Using surfactants for controlling rotifer contamination in mass cultivation of Chlorella pyrenoidosa
Using surfactants for controlling rotifer contamination in mass cultivation of Chlorella pyrenoidosa
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使用表面活性剂控制蛋白核小球藻大规模培养中轮虫污染
DOI:
10.1016/j.algal.2020.102166
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发表时间:
2021-03
期刊:
影响因子:
--
通讯作者:
Yeguang Li
中科院分区:
文献类型:
--
作者:
Aoqi Zhang;Xiaobin Wen;Kaixuan Wang;Yan Huo;Yahong Geng;Yi Ding;Yeguang Li
Frequent microzooplankton contamination such as rotifers in Chlorella mass culture often causes devastating effects on biomass production. In this study, five surfactants were used to control contamination by a rotifer,Brachionus calyciflorus, in Chlorella pyrenoidosa XQ-20044 cultures. Laboratory results showed that the minimal effective concentrations of surfactants for complete control ofB. calycifloruswere 7.5, 10, 10, 10, and 15 mg L−1for primary alcohol ethoxylate, sodium dodecylbenzene sulfonate, sodium alcohol ether sulfate, coconut diethanolamide, and sodium dodecyl sulfate, respectively. However, only 10 mg L−1sodium dodecylbenzene sulfonate and 7.5–10 mg L−1primary alcohol ethoxylate had no negative effects on algal growth. Moreover, in a 5 m2open raceway pond, 10 mg L−1sodium dodecylbenzene sulfonate ensured swift and total elimination of rotifers, while the final dry weight of the algae reached >0.74 g L−1whereas the cost of using sodium dodecylbenzene sulfonate was only $ 0.014. The results of this study indicated that sodium dodecylbenzene sulfonate approach is fast-acting, highly effective, and a low-cost treatment. Therefore, sodium dodecylbenzene sulfonate has great potential for biological contamination control in microalgae mass culture without a negative impact on algal growth.
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