Dyes
Mostrando 13-24 de 887 artigos, teses e dissertações.
-
13. New Insights into the Partitioning of Phenothiazine Dyes in Aqueous Two-Phase Systems
Aqueous two-phase systems (ATPSs) have proven to be efficient and environmentally safe methods for extracting chemical species. However, the driving forces behind the partition of solutes in these systems are still little understood. A complete thermodynamic partitioning of phenothiazine dyes was investigated in poly(ethylene oxide) (PEO) + salt + water ATPS
J. Braz. Chem. Soc.. Publicado em: 2020-08
-
14. Magnetic hyperthermia therapy in glioblastoma tumor on-a-Chip model
RESUMO Objetivo: Avaliar a terapia de magneto-hipertermia em modelo de tumor de glioblastoma on-a-Chip. Métodos: As nanopartículas magnéticas recobertas com aminosilana foram utilizadas para a terapia da magneto-hipertermia, sendo avaliada a taxa de absorção específica das nanopartículas magnéticas em 300 Gauss e 305kHz. Uma pré-cultura de célula
Einstein (São Paulo). Publicado em: 10/01/2020
-
15. Effect of erythrosine and phloxine from xanthene food dyes on oxidative stress in Chinese hamster ovary cells
Abstract Objective of this study was to investigate the changes of oxidative stress parameters in Chinese hamster ovary (CHO) cells exposed to xanthene food dyes (erythrosine and phloxine), commonly-used azo dyes in the food industry. For this purpose, glutathione (GSH) and malondialdehyde (MDA) levels, glutathione peroxidase (GPx) and catalase (CAT) activit
Food Sci. Technol. Publicado em: 20/12/2019
-
16. Development of isotonic beverage with functional attributes based on extract of Myrciaria jabuticaba (Vell) Berg
Abstract Isotonic repositories are specially designed to promote rehydration during or after physical exercise. These beverages are processed for commercialization from synthetic flavorings and dyes with sensorial characteristics similar to those of fruits, in order to attenuate their natural acidity. The aim of the present study was to develop two formulati
Food Sci. Technol. Publicado em: 20/12/2019
-
17. Decolorization of textile azo dye Reactive Red 239 by the novel strain Shewanella xiamenensis G5-03 isolated from contaminated soil
Resumo Shewanella xiamenensis G5-03 isolada de solo contaminado de aterro sanitário foi eficiente em descolorir cinco corantes têxteis azos em condições estáticas. Um deles, Reactive Red 239 (RR239), foi completamente descolorido na faixa de pH de 7 a 11 (a 35°C) dentro de 3-6 h. A bactéria também foi eficiente em descolorir RR239 em uma ampla faixa
Rev. Ambient. Água. Publicado em: 28/11/2019
-
18. Plasma Treatment of Polyamide Fabric Surface by Hybrid Corona-Dielectric Barrier Discharge: Material Characterization and Dyeing/Washing Processes
In this study, the hybrid corona-dielectric barrier discharge plasma treatment was employed to modify the physical, chemical and morphological characteristics of a half-knitted fabric composed of 92% polyamide 6.6 and 8% elastane (PA). These properties of the fabric were evaluated by the water contact angle, x-ray diffraction, infrared spectroscopy, scanning
Mat. Res.. Publicado em: 28/11/2019
-
19. Photodegradation study of TiO2 and ZnO in suspension using miniaturized tests
ABSTRACT Miniaturization has been a trend in the instrumentation of chemical analyzes. The interest in miniaturization stems from the perceived benefits of faster, easier, less expensive and less wasteful analyzes than the tradition analyses. Thus, this work proposes a miniaturization of photocatalytic tests using a microplate reader for the analysis of seve
Matéria (Rio J.). Publicado em: 25/11/2019
-
20. A green approach for the treatment of dye and surfactant contaminated industrial wastewater
Resumo Os corantes sintéticos, particularmente corantes reativos e ácidos, são comumente usados na indústria têxtil devido às suas vantagens como excelente solidez da cor e brilho. Além disso, os surfactantes são usados para incrementar o sucesso da coloração na indústria têxtil. Um dos principais problemas relativos às águas residuais têxteis
Braz. J. Biol.. Publicado em: 21/10/2019
-
21. Duplo Benefício Ambiental pela Remoção de Corantes Fotosensibilizadores da Água com Uso de Resíduo Sólido Particulado
RESUMO As indústrias têxteis estão entre os setores mais poluidores do mundo, principalmente pelo descarte de resíduos de corantes sintéticos nos efluentes. Alguns processos têm sido utilizados atualmente para a remoção de corantes dos efluentes, mas apresentam as desvantagens de baixa viabilidade econômica e dificuldade de reprodução em larga esc
Matéria (Rio J.). Publicado em: 16/09/2019
-
22. Avaliação de diferentes fatores na remoção de remazol brilliant blue de soluções aquosas por adsorção em fibras de cana de açúcar e coco verde
RESUMO As indústrias têxteis, durante o processo de tingimento, liberam uma grande quantidade de corantes na água. Além do seu efeito visual e seus impactos adversos em relação à fotossíntese e demanda química de oxigênio, muitos corantes sintéticos são tóxicos, recalcitrantes, mutagênicos e carcinogênicos. Dessa forma, novas alternativas de t
Matéria (Rio J.). Publicado em: 16/09/2019
-
23. Hydrogen Peroxide Electrogeneration by Gas Diffusion Electrode Modified With Tungsten Oxide Nanoparticles for Degradation of Orange II and Sunset Yellow FCF Azo Dyes
In this work, the gas diffusion electrode (GDE) cathode of Vulcan XC72 carbon modified with nanoparticles of WO2.72 (WO2.72 / Vulcan XC72) was used for H2O2 electrogeneration and degradation of 350 mL of Orange II (OII) and Sunset Yellow FCF (SY) azo dyes by electro-Fenton (EF) and photoelectro-Fenton (PEF) processes with different Fe2+ initial content (1.00
J. Braz. Chem. Soc.. Publicado em: 16/09/2019
-
24. VALORIZATION OF SOLID WASTES FROM THE BREWERY AND BIODIESEL INDUSTRIES FOR THE BIOPRODUCTION OF NATURAL DYES
This study aims to assess a new approach for concomitant valorization of two industrial wastes - raw glycerin and spent brewer’s yeast - for the bioproduction of valuable carotenoids. Microbial pigments have numerous applications in the food and cosmetic industries. First, four cultures of yeasts were screened using pure glycerol and either (NH4)2SO4 or ur
Braz. J. Chem. Eng.. Publicado em: 15/07/2019