한빛사논문
Shouvik Saha1, Bikram Basak1, Jae-Hoon Hwang2, El-Sayed Salama3, Pradip K. Chatterjee4, Byong-Hun Jeon1,*
1Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 133-791, Republic of Korea
2Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, FL 32816-2450, USA
3Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou 730-000, Gansu Province, PR China
4Energy Research and Technology Group, CSIR Central Mechanical Engineering Research Institute, Durgapur 713-209, India
*Corresponding author
Abstract
Biomethanation through anaerobic digestion (AD) is the most reliable energy harvesting process to achieve waste-to-energy. Microbial communities, including hydrolytic and fermentative bacteria, syntrophic bacteria, and methanogenic archaea, and their interspecies symbioses allow complex metabolisms for the volumetric reduction of organic waste in AD. However, heterogeneity in organic waste induces community shifts in conventional anaerobic digesters treating sewage sludge at wastewater treatment plants globally. Assessing the metabolic roles of individual microbial species in syntrophic communities remains a challenge, but such information has important implications for microbially enhanced energy recovery. This review focuses on the alterations in digester microbiome and intricate interspecies networks during substrate variation, symbiosis among the populations, and their implications for biomethanation to aid stable operation in real-scale digesters.
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