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Emerging Contaminants and Their Remediation for Sustainable Fisheries and Aquaculture

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Pollution Prevention, Mitigation and Sustainability".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 2045

Special Issue Editors


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Guest Editor
Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
Interests: ecosystem functioning; heavy metals and microplastics pollution; natural remediation and coastal fisheries

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Guest Editor
Institute of Marine Sciences and Fisheries, Chittagong University, Chittagong 4331, Bangladesh
Interests: marine ecology; marine biodiversity; marine environment; ecosystem ecology; coastal ecology; community structure; aquatic ecology; biological oceanography

Special Issue Information

Dear Colleagues,

Emerging contaminants, also known as contaminants of emerging concerns (CECs), are synthetic chemicals or biological agents (e.g., micro/nanoplastics, PAHs, PFAS, microorganisms, etc.) that have recently been recorded in all parts of the Earth's ecosystems. These chemicals are usually not routinely monitored and are mostly persistent and either poorly or non-biodegradable. They stay in the ecosystems for a long time and enter the food chain, which has the potential to harm the environment and have a negative impact on human and/or ecological health. The development of efficient bioremediation strategies and support for international regulatory efforts are constrained by the lack of knowledge regarding the fate of some CECs in aquatic environments and their transfer pathways in the food web. As a result, in order to establish regulatory norms on a worldwide scale, thorough, detailed studies are required. Fisheries and aquaculture play a significant role in livelihoods, poverty reduction, and food security throughout the world. Since the 1990s, aquaculture has grown at an astounding average rate of 8% per year and the current global demand for aquatic food is expected to increase to 204 million tonnes by 2030. These data show how quickly the fisheries and aquaculture industries are expanding or will expand. However, increasing water pollution from emerging contaminants could potentially slow down this development. As a result, the establishment of combined regulatory guidelines, waste management techniques, and remediation strategies is urgently needed for sustainable fisheries and aquaculture growth. In this Special Issue, topics on monitoring, transfer, fate, risk assessment of emerging contaminants in aquatic bodies and their remediation strategies will be covered.

Authors are invited to submit original research papers, reviews and short communications.

Dr. M. Belal Hossain
Dr. Mohammad Nurul Azim Sikder
Guest Editors

Manuscript Submission Information

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Keywords

  • macro and microplastics
  • per- and polyfluoroalkyl substances
  • PAHs
  • ecological and biological impacts
  • toxicity
  • risk assessment
  • biosorption
  • bioremediation
  • activated carbon
  • biochar
  • fisheries and aquaculture

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Published Papers (1 paper)

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Research

13 pages, 1423 KiB  
Article
Contamination and Ecological Risk Evaluation of Metals in Sediments from a Wetland of International Importance (Ramsar Site)
by Md. Moudud Ahmed, As-Ad Ujjaman Nur, Yeasmin N. Jolly, Md. Rakeb Ul Islam, Mohammad Saifur Rahman, Shirin Akter, Jimmy Yu, Mohammed Fahad Albeshr, Takaomi Arai and Mohammad Belal Hossain
Sustainability 2023, 15(10), 7753; https://doi.org/10.3390/su15107753 - 9 May 2023
Cited by 1 | Viewed by 1596
Abstract
Wetlands are highly productive and diverse ecosystems providing home to thousands of organisms. These ecosystems reduce water pollution, sequester carbon, support livelihoods, and increase food security. However, these ecological functions are being impeded due to increased levels of metals in the environment. Therefore, [...] Read more.
Wetlands are highly productive and diverse ecosystems providing home to thousands of organisms. These ecosystems reduce water pollution, sequester carbon, support livelihoods, and increase food security. However, these ecological functions are being impeded due to increased levels of metals in the environment. Therefore, the primary objective of this study was to evaluate the degree of metal contamination in the surface sediment of a wetland, Tanguar Haor, for the first time. The result demonstrated that the mean concentrations of Fe, Cu, Zn, As, Pb and Hg varied from 13140.39 to 45675, 40.07 to 46.29, 47.60 to 57.15, 18.89 to 35.23, 1.24 to 2.64, and 0.35 to 0.42, respectively. The concentration of As was found to be higher than the average shale value. The concentration of Cu (44.19 μg/g) and Hg (0.38 μ/g) was very close to the shale value (45 μg/g and 0.40 μg/g, respectively), indicating a moderate level of contamination. The contamination level was further evaluated by multi-indices, e.g., the contamination factor (CF), the enrichment factor (EF), and the geo-accumulation index (Igeo). The average EF values for As (115.41), Cu (57.68), and Hg (55.47) were >50, indicating a high degree of contamination (extremely severe enrichment). However, CF values showed varied levels of pollution; for example, the majority of the area was only somewhat contaminated with As, Cu, and Hg, but less contaminated with Fe, Zn, and Pb. According to Igeo, sampling sites were found to be unpolluted or less polluted by heavy metals. Based on potential ecological risk assessment (PERI), the degree of risk from the six heavy metals decreased in the following sequence: As > Cu > Zn > Pb > Cr > Ni. PERI values indicated the study area has been exposed to moderate risk to As and low risk to other metals. This study provides an opportunity for frequent monitoring of heavy metals in this ecologically critical environment, and thus curbing heavy metal pollution. Full article
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