An innovative U-shaped sludge bed anammox process for nitrogen removal

Cui, Fenghao; Kim, Minkyung; Kim, Moonil

doi:10.1016/j.jenvman.2018.08.056

Cited by 7 publications

(1 citation statement)

References 35 publications

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“…In situ remediation is a powerful technology for treating contaminated sediments by efficiently degrading organic matter and controlling the release of pollutants to the overlying water body (Cui et al 2018;Li et al 2019). In addition, calcium nitrate, sodium percarbonate, and domesticated bacteria are effective reagents in remediation technologies (de Alencar et al 2017;Pan et al 2018;Tang et al 2018;Shen et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of remediation reagents on bacterial composition and ecological function in black-odorous water sediments

et al. 2022

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Black-odorous urban water bodies and sediments pose a serious environmental problem. In this study, we conducted microcosm batch experiments to investigate the effect of remediation reagents (magnesium hydroxide and calcium nitrate) on native bacterial communities and their ecological functions in the black-odorous sediment of urban water. The dominant phyla (Proteobacteria, Actinobacteria, Chloroflexi, and Planctomycetes) and classes (Alphaproteobacteria, Betaproteobacteria, and Gammaproteobacteria, Actinobacteria, Anaerolineae, and Planctomycetia) were determined under calcium nitrate and magnesium hydroxide treatments. Functional groups related to aerobic metabolism, including aerobic chemoheterotrophy, dark sulfide oxidation, and correlated dominant genera (Thiobacillus, Lysobacter, Gp16, and Gaiella) became more abundant under calcium nitrate treatment, whereas functional genes potentially involved in dissimilatory sulfate reduction became less abundant. The relative abundance of chloroplasts, fermentation, and correlated genera (Desulfomonile and unclassified Cyanobacteria) decreased under magnesium hydroxide treatment. Overall, these results indicated that calcium nitrate addition improved hypoxia-related reducing conditions in the sediment and promoted aerobic chemoheterotrophy.

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