Polyhydroxyalkanoates (PHAs) production was carried out under various C:N ratios. A ratio of 100 resulted best polymer yield. C-source was an important factor in synthesis. For example, as the ratio of valeric acid (C5) to butyric acid (C4) in N-free medium was increased, the mole fraction of HV in the copolymer increased. When soy waste was used as a C-source a copolymer, a high HV mole fraction (HB:HV, 75:25) was produced while when malt waste was used, a much lower HV mole fraction (HB:HV, 90:10) was generated. It was concluded that activated sludge bacteria could be induced to produce PHAs using food wastes as C-sources and this could be the basis for production of biodegradable plastics. Copyright © 2006 Elsevier Ltd. All rights reserved.
|Publication status||Published - 2007|
CitationWang, Y. J., Hua, F. L., Tsang, Y. F., Chan, S. Y., Sin, S. N., Chua, H., Yu, P. H. F., Ren, N. Q. (2007). Synthesis of PHAs from waste under various C:N ratios. Bioresource Technology, 98(8), 1690-1693.
- Activated sludge