Effect of Ozonation on the biodegradability of atrazine in GAC columns.
The biodegradation of atrazine as influenced by preozonation was studied in biological GAC columns. Metabolism of isopropyl-14C atrazine produced more 14CO2 than ring-UL-14C atrazine, indicating dealkylation was more rapid than ring cleavage. Preozonation increased mineralization of ring-UL-14C atrazine and, consequently, enhanced the performance of GAC columns. Sixty-two percent of the influent atrazine was converted to 14CO2 in columns that received ozonated atrazine and ozonated surface water, while 50% of the influent atrazine was converted to 14CO2 in columns that received untreated atrazine and ozonated surface water, and only 38% of the influent atrazine was converted to 14CO2 in columns with untreated influent.
Department of Civil Engineering, Kansas State University, Manhattan, USA.
C M
CM
Huang
M K
MK
Banks
D000042:Absorption; D000478:Alkylation; D001280:Atrazine / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002250:Carbon Radioisotopes; D002606:Charcoal / Q000737:chemistry*; D006540:Herbicides / Q000378:metabolism*; D007553:Isotope Labeling; D008433:Mathematics; D010126:Ozone / Q000737:chemistry*; D010571:Pest Control; D014481:United States; D014484:United States Environmental Protection Agency
D002250:Carbon Radioisotopes; D006540:Herbicides; D002606:Charcoal; D010126:Ozone; D001280:Atrazine