Results 1 to 10 of about 5,681,212 (125)

Chemical Cleaning and Membrane Aging in MBR for Textile Wastewater Treatment [PDF]

Membranes, 2022
Membrane bioreactors have been widely used in textile wastewater treatment. Intensive chemical cleaning is indispensable in the MBR for textile wastewater treatment due to the severe membrane fouling implied.
Huarong Yu, Siyuan Shangguan, Chenyu Xie, Haiyang Yang, Chunhai Wei, Hongwei Rong, Fangshu Qu   +6 more
doaj   +3 more sources

Effect of Carbonate Source on the Dehydrofluorination Process in Polyvinylidene Fluoride/Alkali Metal Carbonate Composites. [PDF]

ACS Omega, 2023
In this paper, Raman and X-ray photoelectron spectroscopies were applied to analyze compositional and structural variations of the generated activated carbon (AC), as induced by changing carbonate source in three different types of systems, PVDF/M2CO3 (M
Zhu W, Okada K, Hoshida N, Yoshida Y, Martucci A, Zhu J, Marin E, Pezzotti G.   +7 more
europepmc   +3 more sources

Analysis of the chemical behavior at the molecular level of lined pipes with fluoropolymers in a sodium hypochlorite production line/bibliographic review

SN Applied Sciences, 2022
Article Highlights Why is the dehydrofluorination process generated in fluoropolymers, how does it affect it and when does it start. Chemical compatibility of each material under review such as Polyvinylidene Fluoride, Ethylene Tetrafluoroethylene ...
Andrea Angelica Beleño Rosero, Leonel Pareja Rodríguez, Luis Fernando Andrade Fonseca   +2 more
doaj   +1 more source

The contrastive study of chemical treatment on the properties of hydrophobic PVDF membrane

Journal of Applied Science & Process Engineering, 2015
In this study, polyvinylidene fluoride (PVDF) flat membranes were treated with potassium hydroxide (KOH), sodium hydroxide (NaOH) and sodium hypochlorite (NaOCl).
Mohamad Fairus Rabuni
doaj   +1 more source

Molecular structure of chemically carbonized poly (vinylidene fluoride) films (IR-spectroscopy data)

Известия Томского политехнического университета: Инжиниринг георесурсов, 2018
The relevance of the research is caused by the importance of elaboration and improvement of the carbon-based nanomaterials synthesis technique. Synthesis of a chain-like carbon and study of its properties are of fundamental interest for experimental ...
Vladimir E. Zhivulin, Dmitriy A. Zherebtsov, Leonid A. Pesin   +2 more
doaj   +2 more sources

Kinetics of paramagnetic centers decrease at ageing of chemically carbonized derivatives of poly vinylidene fluoride

Известия Томского политехнического университета: Инжиниринг георесурсов, 2019
Relevance of the work. One of the future problems facing modern science is the synthesis and study of the properties of low-dimensional and nanoscale materials based on carbon.
Vladimir Evgenievich Zhivulin, Natal'ya Aleksandrovna Zlobina, Leonid Abramovich Pesin   +2 more
doaj   +2 more sources

Influence of isothermal heat-treatment duration on magnetic and structural properties of chemically carbonized poly (vinylidene fluoride) derivatives

Известия Томского политехнического университета: Инжиниринг георесурсов, 2019
Relevance of the work: Modern science and technology show interest to use of low-dimensional and nanodimensional materials based on carbon. One of the most prospective materials for synthesis of similar structures is poly (vinylidene fluoride).
Vladimir Zhivulin, Leonid Pesin, Olga Mezhenina, Igor Kovalyov, Natalia Zlobina, Mikhail Gavrilov, Viktoriya Morilova, Olga Koryakova   +7 more
doaj   +2 more sources

Lifetime prediction and degradation assessment of FKM and FFKM O-rings under high temperature thermo-oxidative ageing

Polymer Testing
To support the development of solar reactor technologies for hydrogen production, this study investigates the thermo-oxidative degradation mechanisms of fluorinated elastomers and predicts their lifetimes at high temperatures (200–300 °C) consistent with
Estefanía Vega Puga, Volker Wachtendorf, Anja Kömmling, Stefan Brendelberger, Matthias Jaunich, Christian Sattler   +5 more
doaj   +1 more source

Primary, secondary, tertiary, and quaternary Alkyl amine-functionalized PVDF membranes for DBSA removal

Frontiers in Membrane Science and Technology
Water remediation has become increasingly critical over recent decades due to the growing discharge of surfactant-containing wastewater into the environment.
Hadi Rouhi, Steven T. Weinman
doaj   +1 more source

ESR Studies of Chemically Dehydrofluorinated Poly(vinylidene fluoride)

Magnetic Resonance in Solids. Electronic Journal, 2008
X-band ESR of chemically dehydrofluorinated poly(vinylidene fluoride) films has been studied in the 150 ÷ 375 K temperature range. Dehydrofluorinated films reveal an ESR signal with g-factor close to that of the free electron. The ESR parameters (integral intensity, width, g-factor) of the samples depend on duration of the chemical reaction, storage ...
Mavrinskaya, N., Pesin, L., Baumgarten, M., Mavrinskiy, A., Baitinger, E., Evsyukov, S.   +5 more
openaire   +2 more sources