文档介绍：Degradation of azo dye Acid Orange 7 by
UV-mon peroxides in seawater system
Liang Shan a, b, Shiying Yang a, b, *, Youyuan Chen a, b Ping Wang a, b, Rui Niu b, Xueting Shao b, Wenyi Zhang
a, b b
a. Key Laboratory of Marine Environment and Ecology, , Xin Yang
Ministry of Education, b. College of Environmental Science and Engineering, Ocean
Qingdao 266100, China University of China,
* corresponding author: shiningpup@ Qingdao 266100, China
Abstract—Seawater substitution is one of the effective routes to Cl⋅+ Cl−−•↔ Cl
2 (4)
alleviate the shortage of water resources, and its high saline
matter can be used in printing and dyeing industry. However, the HSO−−+ Cl → SO2- + HOCl
54 (5)
treatment of the formed dyeing wastewater is difficult for the
high salt. This paper using ultraviolet (UV) light to activate However, in a chloride-rich environment, the
persulfate (PS), hydrogen peroxide (H2O2), Oxone (PMS) to transformation mechanism in the radical-based AOPs is
degrade azo dye Acid orange 7 (AO7) in seawater. Based on the significantly affected because chloride (Cl-) is a kind of radical
results, AO7 was effectively degraded by the three peroxides -•
scavenger, which can react with SO4 and ·OH to produce
under 254 nm UV activation, and even the benzene and chloride radical (Cl·) ((1) to (3)) [8, 9]. On the other hand, the
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