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Adsorbable Organic Halogens Generation and Reduction During Degradation of Phenol by UV Radiation/Sodium Hypochlorite
Author(s) -
Zeng Qingfu,
Fu Jie,
Shi Yintao,
Xia Dongsheng,
Zhu Hailiang
Publication year - 2009
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143008x325845
Subject(s) - chemistry , phenol , degradation (telecommunications) , sodium hypochlorite , hypochlorite , halogen , oxygen , chlorine , inorganic chemistry , nuclear chemistry , organic chemistry , telecommunications , alkyl , computer science
The degradation of phenol by UV radiation/sodium hypochlorite (UV/NaClO) was investigated. The degradation processes were analyzed by a UV‐visible spectrometer, total organic carbon analyzer, and gas chromatography‐mass spectroscopy. The experimental results indicate that phenol can be photodegraded by UV/NaClO effectively. However, adsorbable organic halogens (AOX) were produced during the degradation process. Analysis of the mechanism of degradation indicates that the decrease in pH value would increase the formation of AOX. Also, dissolved oxygen greatly increased the rate of phenol degradation and reduced the formation of AOX. Therefore, appropriate conditions could increase degradation and inhibit chlorination. Adjusting the pH value and increasing the amount of oxygen were effective methods.