Results 61 to 70 of about 12,818 (208)

Integrating anaerobic and photochemical processes: UV–vis‐driven post‐treatment for micropollutant abatement and toxicity control in UASB secondary effluent

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Upflow anaerobic sludge blanket (UASB) reactors are widely used in low‐ and middle‐income countries, but secondary effluents may still contain organic micropollutants and residual toxicity. This study evaluated UV–Vis photolysis and UV/H2O2 as post‐treatment options for UASB secondary effluent (SE), integrating micropollutant ...
Fernando Rodrigues‐Silva, Gabriella P Masceno, Paloma P Panicio, Magno Lange Albuquerque, Rafaela Imoski, Wanessa A Ramsdorf, Liziê DT Prola, Maria Clara VM Starling, Camila C Amorim, Fernando H Passig, Marcus V Liz   +10 more
wiley   +1 more source

Pancharatnam–Berry Phase Driven by Electrical Restructuring of Liquid Crystal Polarization Grating Period

Laser &Photonics Reviews, EarlyView.
Electrically controlled liquid‐crystal twist diffraction element based on the Pancharatnam–Berry phase enables switchable structural periodicity and simultaneous generation of orthogonal circularly polarized coherent waves for multifunctional planar photonic devices.
Elena Melnikova, Katsiaryna Pantsialeyeva, Alexei Tolstik, Veranika Stanevich, Daminika Dashkevich, Anatoli Murauski, Alexander Muravsky, Alina Karabchevsky   +7 more
wiley   +1 more source

Unraveling Pathway Complexity in Photoreversible Supramolecular Hydrogels: Real‐Time Visualization and Sub‐Micrometric Photopatterning

Small, EarlyView.
This research demonstrates real‐time visualization of supramolecular sol‐gel transitions using Fluorescence Lifetime Imaging Microscopy (FLIM). By leveraging 5D visualization, integrating 3D space, time, and polarity resolution, we achieved maskless sub‐micrometric photopatterning within the gel matrix.
Federico Movilla, Consuelo Ripoll, Cristián Huck‐Iriart, Juan A. González‐Vera, Angel Orte, Rafael Contreras‐Montoya   +5 more
wiley   +1 more source

Green methodology to synthesis heterocyclic diazo dyes using superacid Aquivion® PFSA PW98 as an efficient catalyst

Current Research in Green and Sustainable Chemistry
A heterocyclic diazo dye containing the coumarin structure, specifically 7-hydroxy-4-methyl-8-(4-nitrophenyl azo)-6-(4-nitrophenyl azo) coumarin, was prepared using Aquivion PFSA resin.
Fadia Al-Haj Hussien
doaj   +1 more source

An Improved Method for Removal of Azo Dye Orange II from Textile Effluent Using Albumin as Sorbent

Molecules, 2012
Azo dyes are generally resistant to biodegradation due to their complex structures. Acid orange II is one of the most widely used dyes in the textile industry.
Tadashi Ohashi, Alícia M. T. Jara, Anabelle C. L. Batista, Luciana O. Franco, Marcos A. Barbosa Lima, Mohand Benachour, Carlos A. Alves da Silva, Galba M. Campos-Takaki   +7 more
doaj   +1 more source

Tracking Photocatalytic Pathways With In Situ Surface‐Enhanced Raman Spectroscopy

Transformative Chemistry, EarlyView.
In situ SERS captures surface molecular fingerprints during photocatalysis, revealing transient intermediates, bond evolution, pathway selectivity, and charge‐coupled molecular transformation beyond catalyst‐ or product‐centered characterization. This review maps SERS‐active platforms and future site‐specific, time‐resolved, intelligent strategies for ...
Chenyang Gao, Wenqing Jiang, Aochi Liu, Yujiao Xie, Aiguo Wu, Jie Lin   +5 more
wiley   +1 more source

Decolorization of Orange-G Aqueous Solutions over C₆₀/MCM-41 Photocatalysts

Applied Sciences, 2019
The majority of the photocatalysts studied for azo-dye degradation are based on semiconductor materials. Studies reported on non-semiconducting materials are very scarce.
John Kyriakopoulos, Eleana Kordouli, Kyriakos Bourikas, Christos Kordulis, Alexis Lycourghiotis   +4 more
doaj   +1 more source

Beyond Removal Efficiency: Environmental Risk Assessment of Tartrazine Degradation via ZnO and TiO2 Nanoparticles in Mussels

Environmental Toxicology, EarlyView.
ABSTRACT Tartrazine (TZ) is a widely used synthetic azo dye with high aqueous stability, resulting in persistence in wastewater. Photoreactive nanomaterials, principally zinc oxide (ZnO) and titanium dioxide (TiO2) nanoparticles (NPs), are frequently employed for dye removal under light‐exposed conditions; nevertheless, their ecotoxicological ...
İrem Can, Ezgi Can Güzel, Volkan Saritunç, Selin Ertürk Gürkan   +3 more
wiley   +1 more source

Spectral Studies of UV and Solar Photocatalytic Degradation of AZO Dye and Textile Dye Effluents Using Green Synthesized Silver Nanoparticles

Bioinorganic Chemistry and Applications, 2016
The photocatalytic degradation of the chemical dye AZO and dye effluents in different time duration has been investigated using biologically synthesized silver nanoparticles.
R. Mariselvam, A. J. A. Ranjitsingh, P. Mosae Selvakumar, Abdullah A. Alarfaj, Murugan A. Munusamy   +4 more
doaj   +1 more source

Influence of microwave irradiation on hypochlorite decolorisation of synthetic dyes

Zaštita Materijala, 2016
In this study three synthetic dyes were treated using hypochlorite or combination of hypochlorite and microwave irradiation in order to investigate factors which determine decolorisation of the investigated compounds. An azo dye (C.I. Reactive Orange 16 -
Dušan Ž. Mijin, Dunja M. Dabić, Jelena M. Mirković, Bojan Đ. Božić, Branimir N. Grgur   +4 more
doaj   +1 more source