Controlling of two destructive zooplanktonic predators in Chlorella mass culture with surfactants.

Controlling of two destructive zooplanktonic predators in Chlorella mass culture with surfactants.
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用表面活性剂控制小球藻大规模培养中的两种破坏性浮游动物捕食者。

DOI:
10.1186/s13068-021-01873-6
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发表时间:
2021-01-14
影响因子:
6.3
通讯作者:
Li Y
Li Y
中科院分区:
工程技术1区
文献类型:
--
作者:
Wen X;Zhang A;Zhu X;Liang L;Huo Y;Wang K;Yu Y;Geng Y;Ding Y;Li Y

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捕食性鞭毛虫和纤毛虫是小球藻大量培养过程中常见的两种生物污染物,经常造成生物量的损失。在小球藻的大量培养中,尤其是在生物燃料生产中,需要有效和有针对性的方法来控制这些污染。对5种表面活性剂在小球藻培养中的生物污染控制效果进行了研究。所有五种表面活性剂都能够在适当的浓度下消除污染物。特别是十二烷基苯磺酸钠(SDBS)完全消除Poterioochromonas sp.和Hemirosomoida sp.的最低有效浓度分别为8和10 mg L-1,但小球藻的光合作用和活力没有受到显着影响。这些结果进一步验证了小球藻大量培养在5,20,和200平方米的跑道池塘。提出了用10 mg L-1十二烷基苯磺酸钠(SDBS)作为农药控制小球藻群体培养中捕食性鞭毛虫或纤毛虫污染的化学方法。该方法有助于持续的微藻生物质生产和利用,特别是用于生物燃料生产。
Predatory flagellates and ciliates are two common bio-contaminants which frequently cause biomass losses in Chlorella mass culture. Efficient and targeted ways are required to control these contaminations in Chlorella mass cultivation aiming for biofuel production especially. Five surfactants were tested for its ability to control bio-contaminations in Chlorella culture. All five surfactants were able to eliminate the contaminants at a proper concentration. Particularly the minimal effective concentrations of sodium dodecyl benzene sulfonate (SDBS) to completely eliminate Poterioochromonas sp. and Hemiurosomoida sp. were 8 and 10 mg L−1, respectively, yet the photosynthesis and viability of Chlorella was not significantly affected. These results were further validated in Chlorella mass cultures in 5, 20, and 200 m2 raceway ponds. A chemical method using 10 mg L−1 SDBS as pesticide to control predatory flagellate or ciliate contamination in Chlorella mass culture was proposed. The method helps for a sustained microalgae biomass production and utilization, especially for biofuel production.
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