricultural wastes can significantly improve the biomethane production along with its effective management to reduce environmental risks.

Keywords: Agricultural wastes; Biomethane enhancement; Microbial diversity; Protein co-digestion; Shrimp chaff.

MeSH terms

Anaerobiosis
Biofuels
Biomass
Bioreactors
Digestion
Methane*
Microbiota*

Substances

Biofuels
Methane