将带有旋转筛盘的新型带式输送反应器与气升泡柱作为光生物反应器进行二氧化碳封存比较

Q1 Chemical Engineering
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引用次数: 0

摘要

本研究旨在评估新型三相反应器带式输送反应器 BCR(带旋转筛盘,专利号:GB2567340B)作为光生物反应器与传统气升式气泡塔 ALR 的性能比较,两者都受到气体流量的影响。用二氧化碳浓度为 0.038% 的环境空气和 0.145、0.195、0.24 和 0.29 vvm(反应器中每分钟的气体体积/液体体积)的不同曝气流量在这两种光生物反应器中培养小球藻。此外,两种光生物反应器对二氧化碳的吸收效率分别为:BCR 40%,ALR 25%。创新设计成功地提高了搅拌的运行质量,筛盘内的气体保持率高,使生物量的增长比 ALR 高出 50%。在气泡曝气条件下,当特定曝气率为 0.145 vvm 时,ALR 的二氧化碳最大固定率约为 18%。而在 BCR 中,气流速率为 0.145-0.24 vvm 的宽范围运行条件下,二氧化碳固定率可达到约 38%,这得益于旋转托盘使液体分布均匀,以及良好的气液传质表面积。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CO2 sequestration using a novel Belt Conveyor Reactor with rotating sieve trays compared with Airlift Bubble Column as photobioreactors

The present work aims to evaluate the performance of a novel three-phase reactor Belt Conveyor Reactor BCR (with rotating sieve trays patent GB2567340B) as a photobioreactor compared with a traditional Airlift Bubble Column ALR, both influenced by the flow of the gas. Chlorella vulgaris was cultivated in these two photobioreactors using ambient air has a CO2 concentration of 0.038% with different aeration flowrates 0.145, 0.195, 0.24, and 0.29 vvm (gas volume per minute/liquid volume in the reactor).

The maximum growth rate achieved on the 14th day of culture was 2.120 and 1.420 g/L for BCR, ALR respectively, with initial biomass concentrations of 0.2 g/L and aeration flow of 0.29 vvm. Moreover, the removal efficiency of carbon dioxide sequestration by the two photobioreactors is 40% for BCR and 25% for ALR. The innovative design succeeded in operational quality of agitation with high gas holdup inside the sieve trays to increase the biomass growth up to 50% higher than in the ALR. The maximum CO2 fixation for ALR was at about 18% at a specific aeration rate of 0.145 vvm in the bubbly regime. Whereas in the BCR can be reached about 38% with wide range operation condition of airflow rate 0.145–0.24 vvm due to well-distributed liquid due to rotating trays, and good gas–liquid mass transfer surface area.

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来源期刊
Journal of King Saud University, Engineering Sciences
Journal of King Saud University, Engineering Sciences Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
12.10
自引率
0.00%
发文量
87
审稿时长
63 days
期刊介绍: Journal of King Saud University - Engineering Sciences (JKSUES) is a peer-reviewed journal published quarterly. It is hosted and published by Elsevier B.V. on behalf of King Saud University. JKSUES is devoted to a wide range of sub-fields in the Engineering Sciences and JKSUES welcome articles of interdisciplinary nature.
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