Remediation of mercury contaminated soil, water, and air: A review of emerging materials and innovative technologies

Wang, Liuwei; Hou, Deyi; Cao, Yining; Ok, Yong Sik; Tack, Filip; Rinklebe, Jörg; O’Connor, David

doi:10.1016/j.envint.2019.105281

Cited by 255 publications

(107 citation statements)

References 257 publications

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“…Soil contaminants include heavy metals, such as cadmium (Cd), copper (Cu), lead (Pb), mercury (Hg) and zinc (Zn), and organic pollutants, such as pesticides and polycyclic aromatic hydrocarbons (PAHs). As an emerging contaminant, microplastics in the soil environment have also drawn attention in recent years (Bradney et al, 2019;Jia et al, 2020;O'Connor et al, 2020;Wang et al, 2020a). Assessment of their fate and transport is critical for understanding the environmental risk (Corradini et al, 2019;Wang et al, 2019a).…”

Section: Soil Pollutionmentioning

confidence: 99%

Sustainable soil use and management: An interdisciplinary and systematic approach

Hou

Bolan

Tsang

et al. 2020

Science of The Total Environment

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155

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Soil degradation impedes achieving the United Nations' Sustainable Development Goals. • Soil plays a fundamental role for biodiversity conservation. • Soil researchers ought to prioritize the multifunctional value of soil health. • A framework for interdisciplinary research in soil sustainability is presented. • Information management and knowledge sharing may drive sustainable behavior change.

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Section: Soil Pollutionmentioning

confidence: 99%

Sustainable soil use and management: An interdisciplinary and systematic approach

Hou

Bolan

Tsang

et al. 2020

Science of The Total Environment

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155

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“…Regarding emerging technologies, recent reviews point out nanotechnologies and the use of synthetic materials for Hg adsorption-innovative materials developed to enhance selected parameters including surface area and porosity [101]. This technology, depending on the material selection, can be applied for heavy metals removal from water, soil, and air; many studies reporting high adsorption values [101,102]. Another promising removal method seems to be phytoremediation of Hg from contaminated soils (via for instance, Brassica juncea (Indian mustard), Jatropha curcas, Polypogon monspeliensis (beard grass) [100]).…”

Section: Remediation Responsesmentioning

confidence: 99%

Mercury (Hg) Contaminated Sites in Kazakhstan: Review of Current Cases and Site Remediation Responses

Güney

Akimzhanova

Kumisbek

et al. 2020

IJERPH

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Mercury (Hg) emissions from anthropogenic sources pose a global problem. In Central Asia, Kazakhstan’s central and northern regions are among the most severely Hg-contaminated territories. This is due to two former acetaldehyde (in Temirtau) and chlor-alkali (in Pavlodar) plants, discharges from which during the second half of the 20th century were estimated over 2000 tons of elemental Hg. However, the exact quantities of Hg released through atmospheric emissions to the environment, controlled discharges to the nearby aquatic systems, leakages in the cell plant, and contaminated sludge are still unknown. The present review is the initiation of a comprehensive field investigation study on the current state of these contaminated sites. It aims to provide a critical review of published literature on Hg in soils, sediments, water, and biota of the impacted ecosystems (Nura and Irtysh rivers, and Lake Balkyldak and their surrounding areas). It furthermore compares these contamination episodes with selected similar international cases as well as reviews and recommends demercuration efforts. The findings indicate that the contamination around the acetaldehyde plant site was significant and mainly localized with the majority of Hg deposited in topsoils and riverbanks within 25 km from the discharge point. In the chlor-alkali plant site, Lake Balkyldak in North Kazakhstan is the most seriously contaminated receptor. The local population of both regions might still be exposed to Hg due to fish consumption illegally caught from local rivers and reservoirs. Since the present field data is limited mainly to investigations conducted before 2010 and given the persisting contamination and nature of Hg, a recent up-to-date environmental assessment for both sites is highly needed, particularly around formerly detected hotspots. Due to incomplete site remediation efforts, recommendations given by several researchers for the territories of the former chlor-alkali and acetaldehyde plant site include ex-situ soil washing, soil pulping with gravitational separation, ultrasound and transgenic algae for sediments, and electrokinetic recovery for the former and removal and/or confinement of contaminated silt deposits and soils for the latter. However, their efficiency first needs to be validated. Findings and lessons from these sites will be useful not only on the local scale but also are valuable resources for the assessment and management of similar contaminated sites around the globe.

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“…The chelation contributes to an easy migration of heavy metal ions from the surface of the FeO@SiO 2 -DNA to an aqueous solution. 72 In the case of NaOH, a strong base promotes an electrostatic interaction between the -OH groups and the cationic nature of the metal ion. The -OH groups displace the metal ions from the surface of the FeO@SiO 2 -DNA, as well as the Na cations weaken the electrostatic interaction.…”

Section: Adsorption Efficiency Kinetics and Desorptionmentioning

confidence: 99%

Synthesis of FeO@SiO₂–DNA core–shell engineered nanostructures for rapid adsorption of heavy metals in aqueous solutions

et al. 2020

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Remediation of mercury contaminated soil, water, and air: A review of emerging materials and innovative technologies

Cited by 255 publications

References 257 publications

Sustainable soil use and management: An interdisciplinary and systematic approach

Sustainable soil use and management: An interdisciplinary and systematic approach

Mercury (Hg) Contaminated Sites in Kazakhstan: Review of Current Cases and Site Remediation Responses

Synthesis of FeO@SiO₂–DNA core–shell engineered nanostructures for rapid adsorption of heavy metals in aqueous solutions

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Remediation of mercury contaminated soil, water, and air: A review of emerging materials and innovative technologies

Cited by 255 publications

References 257 publications

Sustainable soil use and management: An interdisciplinary and systematic approach

Sustainable soil use and management: An interdisciplinary and systematic approach

Mercury (Hg) Contaminated Sites in Kazakhstan: Review of Current Cases and Site Remediation Responses

Synthesis of FeO@SiO2–DNA core–shell engineered nanostructures for rapid adsorption of heavy metals in aqueous solutions

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Synthesis of FeO@SiO₂–DNA core–shell engineered nanostructures for rapid adsorption of heavy metals in aqueous solutions