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| 共培养微藻Monoraphidium sp. eh1和Monoraphidium sp. eh3提高油脂产率和沉降率 |
| Enhancement of lipid productivity and flocculation efficiency by co-cultivation of Monoraphidium sp. eh1 and Monoraphidium sp. eh3 |
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| DOI： |
| 中文关键词: 微藻 Monoraphidium 共培养 油脂产率 沉降率 采收成本 |
| 英文关键词:microalgae Monoraphidium co-cultivation lipid productivity flocculation efficiency harvesting cost |
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| 中文摘要: |
| 为了提高微藻油脂产率，降低其采收成本，对比了微藻Monoraphidium sp. eh1和Monoraphidium sp. eh3单独培养和共培养方式的影响，同时对于培养结束后提升微藻沉降率的方法进行了研究。结果表明：微藻Monoraphidium sp. eh1和Monoraphidium sp. eh3单独培养的油脂产率分别为17.45 mg/(L·d)和15.35 mg/(L·d)，而共培养油脂产率可达到38.82 mg/(L·d)；通过共培养后调节藻液pH至7.0的方法，30 min沉降率可达到95.38%，与添加絮凝剂的沉降效果相当，相较于单独培养的eh1、eh3的沉降率10.01%和53.60%有显著提升。共培养技术结合调节pH的方式，可以为提高微藻油脂产率和降低采收成本提供一种具有可行性的解决方案 |
| 英文摘要: |
| In order to increase the lipid productivity of microalgae and reduce its harvesting cost, the effects of mono-cultivation and co-cultivation of Monoraphidium sp. eh1 and Monoramidium sp. eh3 were compared, and the method of raising the flocculation efficiency of microalgae after culture was studied. The results showed that the co-cultivation of Monoraphidium sp. eh1 and Monoraphidium sp. eh3 significantly increased the lipid productivity(38.82 mg/(L·d)) compared with mono-cultivations(1745 mg/(L·d) and 15.35 mg/(L·d)). By adjusting the pH to 7.0 after co-cultivation, the flocculation efficiency of settling for 30 min reached 95.38%, which was equivalent to the flocculation efficiencies of the system added with flocculant. Compared with the flocculation efficiencies of mono-cultured eh1 and eh3 of 10.01% and 53.60%, there was a significant increase. Therefore, the method of co-cultivation technology combined with pH adjustment could provide a feasible solution for increasing the lipid productivity and reducing the harvesting cost of microalgae. |
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