Mitigating marine hazardous contaminants: A sustainable management perspective

Marine hazardous contaminants, such as cadmium (Cd) and lead (Pb), pose significant risks to both human health and aquatic organisms. Traditional methods may not remove contaminants to safe levels, leading to the release of hazardous materials into marine environments. This research proposes polymer...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2023-10, Vol.338, p.139292-139292, Article 139292
Main Authors: Unar, Ahsanullah, Sarfraz, Muddassar, Ajarem, Jamaan S., Allam, Ahmed A., Bhatti, Urooj, Chanihoon, Ghulam Qadir, Afridi, Hassan Imran
Format: Article
Language:English
Subjects:
Bioaccumulation
Cadmium
Environmental regulations
Freshwater fish
Hazardous quotient
Lead
Management
Polymeric membrane bioreactors
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Summary:Marine hazardous contaminants, such as cadmium (Cd) and lead (Pb), pose significant risks to both human health and aquatic organisms. Traditional methods may not remove contaminants to safe levels, leading to the release of hazardous materials into marine environments. This research proposes polymeric membrane bioreactors as a potential solution to this problem. We determined Cd and Pb levels in three freshwater fish species (Rita, Ompok bimaculatus, and Heteropneustes fossils) from two distinctive regions (Zone 1 and Zone 2). Additionally, Cd and Pb concentrations in feeding materials, water, and sediments were analyzed to estimate daily intake and potential hazardous effects of these contaminants on the fish species. These findings underscore the need for effective regulatory measures and policies to reduce the discharge of hazardous contaminants into freshwater and marine environments, protecting both human health and the environment. Implementing polymeric membrane bioreactors in wastewater treatment and industrial facilities could mitigate the risks associated with consuming contaminated fish species. Significantly, the Cd and Pb levels in all three fish species from both fishponds exceeded the Food and Agriculture Organization's (FAO) maximum permissible limits. These findings carry important implications for policymakers, regulators, and industries, urging them to act appropriately to ensure the safety of the environment and public health. This study suggests that polymeric membrane bioreactors are a promising technological approach to address marine contamination, emphasizing their potential role in safeguarding human health and aquatic ecosystems. [Display omitted] •Polymeric membrane bio-reactors reduce hazardous contaminants in marine environments.•Cd and Pb levels in freshwater fish highlight potential health risks.•Feeding materials and sediments contribute to bioaccumulation of toxic metals.•Regulations needed to control release of hazardous contaminants into environment.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2023.139292