Biosystems Engineering, Faculty of Agriculture, Bursa Uludag University, Bursa, Turkey.
Biosystems Engineering, Faculty of Engineering-Architecture, Yozgat Bozok University, Yozgat, Turkey.
Environ Technol. 2024 Nov;45(27):5899-5911. doi: 10.1080/09593330.2024.2311082. Epub 2024 Feb 7.
While global population growth drives increased production efficiency in animal agriculture, there is a growing demand for environmentally friendly practices, particularly in reducing air pollutant emissions from concentrated animal feeding operations. This study explores the potential of cultivating microalgae in photobioreactors (PBRs) as an eco-friendly and cost-effective approach to mitigate NH and CO emissions from pig barns. Unlike traditional physicochemical mitigation systems, microalgae offer a renewable solution by converting pollutants into valuable biomass. The research focused on growth under typical NH and CO concentrations found in the indoor air of pig barns. Four NH (0, 12, 25, and 50 ppm) and four CO concentrations (350, 1200, 2350, and 3500 ppm) were tested using photobioreactors. Results showed a maximum specific growth rate of 0.83 d with 12 ppm NH and 3500 ppm CO. The dry biomass concentration was significantly higher (1.16 ± 0.08 g L; < 0.01) at 25 ppm NH and 2350 ppm CO than other test conditions. demonstrated the peak NH and CO fixation rates (23.8 ± 2.26 mg NH L d and 432.24 ± 41.09 mg CO L d) at 25 ppm NH and 2350 ppm CO. These findings support the feasibility of using algae to effectively remove air pollutants in pig barns, thereby improving indoor air quality.
虽然全球人口增长推动了动物农业生产效率的提高，但人们对环保实践的需求日益增长，特别是在减少集中式动物饲养场的空气污染物排放方面。本研究探讨了在光生物反应器 (PBR) 中培养微藻作为一种环保且具有成本效益的方法来减少猪舍中 NH 和 CO 排放的潜力。与传统的物理化学缓解系统不同，微藻提供了一种可再生的解决方案，可将污染物转化为有价值的生物质。该研究的重点是在猪舍室内空气中发现的典型 NH 和 CO 浓度下的生长情况。使用光生物反应器测试了四个 NH（0、12、25 和 50 ppm）和四个 CO 浓度（350、1200、2350 和 3500 ppm）。结果表明，在 12 ppm NH 和 3500 ppm CO 下的最大比生长速率为 0.83 d。在 25 ppm NH 和 2350 ppm CO 下的干生物量浓度明显更高（1.16±0.08 g L； < 0.01）。在 25 ppm NH 和 2350 ppm CO 下，表现出最高的 NH 和 CO 固定速率（23.8±2.26 mg NH L d 和 432.24±41.09 mg CO L d）。这些发现支持了使用藻类有效去除猪舍空气污染物从而改善室内空气质量的可行性。
