Heterotrophic nitrification-aerobic denitrification characteristics and zinc-containing wastewater treatment potential of pseudomonas hunanensis SK-4: screening, application, and mechanistic insights.

Yuhong Zhang, Jiacheng Cai, Jiabao Wang, Yueqing Jiang

Abstract read

In one paragraph

Article in Biodegradation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

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1 citing paper in PubMed.

Isolation and characterization of a potential heterotrophic nitrifying-aerobic denitrifying and phosphorus-accumulating bacteriumWater science and technology : a journal of the International Association on Water Pollution Research · 2026
Article

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5 · Who and what money

Authors and funding

4 authors.

Yuhong Zhang *College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China. zhangyhhit@163.com.

Jiacheng Cai *College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China.

Jiabao WangCollege of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China.

Yueqing JiangCollege of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China.

Funding

General Project of Education Department of Liaoning Province LJKZ0471Project of Applied Basic Research Program of Liaoning Province 2023JH2/101300047

6 · The paper itself

Abstract

To alleviate the detrimental impacts of zinc-containing wastewater on biological nitrogen removal systems, Pseudomonas hunanensis SK-4 was isolated and screened from a heavy industrial wastewater treatment facility. The efficient heterotrophic nitrification aerobic denitrification ability of Pseudomonas hunanensis was confirmed for the first time. The maximum removal efficiencies achieved by strain SK-4 for ammonium (100 mg/L), nitrate (100 mg/L), and nitrite (50 mg/L) were 99.81%, 82.31%, and 96.10%, respectively. Under the conditions of C/N 10, 35 °C, pH 7, 140 rpm, inoculum size 3%, with sodium citrate utilized as the carbon source, NH₄⁺-N was effectively removed. The nitrogen removal mechanisms employed by strain SK-4 were revealed through detailed whole-genome sequencing analysis. The nitrification and denitrification efficiencies of strain SK-4 were not affected under 100 mg/L Zn(II) stress. The inhibitory effects of varying Zn(II) concentrations on the nitrogen removal efficiency of strain SK-4 were predicted through model fitting. Such results showed that strain SK-4 had strong tolerance to Zn(II). The complete metabolic mechanisms of tolerance, transport, regulation and detoxification of Zn(II) in strain SK-4 were elucidated. Such findings indicated that strain SK-4 has a strong potential for the treatment of Zn(II) and nitrogen composite pollutants.

Indexed as

NitrificationPseudomonasWastewaterWater Pollutants, ChemicalZincAerobiosisBiodegradation, EnvironmentalDenitrificationHeterotrophic ProcessesNitrogenNitrogenWastewaterWater Pollutants, ChemicalZincBiological denitrificationComposite pollutantsHeavy metal ionsNitrogen metabolism pathwaysWater treatmentZn(II) detoxification

Identifiers

PMID40694303

DOI10.1016/j.biortech.2021.125620

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