Articles online

Emissions of Organic Compounds in Surfactant Solutions under Air Turbulence

Category: Articles

Volume: 12 | Issue: 4 | Pages: 526-535
DOI: 10.4209/aaqr.2011.10.0176
PDF | RIS | BibTeX

Huan-Ping Chao

  • Department of Bioenvironmental Engineering, Chung Yuan Christian University, Chung-Li, 32023, Taiwan


The objective of this study was to investigate the effects of surfactants aggregating the gas-liquid interface on the volatilization rates of the organic compounds. The changes in the overall mass transfer coefficient (KOL) and concentration at gas-liquid interface of organic compounds in surfactant (dodecylbenzene sulfonic acid sodium, DBS) solutions under wind speed conditions were used to elucidate the results. The studied compounds consisted of aromatic compounds, benzene, toluene, ethylbenzene, m-dichlorobenzene, and propylbenzene with relatively higher Henry’s law constants (H) and water solubilities (Sw), and chlorinated pesticides, α-endosulfan, heptachlor epoxide, endrin, and dieldrin, with relatively lower H and Sw. Various surfactant concentrations, from 0 to 1000 mg/L under various wind speeds from 0 to 6.0 m/s, were used to examine the influence of the surfactant on the volatilization of the test organic compounds. The results indicated that the surfactant in the solution suppressed the volatilization of organic compounds. The degree of volatilization reduction was inversely proportional to the Sw values of the test organic compounds. The curve profiles for the KOL values of the organic compounds in the surfactant solutions, relative to the selected wind speed, were divided into the following two stages: the sharp-rise stage and the stable-linearity stage. The critical finding was that the surfactant markedly enhanced the concentrations of the low Sw compounds at the interface. The wind may cause an unexpected increase in the KOL value of the low Sw compound in the solution that contains a high surfactant concentration.


Volatilization rate Volatilization reduction Surfactants Wind Interface concentration

Related Article

Critical Emissions from the Largest On-Road Transport Network in South Asia

Saroj Kumar Sahu , Gufran Beig, Neha Parkhi
Volume: 14 | Issue: 1 | Pages: 135-144
DOI: 10.4209/aaqr.2013.04.0137

Ambient Air Quality during Diwali Festival over Kolkata – A Mega-City in India

A. Chatterjee , C. Sarkar, A. Adak, U. Mukherjee, S.K. Ghosh, S. Raha
Volume: 13 | Issue: 3 | Pages: 1133-1144
DOI: 10.4209/aaqr.2012.03.0062

Exploring the Variation between EC and BC in a Variety of Locations

Gbenga Oladoyin Salako, Philip K. Hopke , David D. Cohen, Bilkis A. Begum, Swapan K. Biswas, Gauri Girish Pandit, Yong-Sam Chung, Shamsiah Abd Rahman, Mohd Suhaimi Hamzah, Perry Davy, Andreas Markwitz, Dagva Shagjjamba, Sereeter Lodoysamba, Wanna Wimolwattanapun, Supamatthree Bunprapob
Volume: 12 | Issue: 1 | Pages: 1-7
DOI: 10.4209/aaqr.2011.09.0150