Florida Wastewater Practice Test 2025 – Complete Exam Prep

The process in which nitrates are converted into nitrogen gas is known as denitrification. This is an integral part of the nitrogen cycle and occurs primarily in anaerobic conditions, where certain bacteria utilize nitrates as an alternative to oxygen for their metabolic processes. As a result of denitrification, nitrogen gas is released into the atmosphere, effectively removing excess nitrates from the environment and helping to maintain a balance within aquatic and terrestrial ecosystems. This process is critical for preventing the accumulation of nitrates, which can lead to issues such as eutrophication in water bodies.

In contrast, nitrification refers to the conversion of ammonia into nitrites and then into nitrates, while ammonification is the process of decomposing organic matter into ammonia. Mineralization involves the breakdown of organic matter into its inorganic components, including nutrients, which can be taken up by plants. These processes play different roles in the nitrogen cycle, emphasizing the uniqueness of denitrification in the reduction of nitrates back to nitrogen gas.