Rapid determination of dye concentration in wastewater by TiO2-KMnO4 synergistic photocatalytic oxidation system

Autor:	Yiwen Yuan, Yiping Zhang, Hanwei Fang, Anqi Hong, Zhijie Shen
Rok vydání:	2019
Předmět:	Thesaurus (information retrieval) Search engine Chemical substance Chemical engineering Wastewater Chemistry Photocatalysis Science technology and society
Zdroj:	IOP Conference Series: Earth and Environmental Science. 332:022043
ISSN:	1755-1315 1755-1307
DOI:	10.1088/1755-1315/332/2/022043
Popis:	A new method for the determination of dye concentration based on photocatalytic oxidation digestion and spectrophotometry was established by using KMnO4 synergistic TiO2 photocatalytic oxidation and methyl orange solution as simulated dye wastewater. The mechanism of photocatalytic oxidation for the determination of dye concentration was discussed, and the optimal reaction conditions for dye digestion were investigated. The optimal digestion conditions were as follows: solution pH 1.5, TiO2 amount 1.0 g/L, KMnO4 initial concentration 10.0 mmol/L, solution temperature 80°C, ultraviolet light irradiation time 10 min. Compared with potassium dichromate reflux method or potassium permanganate method, the photocatalytic digestion method of TiO2-KMnO4 synergistic system is more rapid, efficient, economical and environmentally friendly, which provides a new idea for the determination of dye concentration in wastewater.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::26eccc0d8556c3277f5e208f52cd7f57 https://doi.org/10.1088/1755-1315/332/2/022043 Zobrazit plný text záznamu