| Abstract: | Use of methyl bromide (MeBr) as a quarantine, commodity, or structural fumigant is under scrutiny because its release to the atmosphere contributes to the depletion of stratospheric ozone. A closed-system bioreactor consisting of 0.5 L of a growing culture of a previously described bacterium, strain IMB-1, removed MeBr (> 110 ??mol L-1) from recirculating air. Strain IMB-1 grew slowly to high cell densities in the bioreactor using MeBr as its sole carbon and energy source. Bacterial oxidation of MeBr produced CO2 and hydrobromic acid (HBr), which required continuous neutralization with NaOH for the system to operate effectively. Strain IMB-1 was capable of sustained oxidation of large amounts of MeBr (170 mmol in 46 d). In an open-system bioreactor (10-L fermenter), strain IMB-1 oxidized a continuous supply of MeBr (220 ??mol L-1 in air). Growth was continuous, and 0.5 mol of MeBr was removed from the air supply in 14 d. The specific rate of MeBr oxidation was 7 ?? 10-16 mol cell-1 h-1. Bioreactors such as these can therefore be used to remove large quantities of contaminant MeBr, which opens the possibility of biodegradation as a practical means for its disposal. |
| Genre: | Article |
| ProdID: | 70025720 |
| Citation Author: | Miller, L. G.; Baesman, S. M.; Oremland, R. S. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 1704 |
| Citation Issue: | 8 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Environmental Science and Technology |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 7 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Bioreactors for removing methyl bromide following contained fumigations; 2003; Article; Journal; Environmental Science and Technology; Miller, L. G.; Baesman, S. M.; Oremland, R. S. |
| Citation Start Page: | 1698 |
| Citation Volume: | 37 |
| Citation Year: | 2003 |
| Type: | citation/reference |
| Text: | Bioreactors for removing methyl bromide following contained fumigations; 2003; Article; Journal; Environmental Science and Technology; Miller, L. G.; Baesman, S. M.; Oremland, R. S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1021/es026155j |
| Date Other: | Wed, 1 Jan 2003 00:00 -0600 |
| Publisher: | |
