e-journal

Catalytic wet air oxidation of dye pollutants by polyoxomolybdate nanotubes under room condition

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Abstract.
In order to develop a catalyst with high activity and stability for catalytic wet air oxidation of pollutant
dyes at room condition, a new polyoxometalate Zn1.5PMo12O40 with nanotube structure was prepared
using biological template. The structure and morphology were characterized using infrared (IR) spectra,
UV–vis diffuse reflectance spectra (DR-UV–vis), elemental analyses, X-ray powder diffraction (XRD), and
transmission electron microscopy (TEM). And the degradation of Safranin-T (ST), a hazardous textile dye,
under air at room temperature and atmospheric pressure was studied as amodel experiment to evaluate
the catalytic activity of this polyoxomolybdate catalyst. The results show that the catalyst has an
excellent catalytic activity in treatment of wastewater containing 10 mg/L ST, and 98% of color and 95% of
chemical oxygen demand (COD) can be removed within 40 min. And the organic pollutant of ST was totally mineralized to simple inorganic species such as HCO3- , Cl- and NO3-  during this time (total organic carbon (TOC) decreased 92%). The structure and morphology of the catalyst under different cycling runs show that the catalyst are stable under such operating conditions and the leaching tests show negligible leaching effect owning to the lesser dissolution. So this polyoxomolybdate nanotube is proved to be a heterogeneous catalyst in catalytic wet air oxidation of organic dye.

Keywords: Catalytic wet air oxidation, Safranin-T, Wastewater treatment, Polyoxometalates

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Informasi Detail

Judul Seri

Applied Catalysis B: Environmental

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Applied Catalysis B: Environmental 86 (2009) 182–189

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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