Sources and remediation for mercury contamination in aquatic systems—a literature review

Wang, Qianrui; Kim, Daekeun; Dionysiou, Dionysios D.; Sorial, George A.; Timberlake, Dennis L.

doi:10.1016/j.envpol.2004.01.010

Cited by 656 publications

(321 citation statements)

References 107 publications

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“…Background concentrations in Lake Geneva sediments are B0.2 mg kg À 1 . Although the chemistry and transport behavior of Hg is complex, particulate transport is dominant in most systems (Glass et al, 1990;Wang et al, 2004). Assuming that particleassociated bacteria or bacterial aggregates released from the WWTP are in turn primarily responsible for ARG deposition in the sediment, we expected a similar pollution pattern for THg and ARGs.…”

Section: Comparison Of Args and Hg Contaminationmentioning

confidence: 87%

Wastewater as a point source of antibiotic-resistance genes in the sediment of a freshwater lake

2014

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Antibiotic-resistance genes (ARGs) are currently discussed as emerging environmental contaminants. Hospital and municipal sewage are important sources of ARGs for the receiving freshwater bodies. We investigated the spatial distribution of different ARGs (sul1, sul2, tet(B), tet(M), tet(W) and qnrA) in freshwater lake sediments in the vicinity of a point source of treated wastewater. ARG contamination of Vidy Bay, Lake Geneva, Switzerland was quantified using real-time PCR and compared with total mercury (THg), a frequently particle-bound inorganic contaminant with known natural background levels. Two-dimensional mapping of the investigated contaminants in lake sediments with geostatistical tools revealed total and relative abundance of ARGs in close proximity of the sewage discharge point were up to 200-fold above levels measured at a remote reference site (center of the lake) and decreased exponentially with distance. Similar trends were observed in the spatial distribution of different ARGs, whereas distributions of ARGs and THg were only moderately correlated, indicating differences in the transport and fate of these pollutants or additional sources of ARG contamination. The spatial pattern of ARG contamination and supporting data suggest that deposition of particle-associated wastewater bacteria rather than co-selection by, for example, heavy metals was the main cause of sediment ARG contamination.

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Section: Comparison Of Args and Hg Contaminationmentioning

confidence: 87%

Wastewater as a point source of antibiotic-resistance genes in the sediment of a freshwater lake

2014

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“…Bio sorption is increasingly considered as a potential alternative to adsorb heavy metal ions using materials of biological origin for its low cost of operation, eco-friendly nature, and higher efficiency at low mercury concentrations [39][40][41][42]. Two genetic engineering strategies, by coexpressing proteins (peptides) with an Hg 2+ transport system or by directly expressing proteins on the cell surface, were emerging and receiving more attention [43,44].…”

Section: Discussionmentioning

confidence: 99%

A glutathione S-transferase from Proteus mirabilis involved in heavy metal resistance and its potential application in removal of Hg2+

Zhang

Yin

et al. 2013

Journal of Hazardous Materials

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“…Mercury contamination of surface waters results from atmospheric deposition, erosion, urban discharges, mining activities, combustion and industrial sources (e.g. chlor-alkali industries), and agricultural run-off (Wang et al, 2004). Affected water bodies are usually near urban areas, where increasing amounts of nutrients, mainly N, are released by human activities, and eutrophication is common.…”

Section: Introductionmentioning

confidence: 99%

Physiological responses of Eichhornia crassipes [Mart.] Solms to the combined exposure to excess nutrients and Hg

Caldelas

Iglesia-Turiño

Araus

et al. 2009

Braz. J. Plant Physiol.

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. The accumulation of P and S was reduced by the addition of HgCl 2 , and also the P and K concentrations in emerged and submerged parts respectively decreased. In contrast, the addition of HgCl 2 increased Ca and Mg concentrations in submerged parts. Furthermore, the concentration ratios of submerged/ emerged parts for Ca, Mg and P were also reduced by the addition of HgCl 2 . The interaction of HgCl 2 and KNO 3 was synergistic and decreased F v /F m , total chlorophyll content and P and Mn concentrations in emerged parts. In submerged plant parts Ca concentration increased and K content stabilized as a result of the above interaction. However, the total accumulation of Hg per plant was not reduced, thereby confirming the water hyacinth as a promising candidate for the heavy metal phytoremediation of eutrophic waters.

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Sources and remediation for mercury contamination in aquatic systems—a literature review

Cited by 656 publications

References 107 publications

Wastewater as a point source of antibiotic-resistance genes in the sediment of a freshwater lake

Wastewater as a point source of antibiotic-resistance genes in the sediment of a freshwater lake

A glutathione S-transferase from Proteus mirabilis involved in heavy metal resistance and its potential application in removal of Hg2+

Physiological responses of Eichhornia crassipes [Mart.] Solms to the combined exposure to excess nutrients and Hg

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