title: Effects of continuous thermophilic composting (CTC) on bacterial community in the active composting process.
abstract: The method of continuous thermophilic composting (CTC) remarkably shortened the active composting cycle and enhanced the compost stability. Effects of CTC on the quantities of bacteria, with a comparison to the traditional composting (TC) method, were explored by plate count with incubation at 30, 40 and 50°C, respectively, and by quantitative PCR targeting the universal bacterial 16S rRNA genes and the Bacillus 16S rRNA genes. The comparison of cultivatable or uncultivatable bacterial numbers indicated that CTC might have increased the biomass of bacteria, especially Bacillus spp., during the composting. Denaturing gradient gel electrophoresis (DGGE) analysis was employed to investigate the effects of CTC on bacterial diversity, and a community dominated by fewer species was detected in a typical CTC run. The analysis of sequence and phylogeny based on DGGE indicated that the continuously high temperature had changed the structure of bacterial community and strengthened the mainstay role of the thermophilic and spore-forming Bacillus spp. in CTC run.
authors: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. xiaoyong1982@msn.com
authors: Yong
authors: Y
authors: Xiao
authors: Guang-Ming
authors: GM
authors: Zeng
authors: Zhao-Hui
authors: ZH
authors: Yang
authors: Yan-He
authors: YH
authors: Ma
authors: Cui
authors: C
authors: Huang
authors: Wen-Jun
authors: WJ
authors: Shi
authors: Zheng-Yong
authors: ZY
authors: Xu
authors: Jing
authors: J
authors: Huang
authors: Chang-Zheng
authors: CZ
authors: Fan
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