Results 11 to 20 of about 330,210 (78)

Quaternary ammonium compounds of emerging concern: Classification, occurrence, fate, toxicity and antimicrobial resistance

Journal of Hazardous Materials, 2022
Amplified hygiene and precautionary measures are of utmost importance to control the spread of COVID-19 and future infection; however, these changes in practice are projected to trigger a rise in the purchase, utilisation and hence, discharge of many ...
Sanjeeb Mohapatra, Lin Yutao, S. G. Goh, Charmaine Ng, You Luhua, N. H. Tran, K. Gin   +6 more
semanticscholar   +1 more source

Ammonium Utilization in Microalgae: A Sustainable Method for Wastewater Treatment

Sustainability, 2021
In plant cells, ammonium is considered the most convenient nitrogen source for cell metabolism. However, despite ammonium being the preferred N form for microalgae, at higher concentrations, it can be toxic, and can cause growth inhibition.
G. Salbitani, S. Carfagna
semanticscholar   +1 more source

Quaternary Ammonium Compounds (QACs) and Ionic Liquids (ILs) as Biocides: From Simple Antiseptics to Tunable Antimicrobials

International Journal of Molecular Sciences, 2021
Quaternary ammonium compounds (QACs) belong to a well-known class of cationic biocides with a broad spectrum of antimicrobial activity. They are used as essential components in surfactants, personal hygiene products, cosmetics, softeners, dyes ...
A. Vereshchagin, N. Frolov, K. S. Egorova, M. Seitkalieva, V. Ananikov   +4 more
semanticscholar   +1 more source

Evaluating biochar and its modifications for the removal of ammonium, nitrate, and phosphate in water.

Water Research, 2020
Removal of nitrogen (N) and phosphorus (P) from water through the use of various sorbents is often considered an economically viable way for supplementing conventional methods. Biochar has been widely studied for its potential adsorption capabilities for
Ming Zhang, Ge Song, D. Gelardi, Longbin Huang, Eakalak Khan, O. Mašek, S. Parikh, Y. Ok   +7 more
semanticscholar   +1 more source

Increased Use of Quaternary Ammonium Compounds during the SARS-CoV-2 Pandemic and Beyond: Consideration of Environmental Implications

Environmental Science and Technology Letters, 2020
Quaternary ammonium compounds (QACs) are active ingredients in over 200 disinfectants currently recommended by the U.S. EPA for use to inactivate the SARS-CoV-2 (COVID-19) virus.
Priya I Hora, Sarah G. Pati, P. McNamara, W. Arnold   +3 more
semanticscholar   +1 more source

Excessive ammonium assimilation by plastidic glutamine synthetase causes ammonium toxicity in Arabidopsis thaliana

Nature Communications, 2021
Plants use nitrate, ammonium, and organic nitrogen in the soil as nitrogen sources. Since the elevated CO2 environment predicted for the near future will reduce nitrate utilization by C3 species, ammonium is attracting great interest.
Takushi Hachiya, J. Inaba, Mayumi Wakazaki, Mayuko Sato, K. Toyooka, A. Miyagi, M. Kawai‐Yamada, D. Sugiura, T. Nakagawa, Takatoshi Kiba, A. Gojon, H. Sakakibara   +11 more
semanticscholar   +1 more source

The Emergence of Aqueous Ammonium‐Ion Batteries

Angewandte Chemie, 2021
Aqueous ammonium‐ion (NH4 +) batteries (AAIB) are a recently emerging technology that utilize the abundant electrode resources and the fast diffusion kinetics of NH4 + to deliver an excellent rate performance at a low cost.
Jin Han, A. Varzi, S. Passerini
semanticscholar   +1 more source

Ammonium salts are a reservoir of nitrogen on a cometary nucleus and possibly on some asteroids [PDF]

Science, 2020
Ammonium salts on comet 67P The distribution of carbon and nitrogen in the Solar System is thought to reflect the stability of carbon- and nitrogen-bearing molecules when exposed to the heat of the forming Sun. Comets have a low nitrogen-to-carbon ratio,
O. Poch, I. Istiqomah, E. Quirico, P. Beck, B. Schmitt, P. Theulé, A. Faure, P. Hily-Blant, L. Bonal, A. Raponi, M. Ciarniello, B. Rousseau, S. Potin, O. Brissaud, L. Flandinet, G. Filacchione, A. Pommerol, N. Thomas, D. Kappel, V. Mennella, L. Moroz, V. Vinogradoff, G. Arnold, S. Erard, D. Bockelée-Morvan, C. Leyrat, F. Capaccioni, M. D. De Sanctis, A. Longobardo, F. Mancarella, E. Palomba, F. Tosi   +31 more
semanticscholar   +1 more source

Influence of the parameters of thermal decomposition of ammonium tetravanadate on the processes of phase formation of highly dispersed vanadium oxides.

Trudy Odesskogo Politehničeskogo Universiteta
The peculiarities of the thermal decomposition of the highly dispersed vanadium (IV) ammonium tetrabutanate salt, which is a precursor for the production of nanocrystalline vanadium oxides of different degrees of oxidation (V2O5, VO2), are studied.
Катерина Вікторівна Лускань, Альона Олександрівна Гиренко, Олег Петрович Мисов, Марія Олегівна Савченко, Олександр Павлович Клименко   +4 more
doaj   +4 more sources

Molecular Ratchets and Kinetic Asymmetry: Giving Chemistry Direction

Angewandte Chemie International Edition, Volume 63, Issue 23, June 3, 2024.
Ratcheting is the mechanism by which stochastic molecular dynamics, and other random exchange processes in chemistry, can be directionally biased and driven away from equilibrium. In this Review we discuss the recognition, invention and development of molecular ratchets and kinetic asymmetry, which underpins it.
Stefan Borsley, David A. Leigh, Benjamin M. W. Roberts   +2 more
wiley   +1 more source