Department of Chemical Engineering and Environmental Technology, School of Industrial Engineerings, Valladolid University, Dr. Mergelina, s/n, 47011 Valladolid, Spain; Universidad Pedagógica Nacional Francisco Morazán, Boulevard Centroamérica, Tegucigalpa, Honduras.
Department of Chemical Engineering and Environmental Technology, School of Industrial Engineerings, Valladolid University, Dr. Mergelina, s/n, 47011 Valladolid, Spain.
Bioresour Technol. 2018 May;255:354-358. doi: 10.1016/j.biortech.2018.01.136. Epub 2018 Feb 2.
The influence of the daily and seasonal variations of environmental conditions on the quality of the upgraded biogas was evaluated in an outdoors pilot scale high rate algal pond (HRAP) interconnected to an external absorption column (AC) via a conical settler. The high alkalinity in the cultivation broth resulted in a constant biomethane composition during the day regardless of the monitored month, while the high algal-bacterial activity during spring and summer boosted a superior biomethane quality. CO concentrations in the upgraded biogas ranged from 0.1% in May to 11.6% in December, while a complete HS removal was always achieved regardless of the month. A limited N and O stripping from the scrubbing cultivation broth was recorded in the upgraded biogas at a recycling liquid/biogas ratio in the AC of 1. Finally, CH concentration in the upgraded biogas ranged from 85.6% in December to 99.6% in August.
在户外中试规模的高负荷藻类塘（HRAP）中，通过锥形沉降器与外部吸收塔（AC）相连，评估了环境条件的日变化和季节变化对升级沼气质量的影响。培养物中的高碱度导致白天的生物甲烷组成始终保持不变，而春夏季高的藻类-细菌活性则提高了生物甲烷的优异质量。升级沼气中的 CO 浓度范围从 5 月的 0.1%到 12 月的 11.6%，而无论哪个月，HS 的去除总是完全的。在 AC 中的循环液体/沼气比为 1 时，升级沼气中从洗涤培养物中去除的氮和氧有限。最后，升级沼气中的 CH 浓度范围从 12 月的 85.6%到 8 月的 99.6%。
