Department of Engineering, Faculty of Science and Technology, Aarhus University, Tjele, Denmark.
J Agric Food Chem. 2012 Mar 14;60(10):2599-606. doi: 10.1021/jf300182c. Epub 2012 Mar 6.
There is an urgent need to develop odor reduction technologies for animal production facilities, and this requires a reliable measurement technique for estimating the removal of odorants. The purpose of the present experiment was to investigate the application of proton-transfer-reaction mass spectrometry (PTR-MS) for continuous measurements at a biofilter from SKOV A/S installed at a pig production facility. PTR-MS was able to handle the harsh conditions with high humidity and dust load in a biofilter and provide reliable data for the removal of odorants, including the highly odorous sulfur compounds. The biofilter removed 80-99% of carboxylic acids, aldehydes, ketones, phenols, and indoles and ca. 75% of hydrogen sulfide. However, only ~0-15% of methanethiol and dimethyl sulfide was removed. In conclusion, PTR-MS is a promising tool that can be used to improve the development of biological air cleaning and other odor reduction technologies toward significant odorants.
目前迫切需要开发用于动物生产设施的除臭技术，这需要一种可靠的测量技术来估算臭气的去除率。本实验的目的是研究质子转移反应质谱（PTR-MS）在安装于养猪场的 SKOV A/S 生物过滤器上进行连续测量的应用。PTR-MS 能够处理生物过滤器中高湿度和灰尘负荷等恶劣条件，并为臭气，包括高臭味的硫化合物的去除提供可靠的数据。生物过滤器去除了 80-99%的羧酸、醛、酮、酚和吲哚，以及约 75%的硫化氢。然而，只有约 0-15%的甲硫醇和二甲基硫被去除。总之，PTR-MS 是一种很有前途的工具，可用于改进生物空气净化和其他针对重要臭气的除臭技术的开发。
