Characterization of a microbial community capable of reducing perchlorate and nitrate in high salinity.
Denitrifying up-flow packed-bed bioreactors fed with perchlorate and nitrate allowed for the examination of the impact of a variety of salt conditions (up to 10% w/v NaCl) on the complete perchlorate and nitrate removal capacity of the reactor using activated sludge taken from a municipal wastewater treatment plant. Based on the evaluation of the microbial community in the bioreactor by cloning analysis, Clostridium sp. and a Rhodocyclaceae bacteria were identified as the dominant clones. This suggests that they may be tolerant to high salt and can reduce both nitrate and perchlorate in such conditions.
Chung
Jinwook
J
R&D Center, Samsung Engineering Co. Ltd, 415-10 Woncheon-Dong, Youngting-Gu, Suwon, Gyeonggi-Do, 443-823, Korea. jin-wook.chung@samsung.com
Shin
Sunghoon
S
Oh
Jeill
J
D001419:Bacteria / Q000145:classification* / Q000302:isolation & purification / Q000378:metabolism*; D019149:Bioreactors / Q000382:microbiology*; D003013:Clostridium / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D009566:Nitrates / Q000378:metabolism*; D010472:Perchlorates / Q000378:metabolism*; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D043362:Rhodocyclaceae / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism; D054712:Salinity; D017422:Sequence Analysis, DNA; D012722:Sewage / Q000382:microbiology
D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D009566:Nitrates; D010472:Perchlorates; D012336:RNA, Ribosomal, 16S; D012722:Sewage; C494474:perchlorate