naa a22 4500 510819486 CHVBK 20180411083524.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11814-013-0092-x doi (NATIONALLICENCE)springer-10.1007/s11814-013-0092-x Effects of surfactant contamination on oxygen mass transfer in fine bubble aeration process [Elektronische Daten] [Xulu Chen, Guo-hua Liu, Haitao Fan, Meidi Li, Tao Luo, Lu Qi, Hongchen Wang] The effects of anionic, cationic, and non-ionic surfactants (SDS, SDBS, CTAB and Tween20) on oxygen mass transfer (OMT) in fine bubble aeration systems were investigated. The overall gas-liquid volumetric mass transfer coefficient (K L a), specific interfacial area (a), and liquid-side mass transfer coefficient (K L ) parameters were used to assess the influence of the surfactants. At the same concentration, the different surfactants were observed to influence the K L a value as follows: K L a (SDBS)>K L a (SDS)>K L a (tween20)>K L a (CTAB). For all used surfactants, the overall trends showed a significant decrease in the K L a value at low concentrations (0-5mg/L), while the K L a value recovered somewhat at high concentrations (10-20mg/L). The decrease to the KL value was found to be much larger than increase in the a value in the presence of surfactants. Furthermore, a simple model was established that provides an OMT prediction for different surfactants. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Surfactant nationallicence Fine-bubble Aeration nationallicence Mass Transfer nationallicence Interface Coverage Rate nationallicence OMT Prediction Model nationallicence Chen Xulu School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut Liu Guo-hua School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut Fan Haitao School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut Li Meidi School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut Luo Tao School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut Qi Lu School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut Wang Hongchen School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/9(2013-09-01), 1741-1746 0256-1115 30:9<1741 2013 30 11814 https://doi.org/10.1007/s11814-013-0092-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0092-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Xulu School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut NATIONALLICENCE 700 1- Liu Guo-hua School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut NATIONALLICENCE 700 1- Fan Haitao School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut NATIONALLICENCE 700 1- Li Meidi School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut NATIONALLICENCE 700 1- Luo Tao School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut NATIONALLICENCE 700 1- Qi Lu School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut NATIONALLICENCE 700 1- Wang Hongchen School of Environment & Natural Resource, Renmin University of China, 100872, Beijing, China aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/9(2013-09-01), 1741-1746 0256-1115 30:9<1741 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer