[Degradation of Organic Sunscreens 2-hydroxy-4-methoxybenzophenone by UV/ H2O2 Process: Kinetics and Factors].
Huan Jing Ke Xue
; 36(6): 2129-37, 2015 Jun.
Article
en Zh
| MEDLINE
| ID: mdl-26387317
ABSTRACT
Organic sunscreens continue to enter the environment through people's daily consumption, and become a kind of emerging contaminants. The photochemical degradation of benzophenone-3 (BP-3) in water by UV/H2O2 process was investigated. Several factors, including the initial BP-3 concentration, H2O2 concentration, UV light intensity, coexisting cations and anions, humic acid and tert-butyl alcohol, were also discussed. The results showed that BP-3 degradation rate constant decreased with increasing initial BP-3 concentration, while increased with increasing H2O2 dosage and UV intensity. Coexisting anions could reduce the degradation rate, while coexisting ferric ions could stimulate the production of OH through Fenton-like reaction, further significantly accelerated BP-3 degradation process. The BP-3 degradation would be inhibited by humic acid or tert-butyl alcohol. The electrical energy per order (E(Eo)) values were also calculated to evaluate the cost of BP-3 degradation by UV/H2O2 process. The addition of ferric ions significantly reduced the value of E(Eo). The investigation of processing parameter could provide a reference for the practical engineering applications of benzophenone compounds removal by UV/H2O2 process.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Protectores Solares
/
Rayos Ultravioleta
/
Benzofenonas
/
Peróxido de Hidrógeno
Idioma:
Zh
Revista:
Huan Jing Ke Xue
Año:
2015
Tipo del documento:
Article
Pais de publicación:
CHINA
/
CN
/
REPUBLIC OF CHINA