Metal contaminant oxidation mediated by manganese redox cycling in subsurface environment

  • Zimeng Wang
  • , Daniel E. Giammar

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

32 Scopus citations

Abstract

Mn oxides can oxidize a variety of metal contaminants in subsurface environments. Fundamental knowledge of the rates, mechanisms, and products of these oxidation reactions is critical to predicting the environmental fate and transport of these metals. This chapter reviews recent advances in characterizing the kinetics and molecular-scale mechanisms of metal oxidation by oxidized forms of Mn. Topics addressed include the dynamics of Mn oxide surface passivation, the mechanisms of solid-solid interactions, the potential importance of soluble Mn(III) species, and the catalytic role of Mn in some linked biotic-abiotic processes that result in metal oxidation. This review highlights the complexity of the coupling of the biogeochemical cycles of Mn and other elements. The Mn species responsible for contaminant metal oxidation goes beyond Mn oxides to also include reactive intermediate species. The chapter identifies future research that is needed to unravel the underlying mechanisms on a process level. Continuing research on metal oxidation by Mn oxides will support improved predictions of metal transport in the environment and aid in decision-making for treatment and remediation.

Original languageEnglish
Title of host publicationAdvances in the Environmental Biogeochemistry of Manganese Oxides
EditorsWei Li, Xionghan Feng, Donald L. Sparks, Mengqiang Zhu
PublisherAmerican Chemical Society
Pages29-50
Number of pages22
DOIs
StatePublished - 2015

Publication series

NameACS Symposium Series
Volume1197
ISSN (Print)0097-6156
ISSN (Electronic)1947-5918

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