Heavy Metal Pollution in Coastal Environment and Its Remediation Using Mangroves

Singh, Jitendra; Yadav, Amit K.; Gupta, Shalini; Verma, Reeta

doi:10.1002/9781119692621.ch11

Cited by 2 publications

(2 citation statements)

References 120 publications

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“…Fungi, exploiting enzymes, organic acids, and metabolites are able to biodegrade complex organic contaminants, but they can also bioaccumulate and immobilise PTEs [23][24][25]. However, as mentioned above, not a lot of studies show deepened removal techniques of PTEs from port waters by biological methods, and the consequent maintenance of a good standard quality of the seawater over time [26][27][28][29] also reduces the amount of hazardous waste to be disposed of in landfills. Concerning metals, in fact, most studies were carried out on marine sediments bioremediation [29][30][31] because sediments often tend to accumulate high levels of PTEs, despite many metal ions passing in aqueous solution at the sediment-water interface [32].…”

Section: Introductionmentioning

confidence: 99%

Myco-Barriers as Sustainable Tool for Port Seawater Decontamination from Metals

Cecchi

Cutroneo

Piazza

et al. 2023

JMSE

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Several inputs of metal contamination can affect port seawater, such as industries and sludges. Despite the urge of developing new techniques to face this problem, most of the studies focus on traditional methods of remediation. Bioremediation by fungi represents an innovative and sustainable tool to efficiently remove metals from seawaters. The study’s aim is to develop a new green technology using fungi (myco-barriers) to maintain a good standard for water quality in port areas. A large commercial port (Port of Genoa) and a small marina (Port of Cavo) in Italy were chosen as pilot sites. Myco-barriers were realised by inoculating sterile straw and sawdust with mycelium of macro- and microfungi. After the incubation, myco-barriers were placed in the ports and sampled after 15 and 30 days to verify metal bioaccumulation. Myco-barriers with macrofungi showed the tendency to bioaccumulate more efficiently after 15 treatment days (Zn 7.0 mg kg−1, Cu 6.5 mg kg−1, Pb 1.2 mg kg−1), while myco-barriers with microfungi showed higher bioaccumulation after 30 days (Ni 0.6 mg kg−1, Pb 0.6 mg kg−1, Cu 5 mg kg−1). Results showed that myco-barriers have metal bioaccumulation potential and can represent a significant alternative to traditional techniques of remediation (chemical–physical).

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Section: Introductionmentioning

confidence: 99%

Myco-Barriers as Sustainable Tool for Port Seawater Decontamination from Metals

Cecchi

Cutroneo

Piazza

et al. 2023

JMSE

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“…With rapid industrialization and urbanization, heavy metal pollution has become one of the most prominent problems in the ecological environment of Mangrove ecosystems, which are found along the estuarine shores in tropical and subtropical regions [1,2]. The complex physical and chemical processes result in heavy metals transportation and deposition in the sediments of the Mangrove environment [3,4].…”

Section: Introductionmentioning

confidence: 99%

Geochemical Speciation, Risk Assessment, and Sources Identification of Heavy Metals in Mangrove Surface Sediments from the Nanliu River Estuary of the Beibu Gulf, China

Chen

Cai

et al. 2022

Sustainability

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To better understand heavy metal pollution and the potential ecological risk of mangrove sediments in the Nanliu River estuary, the speciation and distribution characteristics of heavy metals Fe, Mn, Zn, Co, Ni, Cd, Cr, Cu, and Pb in 13 surface sediments in the study area were determined and analyzed using a modified four-step BCR extraction method, and the ecological risk of heavy metals was assessed using the Geo-accumulation Index (Igeo), Potential Ecological Risk Index (RI), Risk Assessment Code (RAC), Pollution Load Index (PLI), Individual contamination factors (ICF) and Global contamination factor (GCF) methods, and source analyses were performed using correlation analysis and cluster analysis. The results showed that the heavy metal was in the order of Fe > Mn > Cu > Zn > Cr > Pb > Co > Ni > Cd. Except for Fe, Zn, Ni, Cr, Pb, and Co, the average heavy metal content of Mn, Cd, and Cu all exceeded the environmental background value; the Fe, Zn, Co, Ni, Cr, Cu, and Pd are mainly in the residual speciation, while Mn and Cd are mainly weak acid extraction and oxidation, respectively, both of which are predominantly in unstable speciation and are easily released into the environment. Mn and Cd pose a substantial ecological risk, while Cu and Pb present a moderate risk and require precaution. The source analysis results indicate that Fe, Mn, Zn, Ni, Cr, and Pb are most likely to originate from natural sources and the transportation industry, Co and Cu are likely to be mainly from ship manufacturing industrial activities, and Cd is likely to be mainly from agriculture and aquaculture. The GCF and PLI results show that places with high heavy metal enrichment and ecological risk are primarily located in areas with high industrial, agricultural, or human activity impacts.

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Heavy Metal Pollution in Coastal Environment and Its Remediation Using Mangroves

Cited by 2 publications

References 120 publications

Myco-Barriers as Sustainable Tool for Port Seawater Decontamination from Metals

Myco-Barriers as Sustainable Tool for Port Seawater Decontamination from Metals

Geochemical Speciation, Risk Assessment, and Sources Identification of Heavy Metals in Mangrove Surface Sediments from the Nanliu River Estuary of the Beibu Gulf, China

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