Improvement of the trace metal composition of medium for nitrite-dependent anaerobic methane oxidation bacteria: Iron (II) and copper (II) make a difference

Water Research
Zhanfei HeBaolan Hu

Abstract

Nitrite-dependent anaerobic methane oxidation (n-damo) is a potential bioprocess for treating nitrogen-containing wastewater. This process uses methane, an inexpensive and nontoxic end-product of anaerobic digestion, as an external electron donor. However, the low turnover rate and slow growth rate of n-damo functional bacteria limit the practical application of this process. In the present study, the short- and long-term effects of variations in trace metal concentrations on n-damo bacteria were investigated, and the concentrations of trace metal elements of medium were improved. The results were subsequently verified by a group of long-term inoculations (90 days) and were applied in a sequencing batch reactor (SBR) (84 days). The results indicated that iron (Fe(II)) and copper (Cu(II)) (20 and 10 μmol L(-1), respectively) significantly stimulated the activity and the growth of n-damo bacteria, whereas other trace metal elements, including zinc (Zn), molybdenum (Mo), cobalt (Co), manganese (Mn), and nickel (Ni), had no significant effect on n-damo bacteria in the tested concentration ranges. Interestingly, fluorescence in situ hybridization (FISH) showed that a large number of dense, large aggregates (10-50 μm) of n-damo bacte...Continue Reading

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Citations

Mar 30, 2016·Applied Microbiology and Biotechnology·Zhanfei HeBaolan Hu
May 4, 2016·Journal of Hazardous Materials·Ahmed J Mugwar, Michael J Harbottle
Sep 2, 2016·Scientific Reports·Zhanfei HeBaolan Hu
Feb 17, 2019·Applied and Environmental Microbiology·Simon Guerrero-CruzBoran Kartal
Jun 23, 2019·Applied Microbiology and Biotechnology·Karin StultiensHuub J M Op den Camp
Dec 20, 2018·Environmental Science and Pollution Research International·Juqing LouJingyi Han
Jan 9, 2021·The Science of the Total Environment·Jiali ChangXia Huang
Dec 15, 2020·The Science of the Total Environment·Jing Ding, Raymond Jianxiong Zeng
Mar 18, 2021·Environmental Science and Pollution Research International·George Kwame Amoako-NimakoFangmin Chen
Aug 8, 2021·The Science of the Total Environment·Fengguang ChaiJunxin Liu

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