TY - JOUR
T1 - Remediation of mercury contaminated soil, water, and air
T2 - A review of emerging materials and innovative technologies
AU - Wang, Liuwei
AU - Hou, Deyi
AU - Cao, Yining
AU - Ok, Yong Sik
AU - Tack, Filip M.G.
AU - Rinklebe, Jörg
AU - O'Connor, David
N1 - Publisher Copyright:
© 2019 The Authors
PY - 2020/1
Y1 - 2020/1
N2 - Mercury contamination in soil, water and air is associated with potential toxicity to humans and ecosystems. Industrial activities such as coal combustion have led to increased mercury (Hg) concentrations in different environmental media. This review critically evaluates recent developments in technological approaches for the remediation of Hg contaminated soil, water and air, with a focus on emerging materials and innovative technologies. Extensive research on various nanomaterials, such as carbon nanotubes (CNTs), nanosheets and magnetic nanocomposites, for mercury removal are investigated. This paper also examines other emerging materials and their characteristics, including graphene, biochar, metal organic frameworks (MOFs), covalent organic frameworks (COFs), layered double hydroxides (LDHs) as well as other materials such as clay minerals and manganese oxides. Based on approaches including adsorption/desorption, oxidation/reduction and stabilization/containment, the performances of innovative technologies with the aid of these materials were examined. In addition, technologies involving organisms, such as phytoremediation, algae-based mercury removal, microbial reduction and constructed wetlands, were also reviewed, and the role of organisms, especially microorganisms, in these techniques are illustrated.
AB - Mercury contamination in soil, water and air is associated with potential toxicity to humans and ecosystems. Industrial activities such as coal combustion have led to increased mercury (Hg) concentrations in different environmental media. This review critically evaluates recent developments in technological approaches for the remediation of Hg contaminated soil, water and air, with a focus on emerging materials and innovative technologies. Extensive research on various nanomaterials, such as carbon nanotubes (CNTs), nanosheets and magnetic nanocomposites, for mercury removal are investigated. This paper also examines other emerging materials and their characteristics, including graphene, biochar, metal organic frameworks (MOFs), covalent organic frameworks (COFs), layered double hydroxides (LDHs) as well as other materials such as clay minerals and manganese oxides. Based on approaches including adsorption/desorption, oxidation/reduction and stabilization/containment, the performances of innovative technologies with the aid of these materials were examined. In addition, technologies involving organisms, such as phytoremediation, algae-based mercury removal, microbial reduction and constructed wetlands, were also reviewed, and the role of organisms, especially microorganisms, in these techniques are illustrated.
KW - Elemental mercury
KW - Hg(II)
KW - Methylmercury
KW - Novel materials
KW - Remediation techniques
UR - http://www.scopus.com/inward/record.url?scp=85074699396&partnerID=8YFLogxK
U2 - 10.1016/j.envint.2019.105281
DO - 10.1016/j.envint.2019.105281
M3 - Review article
C2 - 31726360
AN - SCOPUS:85074699396
SN - 0160-4120
VL - 134
JO - Environment international
JF - Environment international
M1 - 105281
ER -