The carbon source is essential as an electron donor in the heterotrophic denitrification
process. When there is a lack of organic carbon sources in the system, an external carbon …

Abstract Nitrate (NO 3−) pollution in water and wastewater has become a serious global
issue. Biological denitrification, which reduces NO 3− to N 2 (nitrogen gas) by denitrifying …

Water contamination is a growing environmental issue. Several harmful effects on human
health and the environment are attributed to nitrogen contamination of water sources …

Biochemical oxidation and reduction are the principle of biological water and wastewater
treatment, in which electron donor and/or acceptor shall be provided. Elemental sulfur (S 0) …

The novel biological nitrogen removal process has been extensively studied for its high
nitrogen removal efficiency, energy efficiency, and greenness. A successful novel biological …

Nitrogen removal through microorganisms is the most important pathway in constructed
wetlands (CWs). In this review, we summarize the microbial coupling mechanisms of …

Anoxic ammonium oxidation (anammox) is an energy-efficient nitrogen removal process for
wastewater treatment. However, the unstable nitrite supply and residual nitrate in the …

Elemental sulfur (S 0) is known to be an abundant, non-toxic material with a wide range of
redox states (-2 to+ 6) and may serve as an excellent electron carrier in wastewater …

Nitrogen (N) pollution has emerged as one of the major threat to global sustainable
development and has received increasing attention. Manganese (Mn) is the third most …

Abstract Elemental sulfur (S 0)-based autotrophic denitrification (SAD) has gained intensive
attention in the treatment of secondary effluent for its low cost, high efficiency, and good …