Results 91 to 100 of about 15,858 (222)

Microbial nitrogen removal and recycling in the redox transition zone of a meromictic lake and its coupling to sulfur cycling

Limnology and Oceanography, Volume 71, Issue 1, January 2026.
Abstract Organotrophic denitrification is an important nitrogen (N) removal process in lakes, but alternative N reduction processes such as lithotrophic sulfur (S)‐oxidizing denitrification may be greatly underappreciated. We studied the redox transition zone (RTZ) in the meromictic water column of the North Basin of Lake Lugano (Switzerland) to ...
Jana Tischer, Moritz F. Lehmann, Guangyi Su, Fabio Lepori, Jakob Zopfi   +4 more
wiley   +1 more source

Characterization of acid-tolerant ammonia-oxidizing Nitrosospira bacteria suggests wide implementation of the acidic nitritation process

Water Research X
Acidic activated sludge process has been recently developed for the suppression of nitrite-oxidizing bacteria, addressing the bottleneck in achieving robust partial nitritation (PN) for low-strength ammonia wastewater treatment.
Zhetai Hu, Xiaotong Cen, Zhiyao Wang, Min Zheng   +3 more
doaj   +1 more source

The Isolation of Nitrosomonas europaea in Pure Culture [PDF]

Journal of General Microbiology, 1950
SUMMARY: Nitrosomonas europaea (Winogradsky) was isolated in pure culture from Rothamsted soil. The method used entailed: (1) building up the population of nitrifiers in enrichment cultures; (2) removal of the cells from the chalk in an enriched culture with a stream of carbon dioxide; (3) picking colonies from poured silica gel plates.
openaire   +2 more sources

Dynamics and Eco‐Genomics of Baltic Sea Nitrifiers: Seasonality, Niches, Interactions and Genomic Uniqueness

Environmental Microbiology, Volume 28, Issue 1, January 2026.
Nitrifiers in the Baltic Sea show persistent abundance in aphotic waters and late‐fall to winter photic zone increases positively correlated with nutrients and negatively with light and chlorophyll. Through selective enrichment, five novel ammonia‐oxidising archaea genomes were recovered, including the dominant aphotic taxon, which revealed overall ...
Sukki Sookyoung Kim, Elisa D'Agostino, David M. Needham   +2 more
wiley   +1 more source

Contribution of nitrification and denitrification to N2O emissions from urine patches [PDF]

, 2007
Urine deposition by grazing livestock causes an immediate increase in nitrous oxide (N2O) emissions, but the responsible mechanisms are not well understood. A nitrogen-15 (15N) labelling study was conducted in an organic grass-clover sward to examine the
Allen, Ambus, Ambus, Bateman, Bergsma, Bol, Clough, Clough, Conrad, Crutzen, Davidson, De Klein, De Klein, Firestone, Glatzel, Grundmann, Harada, Hutchinson, Kester, Koops, Kyveryga, Mathieu, Mette S. Carter, Monaghan, Monaghan, Mosier, Okereke, Panek, Petersen, Poth, Robertson, Ryden, Schmidt, Shand, Sherlock, Simek, Stevens, Stevens, Stevens, Sørensen, Thomas, Tiedje, Van Groenigen, Weier, Whitehead, Williams, Wrage, Wrage, Wrage, Yamulki, Yoshida   +50 more
core   +1 more source

Nitrogen Cycling Under Conifer‐to‐Broadleaf Forest Conversion in Eastern England

European Journal of Soil Science, Volume 77, Issue 1, January–February 2026.
ABSTRACT In the early 20th century, political focus on timber production in Europe led to extensive afforestation and replacement of broadleaves with often non‐native coniferous species. Recent interest in the reverse has risen due to recognition of the wider ecosystem services delivered by forests, such as water quality improvement.
Caitlin Lewis, Elena Vanguelova, Matthew Ascott, Lucie Jerabkova, Joshua Deakins, Martin Lukac   +5 more
wiley   +1 more source

Enhanced nitrogen removal via SNAD-IFAS process treating THP-AD liquor: microbial community and co-metabolism mechanism

npj Clean Water
The anaerobic digester liquor after thermal hydrolysis pretreatment (THP-AD liquor) is a highly hazardous wastewater containing high concentration of ammonium.
Xiaochen Xu, Xiao Feng, Weichun Gao, Fenglin Yang, Bing Liu, Chao Wang   +5 more
doaj   +1 more source

Primjena mikroorganizama u procesima uklanjanja dušikovih spojeva iz otpadnih voda [PDF]

Kemija u Industriji
Biološko uklanjanje dušikovih spojeva uporabom mikroorganizama ključan je proces u mnogim postrojenjima za pročišćavanje otpadnih voda. Iznimno korisnim u uklanjanju dušikovih spojeva pokazali su se predstavnici amonijak oksidirajućih bakterija i arheja ...
Maja Mitrović, Tonči Rezić
doaj   +1 more source

Recovering partial nitritation in a PN/A system during mainstream wastewater treatment by reviving AOB activity after thoroughly inhibiting AOB and NOB with free nitrous acid

Environment International, 2020
Starting up or recovering partial nitritation is a major challenge for achieving or maintaining stable partial nitritation/anammox (PN/A) during mainstream wastewater treatment.
Bo Wang, Zenghua Wang, Shanyun Wang, Xin Qiao, Xiaofei Gong, Qingteng Gong, Xuefan Liu, Yongzhen Peng   +7 more
doaj   +1 more source

Microbial ecosystem constructed in water for successful organic hydroponics [PDF]

, 2008
Conventional hydroponics systems generally use only chemical fertilisers, not organic ones, since there are no microbial ecosystems present in such systems to mineralise organic compounds to inorganic nutrients.
Hiromi Ohmori, Makoto Shinohara, Yoichi Uehara   +2 more
core   +1 more source