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Cited by 29Heavy Metal Pollution RemediationAdsorption and biosorption for pollutant removalChromium effects and bioremediation

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Synergistic effects of indigenous bacterial consortia on heavy metal tolerance and reduction

Khidr, Rahel, Qurbani, Karzan, Muhammed, Vania, Salim, Sazgar, Abdulla, Shajwan, Wsw, Hevy·2025·Environmental Geochemistry and Health
DOI 10.1007/s10653-025-02392-1
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Abstract

Heavy metal contamination represents a critical environmental and public health challenge, necessitating effective remediation approaches. This study examines the bioremediation potential of three indigenous bacterial strains Aeromonas caviae KQ_21, Aeromonas hydrophila AUoR_24, and Shewanella putrefaciens SUoR_24 evaluated both individually and in consortia for their capacity to remove heavy metals. Tolerance assessments demonstrated that the coculture of these strains exhibited superior resistance to copper (Cu), zinc (Zn), and nickel (Ni), with optimal growth observed up to 6 mM for Cu, 9 mM for Zn, and 5 mM for Ni, outperforming the monocultures. The co-culture system also achieved higher metal reduction efficiencies, with reductions of 47.02% for Cu, 61.49% for Ni, and 61.93% for Zn, in contrast to lower reductions observed in individual strains. The study further explored the impact of environmental conditions on bioremediation efficiency. Optimal temperature for both monoculture and coculture setups was found to be 30 °C. pH and salt concentration variations significantly affected bacterial growth and metal reduction, highlighting the necessity of tailored conditions for enhanced bioremediation. In terms of metal removal mechanisms, the results demonstrated that nickel (Ni) removal occurred primarily through bioaccumulation, while copper (Cu) removal involved both biosorption and bioaccumulation. Zinc (Zn) removal was facilitated through biosorption, bioaccumulation, a…

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Metadata

Authors
Khidr, R., Qurbani, K., Muhammed, V., Salim, S., Abdulla, S., & Wsw, H.
Affiliations
University of Raparin (IQ)
Corresponding author
Qurbani, Karzan
ORCID
Qurbani, Karzan
Venue
Environmental Geochemistry and Health
Publisher
Springer Science and Business Media LLC
Published
2025-02-18
Volume
47
Issue
3
Pages
79-79
ISSN
  • 0269-4042 (ISSN-L)
  • 1573-2983
DOI
10.1007/s10653-025-02392-1
OpenAlex
W4407688379
Cited by
29
References
0
Citations by year
2026: 18 · 2025: 11
FWCI
7.33
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Environmental Geochemistry and Health (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chromium effects and bioremediation
Keywords
heavy metal bioremediation, bacterial consortium, Aeromonas caviae, Aeromonas hydrophila, Shewanella putrefaciens, heavy metal tolerance, metal reduction, copper removal, zinc removal, nickel removal, biosorption, bioaccumulation, biotransformation, temperature effects, pH effect, salinity effects, indigenous bacteria
MeSH terms
Aeromonas, Biodegradation, Environmental, Hydrogen-Ion Concentration, Coculture Techniques, Metals, Heavy, Shewanella putrefaciens, Microbial Consortia

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