A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bioconversion of Methylamine in Biofilters
Bioconversion of methylamine (MA) was studied using two sets of biofilters arranged in three stages and packed with inoculated peat-based media of initial pH 7.89 and 4.77, respectively. Tests were made to compare effects of initial media pH on the performance of the filter and on the variation of physicochemical properties of the medium for treating MA. A MA loading of 3.50 g nitrogen per m3 medium per hour was kept in the first stages of both filters. Results indicated that all the influent MA was hydrolyzed to ammonia in the pH range of 7.5 to 8.5. About 1/3 of the ammonia nitrogen was nitrified to nitrate and 1/3 was converted into organic or cell nitrogen. Properties of the media varied over time and with the height of the packing. The neutral medium performed well compared with the acid one. Maximum absorption capacities of 40 g ammonia-N and 42 g nitrate-N per kilogram of dry medium were observed for the neutral medium. Maximum rate of nitrification was 0.69 g nitrogen per m3 medium per hour, which occurred in the middle stage of the filter with the medium at a pH of 7.6 and containing a moisture of 55%.
Bioconversion of Methylamine in Biofilters
Bioconversion of methylamine (MA) was studied using two sets of biofilters arranged in three stages and packed with inoculated peat-based media of initial pH 7.89 and 4.77, respectively. Tests were made to compare effects of initial media pH on the performance of the filter and on the variation of physicochemical properties of the medium for treating MA. A MA loading of 3.50 g nitrogen per m3 medium per hour was kept in the first stages of both filters. Results indicated that all the influent MA was hydrolyzed to ammonia in the pH range of 7.5 to 8.5. About 1/3 of the ammonia nitrogen was nitrified to nitrate and 1/3 was converted into organic or cell nitrogen. Properties of the media varied over time and with the height of the packing. The neutral medium performed well compared with the acid one. Maximum absorption capacities of 40 g ammonia-N and 42 g nitrate-N per kilogram of dry medium were observed for the neutral medium. Maximum rate of nitrification was 0.69 g nitrogen per m3 medium per hour, which occurred in the middle stage of the filter with the medium at a pH of 7.6 and containing a moisture of 55%.
Bioconversion of Methylamine in Biofilters
Chou, Ming-Shean (author) / Shiu, Wen-Zen (author)
Journal of the Air & Waste Management Association ; 47 ; 58-65
1997-01-01
8 pages
Article (Journal)
Electronic Resource
Unknown
Bioconversion of Dimethylformamide in Biofilters
| Taylor & Francis Verlag | 1998
Bentonite-methylamine complexes
| Engineering Index Backfile | 1961
Waste Gas Treatment in Biofilters
| Taylor & Francis Verlag | 1996
Evaluating Design Options for Biofilters
| Taylor & Francis Verlag | 1997