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首页> 外文期刊>Renewable energy >A sustainable process train for a marine microalga-mediated biomass production and CO_2 capture: A pilot-scale cultivation of Nannochloropsis salina in open raceway ponds and harvesting through electropreciflocculation
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A sustainable process train for a marine microalga-mediated biomass production and CO_2 capture: A pilot-scale cultivation of Nannochloropsis salina in open raceway ponds and harvesting through electropreciflocculation

机译：用于海洋微藻介导的生物质生产和CO_2捕获的可持续流程列车：通过电化池塘的开放滚道池塘中的Nannchloropsis Salina的试验规模培养

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摘要

Major challenges in cultivation, harvesting, CO2 capture and downstream processing of microalgae biomass have to be confronted for successful commercial deployment. This study explored a sustainable process train to mass-produce a native marine algal strain, Nannochloropsis salina, for biocrude production and CO2 capture. The microalga was cultivated in a 3-m(2) raceway pond with manual agitation, 10-m(2) raceway ponds with and without CO2 supplementation and a 120-m(2) pond with CO2 supplementation using carbonation column reactor (CCR). During the above experiments, the areal productivities obtained ranged from 7.5 to 34.4 g m(-2) d(-1) and the lipid content was between 29 and 80%. This study also demonstrated a novel 10 KLPD (kilolitres per day) capacity electropreciflocculation (ePF) reactor (similar to 0.56-0.78 KWh/KL) and filter press for biomass harvesting with 98.24% efficiency. The CO2 capture of N. Salina estimated was in the range of 45.38-208.12 tons ha(-1) y(-1), and the average was 95.39 tons ha(-1) y(-1). The cost estimated based on the 120-m(2) pond trials was $3.46/kg of dry algal biomass. Thus the findings provide immense scope for future research on large-scale cultivation of Nannochloropsis salina for biofuel production and carbon capture applications. (C) 2021 Elsevier Ltd. All rights reserved.
机译：培养，收获，二氧化碳捕获和微藻生物质的下游加工的主要挑战必须面临成功的商业部署。本研究探讨了可持续的流程列车，以批量生产天然海藻藻类菌株Nannochloropsis Salina，用于生物学生产和CO2捕获。微藻在3米（2）个滚道池中培养，手动搅拌，10米（2）次滚道池，使用碳化柱反应器（CCR）为120米（2）个池塘和120米（2）个池塘（CCR） 。在上述实验期间，所得面积的生产率范围为7.5至34.4g m（-2）d（-1）和脂质含量在29-80％之间。本研究还证明了一种新型10 kLPD（每天千粒）电容电镀电容（EPF）反应器（类似于0.56-0.78 kWh / KL），并以98.24％的效率收获的生物质收获。估计的N.萨利纳的二氧化碳捕获在45.38-208.12吨（-1）吨（-1）的范围内，平均为95.39吨HA（-1）y（-1）。基于120-m（2）池塘试验的费用为3.46 /千克的干藻生物量。因此，该研究结果为未来的纳米氯磺酸盐盐砂砂砂矿制育砂盐砂矿的研究提供了巨大的研究范围。 （c）2021 elestvier有限公司保留所有权利。

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