Harvesting Environmental Microalgal Blooms for Remediation and Resource Recovery: A Laboratory Scale Investigation with Economic and Microbial Community Impact Assessment.
Harvesting Environmental Microalgal Blooms for Remediation and Resource Recovery: A Laboratory Scale Investigation with Economic and Microbial Community Impact Assessment.
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DOI：
10.3390/biology7010004
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发表时间：
2017-12-29
期刊：
影响因子：
4.2
通讯作者：
Ferguson AS
中科院分区：
文献类型：
--
作者：
Pandhal J;Choon WL;Kapoore RV;Russo DA;Hanotu J;Wilson IAG;Desai P;Bailey M;Zimmerman WJ;Ferguson AS
一种基于实验室的微浮选装置，称为藻类高效浮选技术（effloat），用于优化从富营养化水体系统中收获微藻生物量的参数。这样做是为了实现修复（营养物去除）和资源回收的双重目标。初步实验表明，壳聚糖对生物质的絮凝效果优于明矾，在自然条件下，细菌的存在可以起到积极的作用，降低絮凝剂的用量。5 mg·L−1壳聚糖（叶绿素a去除率90%）对超富营养化蓄水池样品的生物量去除率最高。最大采收率表明，10天后，细菌多样性显著增加，蓝藻减少，表明生态系统功能改善。生物量内的资源潜力为每mg生物量含有9.02 μg磷酸盐、0.36 mg蛋白质和103.7 μg脂质。脂肪酸甲酯组成与纯培养的微藻相当，以C16和C18链长为主，含有饱和、单不饱和和多不饱和脂肪酸。最后，将实验室数据转化为全尺寸模块化eFLOAT系统，并估算成本，作为一种高效收集藻华的新型生态技术。
A laboratory based microflotation rig termed efficient FLOtation of Algae Technology (eFLOAT) was used to optimise parameters for harvesting microalgal biomass from eutrophic water systems. This was performed for the dual objectives of remediation (nutrient removal) and resource recovery. Preliminary experiments demonstrated that chitosan was more efficient than alum for flocculation of biomass and the presence of bacteria could play a positive role and reduce flocculant application rates under the natural conditions tested. Maximum biomass removal from a hyper-eutrophic water retention pond sample was achieved with 5 mg·L−1 chitosan (90% Chlorophyll a removal). Harvesting at maximum rates showed that after 10 days, the bacterial diversity is significantly increased with reduced cyanobacteria, indicating improved ecosystem functioning. The resource potential within the biomass was characterized by 9.02 μg phosphate, 0.36 mg protein, and 103.7 μg lipid per mg of biomass. Fatty acid methyl ester composition was comparable to pure cultures of microalgae, dominated by C16 and C18 chain lengths with saturated, monounsaturated, and polyunsaturated fatty acids. Finally, the laboratory data was translated into a full-size and modular eFLOAT system, with estimated costs as a novel eco-technology for efficient algal bloom harvesting.
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影响因子：
5.8
作者：
Bao, Ergude;Jiang, Tao;Girke, Thomas
通讯作者：
Girke, Thomas
影响因子：
3.3
作者：
Divakaran, R;Pillai, VNS
通讯作者：
Pillai, VNS
影响因子：
11.4
作者：
Bohutskyi, Pavlo;Chow, Steven;Bouwer, Edward J.
通讯作者：
Bouwer, Edward J.
影响因子：
16.6
作者：
Delgado-Baquerizo M;Maestre FT;Reich PB;Jeffries TC;Gaitan JJ;Encinar D;Berdugo M;Campbell CD;Singh BK
通讯作者：
Singh BK
影响因子：
3.9
作者：
Brittle, Stuart;Desai, Pratik;Zimmerman, William B.
通讯作者：
Zimmerman, William B.