Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
678204 | Biomass and Bioenergy | 2009 | 7 Pages |
Abstract
A five-level-three factor central composite rotary design was employed to find out the interactive effects of three variables, i.e. static magnetic field intensity, concentration of NH3–N and initial pH on polyhydroxyalkanoates (PHA) production by activated sludge under the aerobic dynamic feeding (ADF) technique. Response surface methodology (RSM) was utilized for process optimization and a second-order polynomial equation was obtained by multiple regression analysis. A yield of 49.5% of dry cell weight (dcw) was achieved at optimized conditions, i.e. magnetic field 11 mT, NH3–N 4.8 mg l−1 (C:N = 60:1)and initial pH 9.0.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Chen Hong, Huang Hao, Wu Haiyun,