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首页> 外文期刊>International Biodeterioration & Biodegradation >Optimization of biomass harvesting of microalgae, Chlorella sp utilizing auto-flocculating microalgae, Ankistrodesmus sp as bio-flocculant
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Optimization of biomass harvesting of microalgae, Chlorella sp utilizing auto-flocculating microalgae, Ankistrodesmus sp as bio-flocculant

机译：利用自絮凝微藻，小球藻作为生物絮凝剂优化微藻，小球藻的生物量收获

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Current microalgae harvesting technology depends on sophisticated and complex approaches such as hollow fiber filtration, chemical flocculants and centrifugation, which are deemed feasible if high value products were obtained. In this study the potential of auto-flocculating microalgae Ankistrodesmus sp. was examined for its potential as bio-flocculant to harvest Chlorella sp. Zeta Potential Analysis was performed on the microalgae in the pH range of 4.16-9.55 before subjecting the microalgae to the coagulation - flocculation assay. The isoelectric point of microalgae suspension was observed in the range of pH 5-8 and the magnitude of zeta potentials ranged between -10 my to -35 my. Ankistrodesmus sp. was inoculated at a dosage of 50% (v/v) into a batch of Chlorella sp. culture during the coagulation flocculation assay. The removal efficiency shown by Ankistrodesmus sp. was 82% at pH 7.1 followed by 55% at pH 6.2. Utilizing Ankistrodesmus sp. for flocculation was efficient since it did not require any changes of pH because isoelectric point was observed within the normal pH of Chlorella sp. growth condition. Development of innovative microalgae treatment technology incorporating continuous bio-harvesting with microalgae-microalgae flocculation could provide a low-cost and sustainable wastewater treatment approach. In addition, the use of microalgae itself to harvest microalgae biomass harvesting could simplify downstream processing, saving resources and would reduce the production cost for future microalgae-based technology. (C) 2016 Elsevier Ltd. All rights reserved.
机译：当前的微藻收获技术依赖于复杂而复杂的方法，例如中空纤维过滤，化学絮凝剂和离心分离，如果获得高价值的产品，这被认为是可行的。在这项研究中，自动絮凝微藻Ankistrodesmus sp。的潜力。考察了其作为生物絮凝剂收获小球藻的潜力。在将微藻进行凝结-絮凝测定之前，在pH范围为4.16-9.55的微藻上进行Zeta电位分析。在pH 5-8范围内观察到微藻悬浮液的等电点，ζ电位的幅度在-10 my至-35 my之间。腕龙属以50％（v / v）的剂量将其接种到一批小球藻中。凝结絮凝测定过程中进行培养。 Ankistrodesmus sp。显示的去除效率。在pH 7.1下为82％，然后在pH 6.2为55％。利用Ankistrodesmus sp。絮凝是有效的，因为它不需要改变pH值，因为在小球藻的正常pH范围内观察到了等电点。生长状况。开发创新的微藻处理技术，将连续生物捕集与微藻-微藻絮凝相结合，可以提供一种低成本且可持续的废水处理方法。另外，使用微藻本身来收获微藻生物质的收获可以简化下游加工，节省资源，并且可以降低未来基于微藻的技术的生产成本。 （C）2016 Elsevier Ltd.保留所有权利。

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