Electrolysis
Mostrando 13-24 de 121 artigos, teses e dissertações.
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13. 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
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14. BATTERY RECYCLING: EFFECT OF CURRENT DENSITY ON MANGANESE RECOVERY THROUGH ELECTROLYTIC PROCESS
Abstract This work aims to verify the possibility of using depleted batteries as a source of manganese dioxide applying the electrolytic process. An electrolyte solution containing the following metal ions was used: Ca (270 mgL-1), Ni (3.000 mgL-1), Co (630 mgL-1), Mn (115.3 mgL-1), Ti (400 mgL-1) and Pb (20 mgL-1). The production of electrolytic manganese d
Braz. J. Chem. Eng.. Publicado em: 2016-06
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15. Testing electrode suitability for field stimulation of high-threshold biological preparations
IntroductionA problem posed by electrical field (E) stimulation of biological preparations with high excitation threshold is that the E intensity required for excitation is likely to induce water electrolysis at the electrode surface, which can alter the extracellular medium and cause deleterious effects on the cells. In this study, different electrode mater
Res. Biomed. Eng.. Publicado em: 2015-09
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16. Electrochemical Oxidation of Landfill Leachate: Investigation of Operational Parameters and Kinetics Using Graphite-PVC Composite Electrode as Anode
The preparation of a new carbon composite electrode constructed from graphite-polyvinyl chloride (graphite-PVC) compressed mixtures was used for the first time to treat landfill leachate in Malaysia under electrochemical oxidation. The electrochemical oxidation of landfill leachate was studied on graphite-PVC and Pt electrodes as anode and cathode, respectiv
J. Braz. Chem. Soc.. Publicado em: 2015-05
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17. Kinetics and Product Analysis of the Electrochemical Dehalogenation of Hexachlorobenzene
A method for establishing the kinetics and products of the electrochemical degradation of hexachlorobenzene (HCB) is described. One plausible way of reducing HCB´s toxicity is through cathodic dehalogenation. The characterization of products formed during the electrochemical reduction and the reaction kinetics are both reported. Pentachlorobenzene (PCB), te
J. Braz. Chem. Soc.. Publicado em: 2015-04
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18. A systematic study on electrolytic production of hydrogen gas by using graphite as electrode
Alkaline water electrolysis is one of the easiest methods for hydrogen production that has the advantage of simplicity. The major challenges in the water electrolysis are the reduce energy consumption, cost and maintenance and to increase reliability, durability and safety. In this regard, the electrolytic production of hydrogen is systematically studied by
Mat. Res.. Publicado em: 24/09/2013
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19. Hydrogen production by alkaline water electrolysis
Water electrolysis is one of the simplest methods used for hydrogen production. It has the advantage of being able to produce hydrogen using only renewable energy. To expand the use of water electrolysis, it is mandatory to reduce energy consumption, cost, and maintenance of current electrolyzers, and, on the other hand, to increase their efficiency, durabil
Quím. Nova. Publicado em: 2013
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20. Eletrodegradação de Ponceau 2R utilizando ânodos dimensionalmente estáveis e Ti/Pt
This paper reports the electrochemical degradation of the azo dye Ponceau 2R under galvanostatic electrolysis in the 1 to 200 mA cm-2 range at room temperature using dimensionally-stable anodes of oxygen (DSA-O2), chlorine (DSA-Cl2) and a titanium electrode of platinum coated with platinum oxide (Ti/Pt). The methodology applied was efficient for removing the
Quím. Nova. Publicado em: 2013
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21. Introdução de misturas de GNV e hidrogênio (Hidrano) em veículos convencionais no Brasil e seus impactos econômicos, ambientais e energéticos / Introduction of CNG and hydrogen (HCNG) for conventional vehicles and its economic, environmental and energy impacts
Several strategies have been proposed to introduce hydrogen in the economy specifically in the transport sector in order to reduce environmental impacts of conventional fuels. One of the strategies implies in adding hydrogen to compressed natural gas (HCNG), making use of the existing refueling stations and natural gas fleet. Thus the costs and time for the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2012
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22. AvaliaÃÃo da injeÃÃo de gÃs HHO em um gerador a gasolina para fins de energizaÃÃo rural / DEVELOPMENT AND EVALUATION OF ELECTROLYTIC REACTOR TO PRODUCE HHO GAS
Este trabalho teve o objetivo de desenvolver e avaliar um sistema de reaÃÃo eletrolÃtica para a produÃÃo de gÃs HHO. O gÃs HHO, tambÃm conhecido como gÃs de Brown ou gÃs hidrÃxi, pode ser utilizado concomitantemente com combustÃveis lÃquidos em motores ciclo Otto e ciclo Diesel, visando à reduÃÃo do consumo destes Ãltimos. Para a realizaÃÃ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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23. Phenol removal from wastewaters by electrochemical oxidation using boron doped diamond (BDD) and Ti/Ti0.7Ru0.3O2 dsa® electrodes
Industrial wastewater containing non-biodegradable organic pollutants consists of highly toxic effluents whose treatment is necessary due to environmental and economical restrictions. In order to treat these effluents, an electrochemical process using a dimensionally stable anode (DSA®) and boron-doped diamond (BDD) electrode was studied. The performance of
Braz. J. Chem. Eng.. Publicado em: 2012-12
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24. Microstructure and metal-insulator transition in single crystalline KMo4O6
High quality KMo4O6 single crystals with tetragonal structure (space group P4/mbm) have been prepared by fused salt electrolysis. The crystals were studied by scanning electron microscopy (SEM), X-ray diffractometry, electrical resistivity, and magnetization measurements. X-ray powder diffraction patterns and SEM have given some information on the growth of
Mat. Res.. Publicado em: 11/10/2012