Photosynthetic bacterial protein production from wastewater: Effects of C/N and light‑oxygen condition
| Autor: | Qiangang Li, Kefan Cao, Ran Zhi, Guangming Zhang, Hongjie Wang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Process Chemistry and Technology chemistry.chemical_element Photosynthesis Oxygen Amino acid Bacterial protein Amino acid composition chemistry Wastewater Photosynthetic bacteria Food science Safety Risk Reliability and Quality Waste Management and Disposal Anaerobic exercise Biotechnology |
| Zdroj: | Journal of Water Process Engineering. 44:102361 |
| ISSN: | 2214-7144 |
| Popis: | Photosynthetic bacteria (PSB) can produce protein while treating wastewater, thus contributing to sustainable development. This work aims to clarify the effects of wastewater C to N ratio and light‑oxygen condition on protein production performance of PSB. The results showed that PSB could effectively recover protein when C to N ratio was within the range of 5–50 and lower C/N was more favorable. The highest protein productivity in light-anaerobic, dark-aerobic, and light-aerobic condition reached 115.1, 143.4, and 207.7 mg·L−1·d−1, respectively. A light‑oxygen regulation strategy (aerobic conditions should be chosen for wastewater with low C/N, while anaerobic condition should be chosen for wastewater with high C/N) was proposed based on protein productivity. Amino acid composition of PSB could keep stable (essential amino acids: around 40%). This work provides basis for treating wastewater with different C to N ratios and promoting the practical applications of PSB protein recovery technology. |
| Databáze: | OpenAIRE |
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