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Title: In situ remediation technologies for mercury-contaminated soil

A pollutant that poses significant risks to humans and the environment is mercury from anthropogenic activities. In soils, mercury remediation can be technically challenging and costly, depending on the subsurface mercury distribution, the types of mercury species, and the regulatory requirements. Our paper introduces the chemistry of mercury and its implications for in situ mercury remediation, which is followed by a detailed discussion of several in situ Hg remediation technologies in terms of applicability, cost, advantages, and disadvantages. The effect of Hg speciation on remediation performance, as well as Hg transformation during different remediation processes, was detailed. Thermal desorption, electrokinetic, and soil flushing/washing treatments are removal technologies that mobilize and capture insoluble Hg species, while containment, solidification/stabilization, and vitrification immobilize Hg by converting it to less soluble forms. We also discussed two emerging technologies, phytoremediation and nanotechnology, in this review.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [2]
  1. Zhejiang Univ. of Technology (China); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Queensland, St. Lucia (Australia)
  4. Zhejiang A&F Univ. (China)
Publication Date:
OSTI Identifier:
1265799
Grant/Contract Number:
AC05-00OR22725; AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Environmental Science and Pollution Research International
Additional Journal Information:
Journal Volume: 22; Journal Issue: 11; Journal ID: ISSN 0944-1344
Publisher:
Springer
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Environmental Management (EM)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES mercury; soil contamination; in situ remediation; immobilization; stabilization