Production of polyhydroxyalkanoates and enrichment of associated microbes in bioreactors fed with rice winery wastewater at various organic loading rates
| Autor: | Jia-Shun Cao, Wen-Ming Xie, Fang Fang, Yan-Qiu Huang, Su-Na Wang, Zhang Lulu, Jin-Yun Dong, Xueming Chen, Run-Ze Xu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Environmental Engineering Microorganism Population Polyhydroxyalkanoates (PHA) Bioengineering chemical and pharmacologic phenomena Activated sludge model 010501 environmental sciences Wastewater 01 natural sciences Polyhydroxyalkanoates Zoogloea Mathematical model Bioreactors 010608 biotechnology Bioreactor education Waste Management and Disposal 0105 earth and related environmental sciences education.field_of_study biology Sewage Renewable Energy Sustainability and the Environment Chemistry Rice winery wastewater Microbial enrichment Oryza General Medicine biology.organism_classification Pulp and paper industry Organic loading rate (OLR) Microbial population biology |
| Zdroj: | Fang, F, Xu, R Z, Huang, Y Q, Wang, S N, Zhang, L L, Dong, J Y, Xie, W M, Chen, X & Cao, J S 2019, ' Production of polyhydroxyalkanoates and enrichment of associated microbes in bioreactors fed with rice winery wastewater at various organic loading rates ', Bioresource Technology, vol. 292, 121978 . https://doi.org/10.1016/j.biortech.2019.121978 |
| ISSN: | 1873-2976 |
| Popis: | This study aimed to explore the production of polyhydroxyalkanoates (PHA) and selection of PHA-accumulating microorganisms in bioreactors fed with rice winery wastewater at various organic loading rates (OLRs). The substrate utilization, sludge properties, PHA synthesis and microbial community structure of three sequencing batch reactors were monitored. The results show the highest PHA yield (0.23 g/g) was achieved in one of the three reactors with an OLR of 2.4 g COD/L/d, in which Zoogloea was the most dominant PHA-accumulating microorganism. To quantify the PHA production and track the population changing profiles of the PHA-accumulating microorganisms in the long-term reactor operation, the Activated Sludge Model No. 3 was modified with two different heterotrophic microorganisms responding differently with the same substrate. The modeling results indicate that a moderate OLR (>2.4 gCOD/L/d) was beneficial for PHA production. The results are useful for understanding the PHA production from industrial wastewaters and selection of PHA-accumulating microorganisms. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect