An Eco-tank system containing microbes and different aquatic plant species for the bioremediation of N,N-dimethylformamide polluted river waters

Xiao, Jibo; Chu, Shuyi; Tian, Guangming; Thring, Ronald W.; Cui, Lingzhou

doi:10.1016/j.jhazmat.2016.07.037

Cited by 42 publications

(7 citation statements)

References 39 publications

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“…redox processes) [28]. Consequently, artificial aeration is a commonly employed technique used to increase DO in hypereutrophic urban river systems [29]. However, the air bubbles produced by many aeration devices are rapidly lost in shallow urban rivers leading to low oxygen transfer and utilization efficiencies by biological processes.…”

Section: Introductionmentioning

confidence: 99%

Influence of a biofilm bioreactor on water quality and microbial communities in a hypereutrophic urban river

Cai

Yao

Sheng

et al. 2019

Environmental Technology

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Biofilms play an important role in degradation, transformation and assimilation of anthropogenic pollutants in aquatic ecosystems. In this study, we assembled a tubular bioreactor containing a biofilm substrate and aeration device, which was introduced into mesocosms to explore the effects of bioreactor on physicochemical and microbial characteristics of a hypereutrophic urban river. The biofilm bioreactor greatly improved water quality, especially by decreasing dissolved inorganic nitrogen (DIN) concentrations, suggesting that biofilms were the major sites of nitrification and denitrification with an oxygen concentration gradient. The biofilm bioreactor increased the abundance of planktonic bacteria, whereas diversity of the planktonic microbial community decreased. Sequencing revealed that Proteobacteria, Bacteroidetes, Planctomycetes, and Actinobacteria were the four predominant phyla in the planktonic microbial community, and the presence of the biofilm bioreactor increased the relative abundance of Proteobacteria. Variations in microbial communities were most strongly affected by the presence of the biofilm bioreactor, as indicated by principal component analysis (PCA) and redundancy analysis (RDA). This study provides valuable insights into changes in ecological characteristics associated with self-purification processes in hypereutrophic urban rivers, and may be of important for the application of biofilm bioreactor in natural urban river.

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Section: Introductionmentioning

confidence: 99%

Influence of a biofilm bioreactor on water quality and microbial communities in a hypereutrophic urban river

Cai

Yao

Sheng

et al. 2019

Environmental Technology

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“…Several studies have indicated that volatilization, plant uptake and nitrification/denitrification are the major mechanisms for nitrogen removal 37,38 . Since the pH of the water of all treatments was between 6.35–8.0 during the experiment, the shift from NH 4 + to NH 3 gas was not significant.…”

Section: Discussionmentioning

confidence: 99%

A novel submerged Rotala rotundifolia, its growth characteristics and remediation potential for eutrophic waters

Xiao

et al. 2019

Sci Rep

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The vegetative growth and remediation potential of Rotala rotundifolia, a novel submerged aquatic plant, for eutrophic waters were investigated on different sediments, and under a range of nitrogen concentrations. Rotala Rotundifolia grew better on silt than on sand and gravel in terms of plant height, tiller number and biomass accumulation. Percent increment of biomass was enhanced at low water nitrogen (ammonium nitrogen concentration ≤10 mg/L). The maximum total nitrogen and total phosphorus removals in the overlying water were between 54% to 66% and 42% to 57%, respectively. Nitrogen contents in the sediments increased with increasing water nitrogen levels, whereas, nitrogen contents in the plant tissues showed no apparent regularity, and the greatest value was obtained at ammonium nitrogen concentration 15 mg/L. Both phosphorus contents in the sediments and tissues of plants were not affected significantly by additional nitrogen supply. Direct nitrogen uptake by plants was in the range of 16% to 39% when total phosphorus concentration was 1.0 mg/L. These results suggested that Rotala Rotundifolia can be used to effectively remove nitrogen and phosphorus in eutrophic waters.

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“…The coverage of FTW over the target water body is also important, as indicated by a metaanalysis showing that vegetation cover is significantly correlated with the removal of NH4 - (Pavlineri et al, 2017). Although increasing FTW coverage reduces atmospheric diffusion, oxygen is supplied to water by emergent plants via root oxygenation (Xiao et al, 2016;Yeh et al, 2015). Furthermore, in eutrophic waters this coverage may inhibit algal primary productivity, which may be beneficial for mitigating the potential for occurrences of large algal blooms (Jones et al, 2017).…”

Section: Floating Treatment Wetlandsmentioning

confidence: 99%

Phytoremediation Using Aquatic Plants

Fletcher

Willby

Oliver

2020

Concepts and Strategies in Plant Sciences

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An Eco-tank system containing microbes and different aquatic plant species for the bioremediation of N,N-dimethylformamide polluted river waters

Cited by 42 publications

References 39 publications

Influence of a biofilm bioreactor on water quality and microbial communities in a hypereutrophic urban river

Influence of a biofilm bioreactor on water quality and microbial communities in a hypereutrophic urban river

A novel submerged Rotala rotundifolia, its growth characteristics and remediation potential for eutrophic waters

Phytoremediation Using Aquatic Plants

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