TY - JOUR
T1 - Enhanced free-radical generation by shrinking microbubbles using a copper catalyst
AU - Li, Pan
AU - Takahashi, Masayoshi
AU - Chiba, Kaneo
N1 - Funding Information:
This study was partly supported by Grants from National Institute of Advanced Industrial Science and Technology of Japan.
PY - 2009/11
Y1 - 2009/11
N2 - Free-radicals are generated by collapsing microbubbles in aqueous solutions; however, the concentration is too low to be of practical use. In this study, copper was found to enhance the generation of hydroxyl radicals from collapsing oxygen microbubbles under acidic conditions through electron-spin-resonance spectroscopy analysis. Moreover, the degradation of polyvinyl alcohol, which is not decomposed even by ozone, was also observed during the collapse of the air microbubbles. These findings greatly increase the potential of the microbubble-collapse technique for use in the field of wastewater treatment.
AB - Free-radicals are generated by collapsing microbubbles in aqueous solutions; however, the concentration is too low to be of practical use. In this study, copper was found to enhance the generation of hydroxyl radicals from collapsing oxygen microbubbles under acidic conditions through electron-spin-resonance spectroscopy analysis. Moreover, the degradation of polyvinyl alcohol, which is not decomposed even by ozone, was also observed during the collapse of the air microbubbles. These findings greatly increase the potential of the microbubble-collapse technique for use in the field of wastewater treatment.
KW - Copper catalyst
KW - Free-radical
KW - Microbubble
KW - Shrinkage
KW - Wastewater treatment
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U2 - 10.1016/j.chemosphere.2009.07.062
DO - 10.1016/j.chemosphere.2009.07.062
M3 - Article
C2 - 19781738
AN - SCOPUS:71249083881
SN - 0045-6535
VL - 77
SP - 1157
EP - 1160
JO - Chemosphere
JF - Chemosphere
IS - 8
ER -