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Environments 2016, 3(4), 27; doi:10.3390/environments3040027

Study on the Kinetics and Removal Formula of Methanethiol by Ethanol Absorption

1
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
2
Research Center of Water Supply and Water Pollution Control, Wuhan University of Technology, Wuhan 430070, China
3
Henan Civil Aviation Development and Investment Co. Ltd, Zhengzhou 450000, China
*
Author to whom correspondence should be addressed.
Academic Editors: Ki-Hyun Kim and Abderrahim Lakhouit
Received: 1 September 2016 / Revised: 20 October 2016 / Accepted: 21 October 2016 / Published: 27 October 2016
(This article belongs to the Special Issue Volatile Organic Compounds in Environment)
View Full-Text   |   Download PDF [684 KB, uploaded 27 October 2016]   |  

Abstract

Biological filtration is widely used for deodorising in wastewater treatment plants. This technique can efficiently remove soluble odour-causing substances, but minimally affects hydrophobic odorants, such as methanethiol (MT) and dimethyl sulfide. Ethanol absorption capacity for MT (as a representative hydrophobic odorant) was studied, and the MT removal rate formula was deduced based on the principle of physical absorption. Results indicated that the MT removal rate reached 80% when the volume ratio of ethanol/water was 1:5. The phase equilibrium constant was 0.024, and the overall mass transfer coefficient was 2.55 kmol/m2·h in the deodorisation tower that functioned as the physical absorption device. Examination results showed that the formula exhibited adaptability under changing working conditions. These findings provide a reference for engineering design and operation of a process for the removal of MT by ethanol absorption. View Full-Text
Keywords: ethanol; methanethiol (MT); absorption; removal formula; kinetic parameters ethanol; methanethiol (MT); absorption; removal formula; kinetic parameters
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Jiang, Y.; Lin, X.; Li, W.; Liu, X.; Wu, Y. Study on the Kinetics and Removal Formula of Methanethiol by Ethanol Absorption. Environments 2016, 3, 27.

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