Which organic compound, also known as skatole, has a fecal odour?

Skatole is an organic compound that is indeed associated with a fecal odor. It is a naturally occurring compound that is produced during the breakdown of the amino acid tryptophan by bacteria in the intestines and is often found in various fecal matter. Skatole is primarily characterized by its intense smell, widely recognized as unpleasant and reminiscent of feces.

The significance of skatole in wastewater treatment plants lies in its contribution to odor issues when organic matter is decomposed. Effective wastewater treatment processes must manage and mitigate odors, making it essential for operators to understand compounds like skatole and their sources.

In contrast, while indole also has a similar source and odor due to being related chemically to skatole, it is distinct and generally has a less potent smell. Mercaptans are sulfur-containing compounds that can also contribute to unpleasant odors, but they are different in structure and characteristics from skatole. Lastly, caproic acid, despite having a strong odor, is associated with rancid or unpleasant fatty scents rather than fecal odors specifically.

Understanding the properties and origins of these compounds assists wastewater treatment professionals in addressing odor control challenges effectively.