PMID: 18409643Apr 16, 2008Paper

Membrane-aerated biofilm reactor for the treatment of acetonitrile wastewater

Environmental Science & Technology
Tinggang LiF S Wong

Abstract

A membrane-aerated biofilm reactor (MABR) was studied for the treatment of wastewater containing acetonitrile, a typical organonitrile compound. The MABR used hydrophobic hollow fiber membranes as the diffusers for bubbleless aeration as well as the carriers for biofilm growth. The objectives were to prevent the stripping-loss of acetonitrile during aeration and to achieve acetonitrile biodegradation plus nitrogen removal simultaneously in a single biolfilm on the membranes. In the MABR, oxygen and substrates were supplied to the biofilm from opposite sides, in contrast to those from the same side in conventional biofilm bioreactors. Operational factors, including surface loading rate and upflow fluid velocity in the bioreactor, on the effect of acetonitrile biodegradation performance were examined. The profiles of dissolved oxygen concentration and microbial activities and populations in the biofilm were investigated. Experimental results showed that, with the adapted microorganisms, removal of acetonitrile at approximately 98.6 and 83.3%, in terms of total organic carbon and total nitrogen, were achieved at a surface loading rate (in terms of membrane surface) of up to 11.29 g acetonitrile/ m2 x d with an upflow fluid velocit...Continue Reading

References

Jan 1, 1979·Annual Review of Microbiology·L W Belser
Jul 1, 1986·Fundamental and Applied Toxicology : Official Journal of the Society of Toxicology·F R JohannsenD E Rodwell
Jul 1, 1982·Toxicology Letters·A E Ahmed, M Y Farooqui
Apr 1, 1999·Biotechnology and Bioengineering·E CaseyG Hamer
May 15, 2002·Journal of Biotechnology·Hong Liu, Herbert H P Fang
Oct 17, 2002·Applied Microbiology and Biotechnology·A BanerjeeU C Banerjee
Apr 7, 2004·Applied and Environmental Microbiology·Alina C ColeTimothy M LaPara
Jul 1, 2004·Environmental Science & Technology·John W Shanahan, Michael J Semmens
Jan 25, 2005·Applied Microbiology and Biotechnology·Raul MuñozBo Mattiasson
Feb 15, 2005·Water Research·Kristina HåkanssonBo Mattiasson
Sep 27, 2005·Applied Microbiology and Biotechnology·C M KaoS C Chen
Nov 18, 2005·Journal of Industrial Microbiology & Biotechnology·Timothy M LaParaMichael J Semmens
Sep 1, 1989·Applied and Environmental Microbiology·M S NawazJ H Wolfram
Jul 5, 1995·Biotechnology and Bioengineering·L M Dos Santos, A G Livingston
Mar 20, 1996·Biotechnology and Bioengineering·K Brindle, T Stephenson

❮ Previous
Next ❯

Citations

Sep 22, 2009·Environmental Science & Technology·Barry HeffernanEoin Casey

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.