Abstract：
:This paper describes the use of photo-fenton process for color removal from textile wastewater stream. The wastewater sample to be treated was simulated by using colorless polyvinyl alcohol (PVA) and reactive dyestuff of R94H. As a result, the hydroxyl radical (HO*) oxidation can effectively remove color, but the chemical oxygen demand (COD) was removed in a slight degree. The color removal is markedly related with the amount of HO* formed. The optimum pH for both the OH* formation and color removal occurs at pH 3-5. Up to 96% of color can be removed within 30 min under the studied conditions. Due to the photoreduction of ferric ion into ferrous ion, color resurgence was observed after 30 min. The ferrous dosage and UV power affect the color removal in a positive way, however, the marginal benefit is less significant in the higher range of both. PVA as the major background COD of a textile wastewater stream inhibits the color removal insignificantly as its concentration increases.
journal_name
Chemospherejournal_title
Chemosphereauthors
Kang SF,Liao CH,Po STdoi
10.1016/s0045-6535(99)00524-xsubject
Has Abstractpub_date
2000-10-01 00:00:00pages
1287-94issue
8eissn
0045-6535issn
1879-1298pii
S0045-6535(99)00524-Xjournal_volume
41pub_type
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