Modeling of experimental treatment of acetaldehyde-laden air and phenol-containing water using corona discharge technique.
Acetaldehyde-laden air and phenol-contaminated water were experimentally treated using corona discharge reactions and gas absorption in a single water-film column. Mathematical modeling of the combined treatment was developed in this work. Efficient removal of the gaseous acetaldehyde was achieved while the corona discharge reactions produced short-lived species such as O and O- as well as ozone. Direct contact of the radicals and ions with water was known to produce aqueous OH radical, which contributes to the decomposition of organic contaminants: phenol, absorbed acetaldehyde, and intermediate byproducts in the water. The influence of initial phenol concentration ranging from 15 to 50 mg L(-1) and that of influent acetaldehyde ranging from 0 to 200 ppm were experimentally investigated and used to build the math model. The maximum energetic efficiency of TOC, phenol, and acetaldehyde were obtained at 25.6 x 10(-9) mol carbon J(-1), 25.0 x 10(-9) mol phenol J(-1), and 2.0 x 10(-9) mol acetaldehyde J(-1), respectively. The predictions for the decomposition of acetaldehyde, phenol, and their intermediates were found to be in good agreement with the experimental results.
Faungnawakij
Kajornsak
K
Center of Excellence in Particle Technology, Department of Chemical Engineering, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand.,
Sano
Noriaki
N
Charinpanitkul
Tawatchai
T
Tanthapanichakoon
Wiwut
W
D000079:Acetaldehyde / Q000737:chemistry*; D000388:Air; D007700:Kinetics; D019800:Phenol / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
D014867:Water; D019800:Phenol; D000079:Acetaldehyde