Maestría en Ciencias Naturales e Ingeniería, Universidad Autónoma Metropolitana Cuajimalpa, Av. Vasco de Quiroga 4871, Colonia Santa Fe Cuajimalpa, 05300, Mexico City, Mexico.
Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana Cuajimalpa, Av. Vasco de Quiroga 4871, Colonia Santa Fe Cuajimalpa, 05300, Mexico City, Mexico.
Environ Sci Pollut Res Int. 2020 Aug;27(23):28561-28574. doi: 10.1007/s11356-020-08240-2. Epub 2020 Mar 4.
The microalga Scenedesmus obtusiusculus AT-UAM efficiently captured CO from two flue gas streams in a hybrid photobioreactor located in a greenhouse. Uptake rates of CO, NO, and SO from a formulated gas stream were 160.7 mg L day, 0.73 mg L day, and 1.56 mg L day, respectively, with removal efficiencies of 100% for all gases. Exhaust gases of a motor generator were also removed with uptake rates of 111.4 mg L day, 0.42 mg L day, and 0.98 mg L day, obtaining removal efficiencies of 77%, 71%, and 53% for CO, NO, and SO, respectively. On average, 61% of the CO from both flue gas streams was assimilated as microalgal biomass. The maximum CO uptake rate of 182 mg L day was achieved for formulated flue gas flow rate above 100 mL min. The biomass recovery of 88% was achieved using a 20-L electro-coagulation-flotation chamber coupled to a settler with a low specific power consumption of 0.27 kWh kg. The photobioreactor was operated for almost 7 months without contamination of invasive species or a decrease in the activity. It is a very encouraging result for long-term operation in flue gas treatment.
钝顶节旋藻在温室中的混合光生物反应器中能够有效地从两股烟道气中捕获 CO。从配方烟道气中，钝顶节旋藻对 CO、NO 和 SO 的吸收率分别为 160.7 mg/L/天、0.73 mg/L/天和 1.56 mg/L/天，所有气体的去除效率均达到 100%。发电机废气也被去除，吸收率分别为 111.4 mg/L/天、0.42 mg/L/天和 0.98 mg/L/天，CO、NO 和 SO 的去除效率分别为 77%、71%和 53%。平均而言，两股烟道气中的 61%的 CO 被同化到微藻生物质中。对于配方烟道气流速超过 100 mL/分钟，最大 CO 吸收率达到 182 mg/L/天。使用 20-L 电凝聚浮选室与沉降器耦合，特定能耗低至 0.27 kWh/kg，可实现 88%的生物质回收。该光生物反应器在没有入侵物种污染或活性下降的情况下运行了将近 7 个月。这对于长期进行烟道气处理来说是一个非常令人鼓舞的结果。
