Performance of a haloalkaliphilic bioreactor under different NO3(-)/SO4(2-) ratios

Autor:	Jie-Min, Zhou, Zi-Yu, Song, Dao-Jiang, Yan, Yi-Lan, Liu, Mao-Hua, Yang, Hong-Bin, Cao, Jian-Min, Xing
Rok vydání:	2013
Předmět:	Nitrates Bacteria Ethanol Denaturing Gradient Gel Electrophoresis Sulfates Molecular Sequence Data Biodiversity Alkalies Sulfides Fatty Acids Volatile Waste Disposal Fluid Bioreactors Halogens RNA Ribosomal 16S Denitrification Lactates Oxidation-Reduction Phylogeny
Zdroj:	Bioresource technology. 153
ISSN:	1873-2976
Popis:	Effects of NO3(-)/SO4(2-) ratio on denitrification and sulfate removal efficiency were investigated in model experiments applying haloalkaliphilic bioreactor. The reduction of both substrates performed well at different NO3(-)/SO4(2-) ratios ranging from 17.6 to l.5. The removal rates of nitrate and sulfate were 6 and 1.39kgm(-3)d(-1), respectively, at NO3(-)/SO4(2-) ratio 3.0, while sulfide concentration reached up to 703gm(-3). The major sulfate-reducing and denitrifying bacteria were Desulfonatronovibrio sp. and Halomonas campisalis, respectively. Decrease in NO3(-)/SO4(2-) ratio led to obvious changes in bacterial community. Although the sulfate reducers became dominant, the population of denitrifying ones also increased as it was demonstrated by analysis of PCR-amplified 16S rDNA fragments, which suggested that SRB and DB coexisted well in bioreactor.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid________::8232eac5b932a89c85f5f78cd240c598 https://pubmed.ncbi.nlm.nih.gov/24368270 Zobrazit plný text záznamu Full Text from ScienceDirect