Removal Of Dyes
Mostrando 1-12 de 81 artigos, teses e dissertações.
-
1. 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
-
2. 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
-
3. 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
-
4. Factors and mass ratio analyses for Reactive Blue 19 dye decolorization using ozone: an experimental and analytical modelling approach
RESUMO Os corantes reduzem significativamente a penetração da luz solar no corpo d’água e, consequentemente, afetam a fotossíntese e a transferência de oxigênio. Realizaram-se modelagens experimental e analítica da remoção do azul reativo 19 por ozônio. Para isso, avaliaram-se os atributos e a taxa mássica por ensaios em batelada. A eficiência
Eng. Sanit. Ambient.. Publicado em: 30/05/2019
-
5. Reestruturação na forma do tratamento de efluentes têxteis: uma proposta embasada em fundamentos teóricos
Resumo As indústrias têxteis utilizam grandes quantidades de água nos processos de tingimento e beneficiamento das fibras, gerando volumes elevados de efluentes contendo corantes, surfactantes, íons inorgânicos, agentes umectantes, entre outros. O principal impacto ambiental desses efluentes está relacionado com a absorção de luz no meio aquático,
Gest. Prod.. Publicado em: 01/04/2019
-
6. Efficiency of decolorization of different dyes using fungal biomass immobilized on different solid supports
Abstract Different technologies may be used for decolorization of wastewater containing dyes. Among them, biological processes are the most promising because they seem to be environmentally safe. The aim of this study was to determine the efficiency of decolorization of two dyes belonging to different classes (azo and triphenylmethane dyes) by immobilized bi
Braz. J. Microbiol.. Publicado em: 2018-06
-
7. Competitive Adsorption of Dye Species onto Biomass Nanoporous Carbon in Single and Bicomponent Systems
ABSTRACT We first present a cost-effective approach to simultaneously dispose of rutaceae plant waste (the discarded peels of orange, finger citron, pomelo and lemon) to yield biomass nanoporous carbons (BNCs). The adsorption of orange II (OII) and acid chrome blue K (ACBK) from aqueous solutions in single and binary dye systems by four types of BNCs were st
Braz. J. Chem. Eng.. Publicado em: 2018-01
-
8. Removal of reactive blue 21 and reactive red 195 dyes using horseradish peroxidase as catalyst
Abstract-Textile effluent is rich in hydrolyzed dyes that need to be removed. This study presents an evaluation of the potential of the enzyme horseradish peroxidase to remove the hydrolyzed dyes Reactive Blue 21 (RB 21) and Reactive Red 195 (RR 195) from cotton fiber and the effluent of the dyeing process. The parameters pH, dye concentration and temperatur
Braz. J. Chem. Eng.. Publicado em: 2017-07
-
9. Biosorption of anionic textile dyes from aqueous solution by yeast slurry from brewery
ABSTRACT This study investigated the biosorption of the anionic textile dyes: Reactive Red 239 (RR239), Reactive Black B (RBB) and Direct Blue 85 (DB85) according to pH, biomass dosage, contact time and dye concentration onto waste beer yeast slurry. The kinetics and isotherm of the removal of dyes were also studied. The equilibrium of biosorption reaction w
Braz. arch. biol. technol.. Publicado em: 11/05/2017
-
10. OXIDAÇÃO ELETROQUÍMICA DOS CORANTES REATIVOS PRETO 5 E AZUL 19 UTILIZANDO UM ELETRODO DE DIAMANTE DOPADO COM BORO NÃO COMERCIAL
We have studied the treatment of Reactive Black 5 (RP5) and Blue 19 (RA19), which are respectively azo and anthraquinone textile dyes, by electrochemical oxidation using a non commercial boron doped diamond electrode supported on titanium metallic with a relation between B and C equal to 15,000 ppm. Pt was used as counter electrode and Ag/AgCl(sat) was the r
Quím. Nova. Publicado em: 2016-11
-
11. Preparation and Performance of TiO2-ZnO/CNT Hetero-Nanostructures Applied to Photodegradation of Organic Dye
Water pollution by organic compounds is one of the major challenges faced by industries that use dyeing processes. Thus, some methods were developed for degrading dyes in wastewaters, including heterogeneous photocatalysis by semiconductor oxides. However, these oxides have limited photocatalytic activity due to the fast recombination of photogenerated elect
Mat. Res.. Publicado em: 03/10/2016
-
12. Studying the electrical, thermal, and photocatalytic activity of nanocomposite of polypyrrole with the photoadduct of K3[Fe(CN)6] and diethylenetriamine
Abstract The present work reports the synthesis of nanocomposite of polypyrrole with [Fe(CN)3(dien)].H2O photoadduct via in-situ oxidative chemical polymerisation. Photoadduct was synthesised by irradiating an equimolar mixture of K3[Fe(CN)6] and diethylenetriamine (dien) using Osram photo lamp. The successful synthesis of photoadduct was proved by Elemental
Mat. Res.. Publicado em: 25/07/2016