Results 51 to 60 of about 707 (136)

Effect of Internal Recycle Ratio on Nitrogen Removal Efficiency in a Three-stage ANAMMOX Process for Treating Reject Water

대한환경공학회지, 2020
Objectives In order to improve the stability of the ANAMMOX process, a three-stage ANAMMOX process combined with denitritation/nitritation process was operated, and effect of internal recycle ratio on the nitrogen removal efficiency was investigated ...
Daehee Choi, Wonsang Yun, Dongjin Ju, Jinyoung Jung   +3 more
doaj   +1 more source

Impacts of Climate Change on Groundwater Quality in the Northern Atlantic Coastal Plain: A Review

JAWRA Journal of the American Water Resources Association, Volume 62, Issue 3, June 2026.
ABSTRACT This review integrates hydrogeological and geochemical processes to assess the impacts of climate change on groundwater quality in the Northern Atlantic Coastal Plain (NACP). Projected changes in air temperature, precipitation, and sea‐level rise are expected to influence groundwater recharge, discharge, storage, and seawater intrusion in ...
Zahid Aziz, Nicholas A. Procopio
wiley   +1 more source

Oxygen tolerance and detoxification mechanisms of highly enriched planktonic anaerobic ammonium-oxidizing (anammox) bacteria

ISME Communications, 2023
Oxygen is a key regulatory factor of anaerobic ammonium oxidation (anammox). Although the inhibitory effect of oxygen is evident, a wide range of oxygen sensitivities of anammox bacteria have been reported so far, which makes it difficult to model the ...
Satoshi Okabe, Shaoyu Ye, Xi Lan, Keishi Nukada, Haozhe Zhang, Kanae Kobayashi, Mamoru Oshiki   +6 more
doaj   +1 more source

Microplastic addition has no detectable effect on ecosystem metabolism or diel dinitrogen flux in a large in‐lake mesocosm experiment under oligotrophic conditions

Limnology and Oceanography, Volume 71, Issue 5, May 2026.
Abstract Ecosystem metabolism (e.g., gross primary production [GPP], respiration [R], and net ecosystem production) integrates the activity of aerobic organisms and is an indicator of environmental change. Microplastics (i.e., particles 1–5 mm) are widespread in freshwater ecosystems and are colonized by biofilms and other organisms.
Raúl F. Lazcano, Emily Johnson, Scott Higgins, Kennedy Bucci, Rachel McNamee, Cody Veneruzzo, Desiree Langenfeld, Diane M. Orihel, Michael D. Rennie, Matthew Hoffman, Michael Paterson, Jennifer F. Provencher, Chelsea M. Rochman, Timothy J. Hoellein   +13 more
wiley   +1 more source

Life after death in the pelagic: Non‐predatory zooplankton mortality and the “ghost carbon pump”

Limnology and Oceanography Letters, Volume 11, Issue 3, May 2026.
Abstract The biological carbon pump is traditionally framed as a trophically mediated process in which zooplankton mortality is attributed mainly to predation, routing carbon through fecal pellets and higher trophic levels before export. Increasing evidence, however, shows that nonpredatory mortality—caused by different environmental stressors—accounts
Albert Calbet
wiley   +1 more source

Understanding the factors (salinity, nitrate, and carbon availability) and mechanisms that control N2O products and nitrate removal patterns in inland saline farmland ditches

Vadose Zone Journal, Volume 25, Issue 3, May/June 2026.
Abstract Denitrification, the microbial process by which nitrate (NO3−) in aquatic systems is converted to N2 and N2O, is widely recognized as an effective and environmentally friendly method for mitigating NO3− pollution in water bodies. However, the complex role of salinity, which could significantly influence the denitrification process, in salt ...
Junhan Zhao, Dongli She, Yongchun Pan, Zhenqi Shi, Alimu Abulaiti, Shenhao Qu, Lei Hu   +6 more
wiley   +1 more source

Blue Nitrogen: Global Rates and Economic Importance

Earth's Future, Volume 14, Issue 5, May 2026.
Abstract Nitrogen (N) pollution drives widespread coastal ecosystem collapse. In this paper, we argue that mangrove forests represent an undervalued natural mitigation solution for N pollution. By performing a comprehensive global meta‐analysis, we reveal that mangroves remove 870 Gg N annually, which represents an economic value reaching $8.7 billion ...
Ziyan Wang, Benoit Thibodeau
wiley   +1 more source

Hardness Toxicity and Multi‐Route, Multi‐Demographic Health Risks of Nitrate‐Contaminated Groundwater: A Call for Sustainable Environmental and Public Health Protection

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Groundwater contamination by nitrate and hardness poses critical challenges to environmental sustainability and public health across many regions. This research pioneers an integrated assessment of nitrate multi‐route exposure for six‐age groups and hardness toxicity in Ghana.
Johnson C. Agbasi, Mahamuda Abu, Krishna Prakash Arunachalam, Abdullahi G. Usman, Sani I. Abba, Johnbosco C. Egbueri   +5 more
wiley   +1 more source

Fate of dissolved organic nitrogen during the Anammox process using ultra-high resolution mass spectrometry

Environment International, 2019
Anaerobic ammonium oxidation (Anammox) is a cost-effective process for treating highly nitrogenous wastewater. However, the fate of organic nitrogen during Anammox treatment is still unclear, which limits its practical application.
Li Zhang, Yongzhen Peng, Zheng Ge, Kechen Xu   +3 more
doaj   +1 more source

Acetogenic Methane‐Carbon Monoxide Comproportionation: An Exergonic but Unobserved Microbial Metabolism

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Microbial metabolism relies on redox reactions that exploit chemical disequilibria. While aerobic carbon oxidation, carbon fixation, and fermentation are well studied, the broader space of anaerobic carbon redox reactions remains underexplored.
Heidi S. Aronson, William D. Leavitt, Douglas E. LaRowe   +2 more
wiley   +1 more source