Results 51 to 60 of about 1,770 (212)

Long solids retention times and attached growth phase favor prevalence of comammox bacteria in nitrogen removal systems [PDF]

Water Research, 2019
ABSTRACTThe discovery of the complete ammonia oxidizing (comammox) bacteria overturns the traditional two-organism nitrification paradigm which largely underpins the design and operation of nitrogen removal during wastewater treatment. Quantifying the abundance, diversity, and activity of comammox bacteria in wastewater treatment systems is important ...
Irmarie Cotto, Zihan Dai, Linxuan Huo, Christopher L. Anderson, Katherine J. Vilardi, Umer Ijaz, Wendell Khunjar, Christopher Wilson, Haydee De Clippeleir, Kevin Gilmore, Erika Bailey, Ameet J. Pinto   +11 more
openaire   +2 more sources

Effects of straw returning combined with earthworm addition on nitrification and ammonia oxidizers in paddy soil

Frontiers in Microbiology, 2022
IntroductionSoil ammonia oxidation, which acts as the first and rate-limiting step of nitrification, is driven by ammonia-oxidizing bacteria (AOB), ammonia-oxidizing archaea (AOA) and complete ammonia oxidizer (comammox, amoA gene of clade-A and clade-B).
Xiangqian Chu, Xiangqian Chu, Naling Bai, Naling Bai, Xianqing Zheng, Xianqing Zheng, Quanhua Wang, Xi Pan, Shuangxi Li, Shuangxi Li, Juanqin Zhang, Juanqin Zhang, Haiyun Zhang, Haiyun Zhang, Wenjie He, Feng Zhong, Weiguang Lv, Weiguang Lv, Hanlin Zhang, Hanlin Zhang, Hanlin Zhang   +20 more
doaj   +1 more source

Co-Occurrence and Cooperation between Comammox and Anammox Bacteria in a Full-Scale Attached Growth Municipal Wastewater Treatment Process

Environmental Science & Technology, 2022
ABSTRACTCooperation between comammox and anammox bacteria for nitrogen removal has been recently reported in laboratory-scale systems including synthetic community construct; however, there are no reports of full-scale municipal wastewater treatment systems with such cooperation.
Katherine Vilardi, Irmarie Cotto, Megan Bachmann, Mike Parsons, Stephanie Klaus, Christopher Wilson, Charles Bott, Kelsey Pieper, Ameet Pinto   +8 more
openaire   +2 more sources

Niche differentiation and symbiotic association among ammonia/nitrite oxidizers in a full-scale rotating biological contactor

, 2022
Although the distribution of ammonia/nitrite oxidizers had been profiled in different habitats, current understanding is still limited regarding their niche differentiation in the integrated biofilm reactors, the symbiotic associations of ammonia/nitrite
Chen, Yiqiang, Liu, Lei, Wang, Chunxiao, Wang, Dou, Wang, Yubo, Wang, Yulin, Xu, Xiaoqing, Yang, Yu, Zhang, Tong   +8 more
core   +2 more sources

Flow-cytometric quantification of microbial cells on sand from water biofilters [PDF]

, 2018
Rapid quantification of absolute microbial cell abundances is important for a comprehensive interpretation of microbiome surveys and crucial to support theoretical modelling and the design of engineered systems.
Davenport, Russell J., Hammes, Frederik, King, Lianna C., Vignola, Marta, Werner, David   +4 more
core   +1 more source

Survival strategy of comammox bacteria in a wastewater nutrient removal system with sludge fermentation liquid as additional carbon source

Science of The Total Environment, 2022
Complete ammonia oxidizing (comammox) bacteria are frequently detected in wastewater biological nutrient removal (BNR) systems. This study identified "Candidatus Nitrospira nitrosa"-like comammox bacteria as the predominant ammonia oxidizers (97.5-99.4%) in a lab-scale BNR system with acetate and sludge fermentation liquid as external carbon sources ...
Xu, Shaoyi, Chai, Wenbo, Xiao, Rui, Smets, Barth F., Palomo, Alejandro, Lu, Huijie   +5 more
openaire   +3 more sources

Impact of comammox process on membrane-aerated biofilm reactor for autotrophic nitrogen removal

Water Research X
This study compared the simulation results of the side-stream membrane-aerated biofilm reactor (MABR) in terms of total nitrogen (TN) removal and N2O production obtained by the conventional comammox-exclusive biological nitrogen removal (BNR) model and ...
Jiaying Hou, Ying Zhu, Fangang Meng, Bing-Jie Ni, Xueming Chen   +4 more
doaj   +1 more source

Nutrient cycling potential within microbial communities on culturally important stoneworks [PDF]

, 2018
Previous studies on microbes associated with deterioration of cultural heritage (CH) stoneworks have revealed a diverse microbiota adapted to stresses such as low nutrients, aridity and high salinity, temperatures and radiation.
May, Eric, Murrell, J. Colin, Purdy, Kevin J., Zanardini, Elisabetta   +3 more
core   +3 more sources

Nanocomposite Reduces Volatile and Aqueous Reactive Nitrogen Losses From Soil Compared to Conventional and Alternative Fertilisers

Journal of Sustainable Agriculture and Environment, Volume 5, Issue 1, March 2026.
ABSTRACT Reactive nitrogen losses from agriculture contribute substantially to greenhouse gas emissions, water pollution and ecosystem degradation. Controlled‐release fertiliser technologies offer potential solutions, yet few comprehensively evaluate performance across multiple nitrogen loss pathways and soil types.
Jessica Chadwick, Jingyi Shi, Megan L. Purchase, Peng Zhang, Iseult Lynch, Sami Ullah, Deying Wang, Ryan M. Mushinski   +7 more
wiley   +1 more source

Light-weight oxygen supply for portable biological nitrogen removal from urine and sweat

Chemical Engineering Journal Advances, 2022
The weight or availability of potable water often limits foot travel into remote arid regions for recreational, or government-sponsored activities. To address this limitation, a portable bioprocessing unit, intended to be one treatment stage in the ...
Raymond RedCorn, Jacob R. Lamb, Ekaterina Gottshall, David A. Stahl, Mari K.H. Winkler   +4 more
doaj   +1 more source