Catalytic reduction for water treatment

Maocong Hu, Yin Liu, Zhenhua Yao, Liping Ma, Xianqin Wang

Research output: Contribution to journalReview article

16 Scopus citations

Abstract

Treating water contaminants via heterogeneously catalyzed reduction reaction is a subject of growing interest due to its good activity and superior selectivity compared to conventional technology, yielding products that are non-toxic or substantially less toxic. This article reviews the application of catalytic reduction as a progressive approach to treat different types of contaminants in water, which covers hydrodehalogenation for wastewater treatment and hydrogenation of nitrate/nitrite for groundwater remediation. For hydrodehalogenation, an overview of the existing treatment technologies is provided with an assessment of the advantages of catalytic reduction over the conventional methodologies. Catalyst design for feasible catalytic reactions is considered with a critical analysis of the pertinent literature. For hydrogenation, hydrogenation of nitrate/nitrite contaminants in water is mainly focused. Several important nitrate reduction catalysts are discussed relating to their preparation method and catalytic performance. In addition, novel approach of catalytic reduction using in situ synthesized H2 evolved from water splitting reaction is illustrated. Finally, the challenges and perspective for the extensive application of catalytic reduction technology in water treatment are discussed. This review provides key information to our community to apply catalytic reduction approach for water treatment.[Figure not available: see fulltext].

Original languageEnglish (US)
Article number3
JournalFrontiers of Environmental Science and Engineering
Volume12
Issue number1
DOIs
StatePublished - Feb 1 2018

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All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

Keywords

  • Groundwater remediation
  • Halogenated compounds
  • Hydrodechloriantion
  • Hydrogenation
  • Nitrate/nitrite contaminants
  • Wastewater treatment

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