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Author(s): |
Lei Jiang, Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
Senlin Tian, Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
Ping Ning, Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China |
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Abstract: |
Abstract: This study investigates the effects of adding cationic surfactant and microemulsion composed from surfactant and cosurfactant to the scrubbing liquid during the absorption of toluene using a double-stirred reactor. A cationic surfactant cetyltrimethylammonium bromide (CTAB) and a cosurfactant tetrabutylammonium bromide (TBAB) were used. The concentrations of the surfactant solutions and microemulsion all exceeded the critical micelle concentration (CMC). The results of continuous experiments indicate that the efficiencies of removal of toluene by CTAB solutions and microemulsion were 49.0 and 59.0 %, respectively, at a concentration of 0.1 mol·L-1. The removal efficiency of toluene by microemulsion ranged from 52.8 to 59.0% at concentrations from 0.01 mol·L-1 to 0.1 mol·L-1 under continuous scrubbing. In the experiments, the toluene absorption capacities were estimated to be 7.68 mg toluene/g CTAB and 9.46 mg toluene/g microemulsion. A comparison was also made between CTAB and microemulsion in terms of cost, removal efficiency, and absorption capacity.
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