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Nitrate reduction by green rusts modified with trace metals

Choi, Jeongyun ; Batchelor, Bill ; Won, Chanhee ; Chung, Jinwook

Chemosphere, February 2012, Vol.86(8), pp.860-5 [Tạp chí có phản biện]

E-ISSN: 1879-1298 ; PMID: 22154340 Version:1 ; DOI: 10.1016/j.chemosphere.2011.11.035

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  • Nhan đề:
    Nitrate reduction by green rusts modified with trace metals
  • Tác giả: Choi, Jeongyun ; Batchelor, Bill ; Won, Chanhee ; Chung, Jinwook
  • Chủ đề: Environmental Pollutants -- Isolation & Purification ; Ferric Compounds -- Chemistry ; Ferrous Compounds -- Chemistry ; Nitrates -- Isolation & Purification ; Platinum -- Chemistry
  • Là 1 phần của: Chemosphere, February 2012, Vol.86(8), pp.860-5
  • Mô tả: A kinetic study of nitrate reduction by green rust (GR), a group of layered Fe(II)-Fe(III) hydroxide solids, was performed using a batch reactor system. The reduction rate of nitrate by GRs was affected by the anion content in the interlayer of GRs. GR containing F(-) (GR-F) showed the fastest reduction rate while GR-SO(4) showed 9 times slower reaction rate than GR-F. The addition of 1mM Pt or Cu to GR that contained 85 mM Fe(II) improved the reduction kinetics of nitrate by up to 200 times. Pt was an effective activating agent for all GRs. The sequential step reaction model that we proposed appropriately simulated the experimental data. The fastest nitrate reduction by GR-F with Pt was achieved at pH 9 among 7.5 to 11. At that condition, 1mM nitrate transformed completely into ammonium within 23 min.
  • Ngôn ngữ: English
  • Số nhận dạng: E-ISSN: 1879-1298 ; PMID: 22154340 Version:1 ; DOI: 10.1016/j.chemosphere.2011.11.035

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