Enhancement of Rhodamine B removal by low-cost fly ash sorption with Fenton pre-oxidation
作者： Shih-Hsien Chang , Kai-Sung Wang , Heng-Ching Li , Ming-Yen Wey , Jing-Dong Chou
DOI: 10.1016/J.JHAZMAT.2009.07.106
关键词:
摘要: Abstract The removal of a basic dye, Rhodamine B (RhB), by fly ash adsorption, Fenton oxidation, and combined oxidation-fly adsorption were evaluated. Even though is low cost absorbent, high dose was needed to remove RhB. Only 54% RhB removed 80 g L−1 ash. Solution pH did not significantly affect the sorption after 8 h. reagents at H2O2 6 × 10−3 M 3 rapidly decolorized 97% within 2 min, 72% COD obtained 30 min reaction time. Spectrum analysis result showed that large area UV spectrum 200–400 nm remained reaction. addition 1 g L−1 effectively from Fenton-treated solution, absorption 220–400 nm totally vanished 2 h. oxidation process 98%. capacity for solution 41.6 times higher than untreated solution. results indicated potential technique removal.
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