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Environ Technol

Title:		Modified rotating biological contactor for removal of dichloromethane vapours
Author(s):		Ravi R; Philip L; Swaminathan T;
Address:		"a Department of Chemical Engineering , Annamalai University , Chidambaram , India"
Journal Title:		Environ Technol
Year:		2015
Volume:		20140903
Issue:		5-Aug
Page Number:		566 - 572
DOI:		10.1080/09593330.2014.953553
ISSN/ISBN:		0959-3330 (Print) 0959-3330 (Linking)
Abstract:		"Bioreactors are used for the treatment of waste gas and odour that has gained much acceptance in the recent years to treat volatile organic compounds (VOCs). The different types of bioreactors (biofilter, biotrickling filter and bioscrubber) have been used for waste gas treatment. Each of these reactors has some advantages and some limitations. Though biodegradation is the main process for the removal of the pollutants, the mechanisms of removal and the microbial communities may differ among these bioreactors. Consequently, their performance or removal efficiency may also be different. Clogging of reactor and pressure drop are the main problems. In this study attempts are made to use the principle of rotating biological contactor (RBC) used for wastewater treatment for the removal of VOC. To overcome the above problem the RBC is modified which is suitable for the treatment of VOC (dichloromethane, DCM). DCM is harmful to human health and hazardous to the atmospheric environment. Modified RBC had no clogging problems and no pressure drop. So, it can handle the pollutant load for a longer period of time. A maximum elimination capacity of 25.7 g/m3 h has been achieved in this study for the DCM inlet load of 58 g/m3 h. The average biofilm thickness is 1 mm. The transient behaviour of the modified RBC treating DCM was investigated. The modified RBC is able to handle shutdown, restart and shock loading operations"
Keywords:		Air Pollutants/*isolation & purification Biofilms *Bioreactors Methylene Chloride/*isolation & purification biofilm thickness dichloromethane elimination capacity modified RBC transient operations;
Notes:		"MedlineRavi, R Philip, Ligy Swaminathan, T eng Evaluation Study England 2014/09/05 Environ Technol. 2015 Mar-Apr; 36(5-8):566-72. doi: 10.1080/09593330.2014.953553. Epub 2014 Sep 3"