Comparative Granular Characteristics of Mesophilic and Thermophilic UASB Producing Biogas from Palm Oil Mill Effluent

被引:4
|
作者
Tanikkul, Pinanong [1 ]
Phalakornkule, Chantaraporn [2 ,3 ]
Champreda, Verawat [4 ]
Pisutpaisal, Nipon [1 ,3 ]
机构
[1] King Mongkuts Univ Technol North Bangkok, Fac Sci Appl, Dept Agroind Food & Environm Technol, Bangkok 10800, Thailand
[2] King Mongkuts Univ Technol North Bangkok, Dept Chem Engn, Bangkok 10800, Thailand
[3] King Mongkuts Univ Technol North Bangkok, Res & Technol Ctr Renewable Prod & Energy, Bangkok 10800, Thailand
[4] Natl Ctr Genet Engn & Biotechnol, Bioresources Technol Unit, Enzyme Technol Lab, Thailand Sci Pk, Khlong Luang 12120, Pathum Thani, Thailand
来源
2ND INTERNATIONAL CONFERENCE ON BIOMASS (ICONBM 2016) | 2016年 / 50卷
关键词
PHYLOGENETIC ANALYSIS;
D O I
10.3303/CET1650035
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study investigated granular characteristics and microbial profiles in granules from the upflow anaerobic sludge blanket (UASB) reactor treating palm oil mill effluent at a thermophilic temperature of 60 degrees C in comparison with a mesophilic UASB. Phylogenetic analysis of microbial communities in sludge granules from both reactors based on bacterial 16S rRNA and archaeal mcrA genes revealed different bacterial and archaeal communities under the different operating conditions. The bacterial community under the mesophilic condition was composed mainly of Proteobacteria, Firmicutes and Chloroflexi while a less complex community comprising mainly Proteobacteria and Actinobacteria was present under the thermophilic condition. The mesophilic methanogen assemblage was found to be comprised mainly of those related to uncultured methanogens in class Methanomicrobiales and Methanobacteriales. The thermophilic methanogen community was dominated by those related to class Methanosarcinales in addition to some Methanobacteriales. Most were closely related to Methanosaeta thermophilia. The microbial community structures suggested that different methanogenesis pathways dominated under the mesophilic and thermophilic conditions and implied different capabilities of extracellular polymer production which affected reactor performance.
引用
收藏
页码:205 / 210
页数:6
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