The long-terms effects of different crystal-composition TiO 2 nanoparticles (NPs) on nitrogen-
cycle-related functional guilds in activated sludge remain unclear, especially under natural …

Ammonia-oxidizing bacteria (AOB) and archaea (AOA) are two distinct ammonia-oxidizing
microorganisms (AOMs) responsible for nitrification in wastewater treatment plants …

A novel internal circulation contact oxidation membrane bioreactor (ICCOMBR) was
constructed to investigate a three steps startup strategy of single-stage partial nitritation …

Most anaerobically digested wastewaters have high concentrations of suspended solids,
while little is known about whether they adversely affect the performance of the autotrophic …

The cytotoxicity of titanium dioxide nanoparticles (TiO 2 NPs) to microorganisms has
attracted great attention over the past few decades. As an important participator in the …

The extensive use of nano-TiO 2 has caused concerns regarding their potential
environmental risks. However, the stress responses and self-recovery potential of nitrogen …

Similar to denitrification and anaerobic ammonium oxidation (anammox) processes,
dissimilatory nitrate reduction to ammonium (DNRA) is widely distributed in natural …

Nitrification is known as one of the most sensitive processes affected when activated sludge
is exposed to antimicrobial silver nanoparticles (AgNPs). The impact of AgNPs and their …

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 …

Soils are facing new environmental stressors, such as titanium dioxide nanoparticles (TiO2-
NPs). While these emerging pollutants are increasingly released into most ecosystems …