Results 51 to 60 of about 15,550 (245)

Efficient degradation and detoxification of structurally different dyes and mixed dyes by LAC-4 laccase purified from white-rot fungi Ganoderma lucidum

Ecotoxicology and Environmental Safety
The purpose of this study is to evaluate the decolorization ability and detoxification effect of LAC-4 laccase on various types of single and mixed dyes, and lay a good foundation for better application of laccase in the efficient treatment of dye ...
Wei Deng, Mingrui Ge, Ziyi Wang, Chenwen Weng, Yang Yang   +4 more
doaj   +1 more source

Electrochemical reduction of azo dyes mimicking their biotransformation to more toxic products

Journal of Veterinary Research, 2019
Some azo dyes, including Sudans I–IV and Para Red, are genotoxic and may be biotransformed to cancerogenic aromatic amines. They are banned as food and feed additives, but their presence has been detected in food.
Pietruk Konrad, Piątkowska Marta, Olejnik Małgorzata   +2 more
doaj   +1 more source

Green Fuel Combustion Synthesis of CeO2 and Ag/CeO2 Nanoparticles for Photocatalytic and Antibacterial Applications

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Silver‐doped cerium oxide nanoparticles (Ag/CeO2 NPs) were synthesized using Ricinus communis seed extract as a bio‐derived fuel in a solution combustion method. The combustion reaction, carried out at 450°C with AgNO3 and (NH4)2[Ce (NO3)6] as metal precursors, produced CeO2 and Ag/CeO2 NPs.
T. N. Ravishankar, J. R. Adarsha, R. Mohan Reddy, S. Harisha, A. Ananda, B. M. Shilpa   +5 more
wiley   +1 more source

Caracterização e aplicação de adsorvente para a remoção de corantes de efluentes têxteis em batelada e colunas de leito fixo [PDF]

, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia QuímicaA remoção de corantes presentes em efluentes industriais tem recebido enorme atenção nos últimos anos.
Vasques, Andressa Regina
core  

Ozonation of azo dyes

Water Science and Technology, 1997
Ozone pretreatment studies of wastewater containing a specific azo dye – Orange II - were conducted in order to assess the kinetics of ozone oxidation and to evaluate the effect of ozonation on the biodegradability of the wastewater. Batch experiments were performed at different initial concentrations of the dye, showing that ozone is capable of a ...
G. Lyberatos, S. Pavlou, S. Liakou
openaire   +2 more sources

PREPARATION, CHARACTERIZATION, APPLICATIONS AND ANALYTICAL STUDIES OF SOME NEW AZO DYES DERIVED FROM SULFANILAMIDE [PDF]

Bulletin of Pharmaceutical Sciences. Assiut University
Background: Azo compounds are a class of organic molecules characterized by the presence of a double bond between two nitrogen atoms and contain one or more azo functional groups. Aim of study: This study involves the preparation of two new azo dyes from
Alaa AL-Muhsin, A. A. Ali
doaj   +1 more source

Preparation of MOEAMCl and MAAm Based Hydrogels and Effective Use in Anionic Dye Adsorption

Journal of Applied Polymer Science, Volume 142, Issue 16, April 20, 2025.
ABSTRACT In this study, hydrogels based on [2‐(Methacryloyloxy)ethyl]trimethylammonium chloride (MOEAMCl) and methacrylamide (MAAm) were synthesized for the removal of anionic dyes from aqueous solutions. Following detailed characterization, the use of hydrogels for methyl orange (MO) adsorption was investigated.
Hilal Nur Duykop Demir, Ali Delibaş, Ayşe Benk, Ramazan Coşkun   +3 more
wiley   +1 more source

Monosulfonated Azo Dyes: A Crystallographic Study of the Molecular Structures of the Free Acid, Anionic and Dianionic Forms

Crystals, 2020
Crystallographic studies of monosulfonated azo dyes have concentrated on the salt forms that contain the azo anion. Here we present a study that compares the structures of these anions with protonated free acid forms and with doubly deprotonated dianion ...
Alan R. Kennedy, Linda K. Conway, Jennifer B. A. Kirkhouse, Karen M. McCarney, Olivier Puissegur, Edward Staunton, Simon J. Teat, John E. Warren   +7 more
doaj   +1 more source

Circular Economy‐Driven Cs/Sg/MGNPs/AC Composite for Efficient Methylene Blue Removal and Subsequent Valorization as a Urea Oxidation Electrocatalyst

Journal of Applied Polymer Science, EarlyView.
This image is a graphical abstract for outlining the synthesis, characterization, and application of a novel composite material designed to remove toxic pollutants (specifically Methylene Blue dye; MB) from water, and its subsequent use in electrochemical applications.
Rehab Mahmoud, Lina M. Alneghery, Ahmed Abdelazim Khalifa, Marwa H. Shemy, Ahmed A. Allam, Saber A. A. Elsuccary, Samar M. Mahgoub   +6 more
wiley   +1 more source

Application of Eugenol-Derived Azo Dyes on Natural Textile Fabrics

Chemistry Proceedings
Eugenol, a natural product abundant in clove oil, represents a promising precursor for the synthesis of azo dyes, proving potential for textile coloration. The eugenol azo dyes were synthesized and characterized, showing stable absorption profiles across
Filipa Daniela Pedroso Mendes, Ana Margarida Fernandes, Carla Joana Silva, Maria Sameiro Torres Gonçalves   +3 more
doaj   +1 more source