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Acid Green - Europe PMC

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Last Updated: 10 November 2022

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Metal-Polyphenol Coordination at the Aqueous Contra-diffusion "Interface": A Green Way to High-Performance Iron(III)/Tannic Acid Thin-Film-Composite Nanofiltration Membranes.

Thin-film-composite nanofiltration membranes have found wide use in environmental remediation and industrial separation. Hence, the aqueous manufacture of TFC membranes as a green and sustainable process is attracting significant attention. The pre-diffusion process gives the film construction within a narrow region by limiting the competition between precursor diffusion and interfacial reactions. TFC membranes were produced herein, Fe 3+ /tannic acid TFC membranes were produced by a contra-diffusion process. The effects of fabrication parameters on the Fe 3+/TA TFC membrane microstructure and performance were also investigated. With a permeation flux of 44. 3 L -2 h -1 under 0. 6 MPa and more than 99% rejection of several anionic dyes, the negatively charged membrane achieves a competitive Na 2 SO 4 rejection of 95 percent with a permeation flux of 44. 3 L -1 under 0. 6 MPa, as well as more than 99% rejection of multiple anionic dyes. Thanks to the thin and defect-free selective layers by self-regulation, as-prepared membranes exhibit superior nanofiltration performance over those reported Fe 3+ /TA-based membranes.

Source link: https://europepmc.org/article/MED/36327135


A New Green Method for the Production Polyvinylchloride Plasticizers from Fatty Acid Methyl Esters of Vegetable Oils

With the exclusion of other reagents, the current study has shown the potential of aerobic oxidation of fatty acid methyl ester of vegetable oils in the manufacture of polyvinylchloride plasticizers. When compared to the formation of epoxide compounds, it was discovered that the rise in the additional ester groups resulting from the u201caerobicu201d Baeyeru2010Villiger reaction has a significant positive influence on the plasticizing capability of the oxidized FAME mixtures for PVC.

Source link: https://europepmc.org/article/MED/IND607865540


Efficient leaching process of rare earth, alkali and alkaline earth metals from phosphogypsum based on methanesulfonic acid (MSA) as green & eco-friendly lixiviant.

The leaching of rare earth elements from secondary sources is quickly expanding to produce the extensive variety of high-tech uses of these elements, such as phosphors lighting components, catalysis, and permanent magnets. In comparison to other acids such as p -toluenesulfonic acid and hydrochloric acid, this report shows that the leaching of REEs from PG using methanesulfonic acid as a green organo-sulfonic acid has occurred. The optimized leaching process was also developed using shrinking core theory to determine the kinetics behaviour of the device and enable the identification of the predominant mechanisms.

Source link: https://europepmc.org/article/MED/36337937


A green flexible and wearable biosensor based on carbon nanofibers for sensitive detection of uric acid in artificial urine.

However, as the working electrode in an electrochemical sensor, it is also a challenge to develop an electrically conductive and mechanically flexible sensing interface. The introduction of phosphated lignin enhances the molecular interaction in the electrospinning process, improving the micro-morphology, stability, and thermal stability of biomass-based carbon nanofibers. The rich active sites and high graphitization degree provide abundant access to uric acid molecules and accelerate electron transport. The custom wearable biosensor can accurately and selectively detect uric acid in artificial urine, benefiting from these useful features.

Source link: https://europepmc.org/article/MED/36196980


Improving green hydrogen production from Chlorella vulgaris via formic acid-mediated hydrothermal carbonisation and neural network modelling.

Chlorella vulgaris' hydrothermal conversion was studied in a CSF and FSR range of -2. 529 and 2. 943; and 5. 0 wt. % - 25. 0 wt. %. Green hydrogen formation can be increased up to 3. 04 mol kg -1 by using CSF 2. 433 and 12. 5 wt. % FSR reaction rates, according to the study results. The improved H 2 yield indicates an efficient alternative green hydrogen production scenario at low temperatures using high-moisture-containing biomass feedstocks.

Source link: https://europepmc.org/article/MED/36257525

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

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* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions