OZONATION OF ORGANIC REFRACTORY COMPOUNDS IN WATER IN COMBINATION WITH UV RADIATION

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

KIYOSHI IKEMIZU¹  SHIGEHARU MOROOKA¹  MASAHIKO SAGIIKE¹  YASUO KATO¹  MASAFUMI ORITA¹ 

[1]Department of Applied Chemistry, Kyushu University

关键词: Environment;    Chemical Reaction;    Ozone;    Ultraviolet Decomposition;    Ozonation;    Water Treatment;    Pollutant;   

DOI  :  10.1252/jcej.20.369

来源: Maruzen Company Ltd

【 摘 要 】

References(19)Cited-By(10)The ozonation rates of organic refractory compounds such as aliphatic carboxylic acids and alcohols were determined in water at 293 K. The experiment was carried out by recirculating a solution between an ozone absorption column and a rectangular ozone/UV reactor, and the time-dependent changes in concentration of organic substances were directly measured. In the presence of UV radiation of about 30W•m-2, the initial ozonation rate of organic substances was increased by 10-104 times. The total organic carbon was effectively decreased in the presence of UV radiation. This was explained by the destruction of acetic and oxalic acid by HO radicals which were produced in the ozone/UV system. The ozone/UV oxidation rate of acetic and oxalic acid was roughly proportional to the degree of dissociation.

【 授权许可】

Unknown