publication . Article . 2017

PHOTOCATALYTIC REMOVAL OF TR I- AND HEXA-VALENT CHROMIUM IONS FROM CHROME-ELECTROPL ATING WASTEWATER

Puangrat Kajitvichyanukul; Chulaluck Changul;
Open Access English
  • Published: 01 Nov 2017 Journal: ASEAN Journal on Science and Technology for Development, volume 22, issue 4, pages 355-362 (issn: 0217-5460, eissn: 2224-9028, Copyright policy)
  • Publisher: Universitas Gadjah Mada
Abstract
<jats:p>A novel technique based on photocatalysis was applied to eliminate chromium ions, a toxic hazardous environmental pollutant. The photoreduction of each species of chromium (total, hexavalent, and trivalent chromiums) from chrome-electroplating wastewater was investigated using a titanium dioxide suspension under irradiation by a low-pressure mercury lamp. The initial concentration of total chromium was 300 mg/l. The applied conditions were the direct photocatalytic reduction process at pH 3.65 and the indirect photocatalytic reduction with added hole scavengers at the same solution pH. Results from both processes were comparatively discussed. Result show...
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Subjects
Medical Subject Headings: technology, industry, and agricultureinorganic chemicalsotorhinolaryngologic diseases
free text keywords: lcsh:Technology (General), lcsh:T1-995, lcsh:Science (General), lcsh:Q1-390
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