Enhanced attached growth of microalgae Scenedesmus. LX1 through ambient bacterial pre-coating of cotton fiber carriers
| Autor: | Y. Azimi, Lin-Lan Zhuang, Hong-Ying Hu, Yin-Hu Wu, Guo-Hua Dao, Dawei Yu, Wen-Long Wang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Environmental Engineering Nitrogen chemistry.chemical_element Photobioreactor Bioengineering 010501 environmental sciences Biology engineering.material 01 natural sciences Photobioreactors 03 medical and health sciences Extracellular polymeric substance Coating Oxygen evolving activity Botany Microalgae Cotton Fiber Food science Waste Management and Disposal Scenedesmus 0105 earth and related environmental sciences Bacteria Renewable Energy Sustainability and the Environment Phosphorus General Medicine biology.organism_classification Oxygen 030104 developmental biology chemistry engineering |
| Zdroj: | Bioresource Technology. 218:643-649 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2016.07.013 |
| Popis: | The role of bacteria/extracellular polymeric substances (EPS) coated carriers on attached microalgae growth in suspended-solid phase photobioreactor (sspBR) was assessed in this study. The results showed that pre-coating cotton with ambient bacteria and their EPS improved the attached microalgal growth by as much as 230% in terms of attached microalgae density. Additionally, the single cell dry weight, chemical composition and oxygen evolving activity of attached microalgae were significantly affected by the presence of bacteria/EPS coating on the cotton carriers. The protein content of microalgae cells cultivated in the ssPBRs with carriers coated by bacteria and sterilized bacteria were on average 26% and 15% more than uncoated carriers, respectively. Through absorbing and immobilizing nutrients from the bulk medium, the bacteria/EPS coating provided the attached microalgae with nitrogen/phosphorus for protein synthesis, especially during the late stages of batch cultivation. |
| Databáze: | OpenAIRE |
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