Title of article :
Microbial community dynamics in mesophilic anaerobic co-digestion of mixed waste
Author/Authors :
Supaphol، نويسنده , , Savaporn and Jenkins، نويسنده , , Sasha N. and Intomo، نويسنده , , Pichamon and Waite، نويسنده , , Ian S. and O’Donnell، نويسنده , , Anthony G.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
7
From page :
4021
To page :
4027
Abstract :
This paper identifies key components of the microbial community involved in the mesophilic anaerobic co-digestion (AD) of mixed waste at Rayong Biogas Plant, Thailand. The AD process is separated into three stages: front end treatment (FET); feed holding tank and the main anaerobic digester. The study examines how the microbial community structure was affected by the different stages and found that seeding the waste at the beginning of the process (FET) resulted in community stability. Also, co-digestion of mixed waste supported different bacterial and methanogenic pathways. Typically, acetoclastic methanogenesis was the major pathway catalysed by Methanosaeta but hydrogenotrophs were also supported. Finally, the three-stage AD process means that hydrolysis and acidogenesis is initiated prior to entering the main digester which helps improve the bioconversion efficiency. This paper demonstrates that both resource availability (different waste streams) and environmental factors are key drivers of microbial community dynamics in mesophilic, anaerobic co-digestion.
Keywords :
Mesophilic anaerobic digestion , Canonical correspondence analysis (CCA) , Microbial community structure , Municipal Solid Waste (MSW) , Denaturing gradient gel electrophoresis (DGGE)
Journal title :
Bioresource Technology
Serial Year :
2011
Journal title :
Bioresource Technology
Record number :
1923713
Link To Document :
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