在半工业规模光生物反应器中用于光合沼气升级的控制策略的性能评估。
Performance evaluation of a control strategy for photosynthetic biogas upgrading in a semi-industrial scale photobioreactor.
机构信息
Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n., Valladolid 47011, Spain; Institute of Sustainable Processes, University of Valladolid, 47011 Valladolid, Spain.
Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n., Valladolid 47011, Spain; Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Av. España, 1680 Valparaíso, Chile.
出版信息
Bioresour Technol. 2020 Jul;307:123207. doi: 10.1016/j.biortech.2020.123207. Epub 2020 Mar 20.
The validation of a control strategy for biogas upgrading via light-driven CO consumption by microalgae and HS oxidation by oxidizing bacteria using the oxygen photosynthetically generated was performed in a semi-industrial scale (9.6 m) photobioreactor. The control system was able to support CO concentrations lower than 2% with O contents ≤ 1% regardless of the pH in the cultivation broth (ranging from 9.05 to 9.50). Moreover, the control system was efficient to cope with variations in biogas flowrate from 143 to 420 L h, resulting in a biomethane composition of CO < 2.4%, CH > 95.5%, O < 1% and no HS. Despite the poor robustness of this technology against failures in biogas and liquid supply (CH concentration of 67.5 and 70.9% after 2 h of biogas or liquid stoppage, respectively), the control system was capable of restoring biomethane quality in less than 2 h when biogas or liquid supply was resumed.
在半工业规模（9.6 m）光生物反应器中，通过光合产生的氧气来氧化 HS，利用微藻消耗光驱动的 CO 来验证沼气升级的控制策略，该策略已得到验证。该控制系统能够支持 CO 浓度低于 2%，O 含量≤1%，而与培养液的 pH 无关（范围为 9.05 至 9.50）。此外，该控制系统能够有效地应对沼气流量从 143 到 420 L/h 的变化，从而产生 CO<2.4%、CH>95.5%、O<1%和无 HS 的生物甲烷组成。尽管该技术对沼气和液体供应故障的鲁棒性较差（沼气或液体停止供应 2 小时后，CH 浓度分别为 67.5%和 70.9%），但当沼气或液体供应恢复时，控制系统能够在不到 2 小时内恢复生物甲烷质量。
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