Articles with "direct red" as a keyword



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Adsorption characteristics of Direct Red 23 azo dye onto powdered tourmaline

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Published in 2018 at "Arabian Journal of Chemistry"

DOI: 10.1016/j.arabjc.2016.04.010

Abstract: Abstract The high electric field on the surface of tourmaline particles has a potential of enhancing electrostatic reactions during adsorption. However, information concerning the adsorption characteristics of dyes onto tourmaline is currently unavailable. In the… read more here.

Keywords: adsorption; adsorption characteristics; characteristics direct; direct red ... See more keywords

Electro-Fenton process for the removal of Direct Red 23 using BDD anode in chloride and sulfate media

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Published in 2021 at "Journal of Electroanalytical Chemistry"

DOI: 10.1016/j.jelechem.2021.115560

Abstract: Abstract This paper aims to study the degradation and mineralization of the dye Direct Red 23 (DR23) by electro Fenton (EF) process for the first time using BDD and DSA anode and carbon graphite (CG)… read more here.

Keywords: mineralization; fenton process; anode; electro fenton ... See more keywords

Simultaneous removal of Pb2+ and direct red 31 dye from contaminated water using N-(2-hydroxyethyl)-2-oxo-2H-chromene-3-carboxamide loaded chitosan nanoparticles

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Published in 2022 at "RSC Advances"

DOI: 10.1039/d2ra02526d

Abstract: This study reports the preparation of a new material that can remove synthetic dyes and trace metals simultaneously. A new coumarin derivative was synthesized and its chemical structure was inferred from spectral data (FT-IR, 1H-NMR,… read more here.

Keywords: dr31; removal; contaminated water; chitosan nanoparticles ... See more keywords

Process modeling of direct Red-28 dye eradication by biopolymeric composite of polyaniline with mango leafy biowaste material

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Published in 2024 at "Journal of Dispersion Science and Technology"

DOI: 10.1080/01932691.2024.2374928

Abstract: Abstract The use of biopolymers and synthetic adsorbents for wastewater treatment is gaining more importance due to their ease of preparation and nontoxic nature. This study focuses on developing a new biopolymeric composite using Polyaniline… read more here.

Keywords: biopolymeric composite; red dye; mango; process modeling ... See more keywords

Degradation mechanism of Direct Red 23 dye by advanced oxidation processes: a comparative study

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Published in 2020 at "Toxin Reviews"

DOI: 10.1080/15569543.2020.1827431

Abstract: Abstract Textile and dye industries have discharged various kinds of toxic residual dyes particularly azo dyes into the environment. In addition to its resistance to biological degradation, Direct Red 23 (DR-23) azo dye is considered… read more here.

Keywords: dye; study; direct red; advanced oxidation ... See more keywords

Characterization and application of Fe1−xCoxFe2O4 nanoparticles in Direct Red 79 adsorption

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Published in 2024 at "Open Chemistry"

DOI: 10.1515/chem-2024-0102

Abstract: Graphical abstract Abstract Water pollution remains a significant global challenge, with dye contamination from industrial activities being particularly problematic. Adsorption is widely recognized as an efficient, rapid, and cost-effective method for pollutant removal. To enhance… read more here.

Keywords: fe1; fe1 fe2o4; adsorption; direct red ... See more keywords

A study on the adsorption of direct red 81 on pre-treated cotton fabric

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Published in 2025 at "Acta Periodica Technologica"

DOI: 10.2298/apt250225005n

Abstract: This paper describes modeling of the dyeing process of pretreated cotton fabric. The cotton fabric is scoured, bleached, and then dyed in a solution of inorganic electrolyte and direct dye Direct Red 81. Cotton belongs… read more here.

Keywords: adsorption direct; adsorption; cotton fabric; direct red ... See more keywords

LDH-Co-Fe-Acetate: A New Efficient Sorbent for Azoic Dye Removal and Elaboration by Hydrolysis in Polyol, Characterization, Adsorption, and Anionic Exchange of Direct Red 2 as a Model Anionic Dye

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Published in 2020 at "Materials"

DOI: 10.3390/ma13143183

Abstract: A new, double hydroxide based on Co and Fe was elaborated on by forced hydrolysis in a polyol medium. Complementary characterization techniques show that this new phase belongs to the layered double hydroxide family (LDH)… read more here.

Keywords: adsorption; direct red; dye; exchange ... See more keywords
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Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1

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Published in 2020 at "Polymers"

DOI: 10.3390/polym12091880

Abstract: Two cyclodextrins (CDs), γ– and hydroxypropyl (HP)–γ–CDs were used to synthesize new adsorbents by using epichlorohydrin (EPI) as cross-linking agent in order to remove Direct Red 83:1 (DR) from water. Both polymers were characterized in… read more here.

Keywords: remove direct; synthesis new; direct red; new cyclodextrin ... See more keywords