Influence of temperature fluctuation on thermophilic anaerobic digestion of municipal organic solid waste / 浙江大学学报(英文版)(B辑:生物医学和生物技术)
Journal of Zhejiang University. Science. B
;
(12): 180-185, 2006.
Artigo
em Inglês
| WPRIM
| ID: wpr-263202
ABSTRACT
A laboratory-scale experiment was carried out to assess the influence of temperature fluctuation on thermophilic anaerobic digestion of municipal organic solid waste (MOSW). Heating failure was simulated by decreasing temperature suddenly from 55 degrees C to 20 degrees C suddenly; 2 h time is needed for temperature decrease and recovery. Under the conditions of 8.0 g/(L.d) and 15 d respectively for MOSW load and retention time, following results were noted (1) biogas production almost stopped and VFA (volatile fatty acid) accumulated rapidly, accompanied by pH decrease; (2) with low temperature (20 degrees C) duration of 1, 5, 12 and 24 h, it took 3, 11, 56 and 72 h for the thermophilic anaerobic digestion system to reproduce methane after temperature fluctuation; (3) the longer the low temperature interval lasted, the more the methanogenic bacteria would decay; hydrolysis, acidification and methanogenesis were all influenced by temperature fluctuation; (4) the thermophilic microorganisms were highly resilient to temperature fluctuation.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fisiologia
/
Esgotos
/
Temperatura
/
Bactérias Anaeróbias
/
Biodegradação Ambiental
/
Sobrevivência Celular
/
Eliminação de Resíduos
/
Cidades
/
Archaea
/
Biologia Celular
Idioma:
Inglês
Revista:
Journal of Zhejiang University. Science. B
Ano de publicação:
2006
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS