Results 31 to 40 of about 7,047,605 (374)

Rapid water diffusion at cryogenic temperatures through an inchworm-like mechanism [PDF]

open access: yes, 2021
Water diffusion across the surfaces of materials is of importance to disparate processes such as water purification, ice formation, and more. Despite reports of rapid water diffusion on surfaces the molecular-level details of such processes remain unclear.
arxiv   +1 more source

Reactive oxygen species and catalytic active sites in heterogeneous catalytic ozonation for water purification.

open access: yesEnvironmental Science and Technology, 2020
Heterogeneous catalytic ozonation (HCO) processes have been widely studied for water purification. The reaction mechanisms of these processes are very complicated because of the simultaneous involvement of gas, solid and liquid phases.
Guang Yu   +4 more
semanticscholar   +1 more source

Enhanced coagulation of covalent composite coagulant with potassium permanganate oxidation for algae laden water treatment: Algae and extracellular organic matter removal

open access: yesChemical Engineering Journal Advances, 2023
The enhanced coagulation performance for algae and extracellular organic matter (EOM) removal by using novel Al/Fe-based covalently bonded composite coagulants (CAFM) coupled with potassium permanganate oxidation was evaluated in the current study.
Jiangya Ma   +7 more
doaj  

Solar-assisted membrane technology for water purification: a review

open access: yesWater Reuse, 2021
A shortage of safe drinking water is one of the leading problems in the world. Even in developed countries where water treatment systems are present, safe drinking water may not be always available due to the limitations of advanced water treatment ...
Tsegahun Mekonnen Zewdie   +3 more
doaj   +1 more source

Conventional and contemporary methods for water treatment: From wastewater to ultra pure water [PDF]

open access: yesHemijska Industrija, 2003
In this paper modern methods and techniques for water purification are described. Good water quality and the rational use of water are an absolute need of the new millennium. The quality of life depends on water quality.
Rajaković Vladana N.   +1 more
doaj   +1 more source

Chromium (VI) Adsorption on Modified Activated Carbons

open access: yesApplied Sciences, 2019
The paper presents the research of adsorptive properties of activated carbons to chromium (VI) removal from the water solution. Different types of carbon were investigated: WD-ekstra (WDA), WD-ekstra modified by salt acid WD(HCl) and nitrogen acid WD ...
Alicja Puszkarewicz, Jadwiga Kaleta
doaj   +1 more source

A Scintillator Purification System for the Borexino Solar Neutrino Detector [PDF]

open access: yesNucl.Instrum.Meth.A587:277-291,2008, 2007
Purification of the 278 tons of liquid scintillator and 889 tons of buffer shielding for the Borexino solar neutrino detector was performed with a system that combined distillation, water extraction, gas stripping and filtration. The purification of the scintillator achieved unprecedented low backgrounds for the large scale liquid scintillation ...
arxiv   +1 more source

Removal of organic compounds from natural underground water in sorption and sono-sorption processes on selected activated carbons

open access: yesE3S Web of Conferences, 2017
The article rated removal efficiency of organic matter in the processes of sorption and sono-sorption of underground water grasped for municipal purposes.
Pietrzyk Andżelika, Papciak Dorota
doaj   +1 more source

Mathematical multi-scale model of water purification [PDF]

open access: yesarXiv, 2022
In this work we consider a mathematical model of the water treatment process and determine the effective characteristics of this model. At the microscopic length scale we describe our model in terms of a lattice random walk in a high-contrast periodic medium with absorption.
arxiv  

Structure and Chemistry of Graphene Oxide in Liquid Water from First Principles [PDF]

open access: yesNature Communications, 2020, 11, 1566, 2019
Graphene oxide is a rising star among 2D materials, yet its interaction with liquid water remains a fundamentally open question: experimental characterization at the atomic scale is difficult, and modelling by classical approaches cannot properly describe chemical reactivity.
arxiv   +1 more source

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