Free nitrous acid (FNA), the protonated form of nitrite, has historically been an unwanted
substance in wastewater systems due to its inhibition on a wide range of microorganisms …

Oxidation of ammonium to nitrite rather than nitrate, ie, nitritation, is critical for autotrophic
nitrogen removal. This study demonstrates a robust nitritation process in treating low …

Abstracts The incomplete denitrification due to insufficient carbon resource in the
wastewater treatment plants (WWTPs) resulted in low nitrogen removal efficiency, which has …

Recycling nutrients (nitrogen, phosphorus, and potassium) from human urine can potentially
offset more than 13% of global agricultural fertilizer demand. Biological nitrification is a …

Anaerobic ammonium oxidation (anammox) poses an emerging research field as it can
outstand previous processes of biological wastewater treatment in terms of efficiency and …

In this study, polyvinyl alcohol (PVA) gel beads were used to aid the partial nitrification and
anammox process (PN/A) for treating low-strength ammonia wastewater. When treating …

The potentials of using endogenous free ammonia (FA) and free nitrous acid (FNA) as
nitrous oxide (N 2 O) mitigators were investigated in treatment of both mainstream and …

Recent studies have shown that free nitrous acid (FNA, ie, HNO 2) is biocidal to many
microorganisms, promoting the development of FNA-based technology in biological …

Black-odor water pollution in rural areas, especially swine wastewater, can lead to the
deterioration of water quality and thus seriously affect the daily life of people in the area …

Nitrogen (N) recovery from urine wastewater has been an important route to overcome
intensive energy consumption in the conventional N-removal process. Hereby, this study …