Monoethanolamine
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Sclerotherapy as an esthetic indication in oral vascular malformations: a case series
Abstract Background The use of monoethanolamine oleate 5% is effective for the treatment of vascular malformations with low blood flow. Objectives To report a case series of vascular malformations in the mouth and oral cavity treated with monoethanolamine oleate 5%. Methods A retrospective descriptive study was performed in electronic patient charts cover
An. Bras. Dermatol.. Publicado em: 09/12/2019
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2. A study of the metallic silver dissolution with the MEA-NH3-Cu system
ABSTRACT Leaching of silver from minerals has been studied for decades. Recently, research has been focused on the substitution of cyanide (because of its high toxicity) from hydrometallurgical operations. In this sense, the development of alternative-green leaching solutions for the recovery of metallic silver from minerals and urban mines is necessary. In
Matéria (Rio J.). Publicado em: 19/07/2018
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3. THEORETICAL STUDY OF CO2:N2 ADSORPTION IN FAUJASITE IMPREGNATED WITH MONOETHANOLAMINE
Abstract Many efforts have been made to develop amine-based solid adsorbents for capture of CO2 by adsorption. Compared with the traditional process of absorption in aqueous solutions of amines, the adsorbents with amine immobilized in solids generally result in processes with lower capital and energy costs. The literature contains some experimental studies
Braz. J. Chem. Eng.. Publicado em: 2015-09
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4. Preparação e caracterização dos produtos de reação entre o ácido algínico com mono, di- e trietanolamina. Avaliação da interação do derivado de monoetanolamina com fármacos / Preparation and characterization of products of reaction of alginic acid with mono, di-, and triethanolamine. Avaluation of interaction of monoethanolamine derivative with drugs
Foram preparados produtos da reação do ácido algínico com a monoetanolamina (MEA), dietanolamina (DEA) e trietanolamina (TEA) sob refluxo em meio de clorofórmio, os quais foram denominados MEA, DEA e TEA-produtos. Os compostos foram caracterizados por Análise Elementar e Espectroscopia Vibracional na Região do Infravermelho. As técnicas termoanalíti
Publicado em: 2011
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5. Absorção de dióxido de carbono em soluções aquosas de aminas em uma coluna de parede molhada com promotor de película. / Carbon dioxide absorption in amines aqueous solutions in a wetted wall column with film promoter.
The CO2 absorption process in alkanolamine aqueous solutions was studied in a wetted wall column employing a film promotor of thin stainless steel woven wire, 28 mesh, which was operated in countercurrent. The tested alkanolamines were monoethanolamine (MEA), 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ). The absorption experiments were performed in
Publicado em: 2011
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6. Study of monoethanolamine nitrate content reduction in explosive slurries
The reduction of the fuel content of a monoethanolamine nitrate (MEAN) fueled explosive slurry was investigated. The work was performed in three phases. The first one involved the MEAN content reduction in a reference slurry from its initial value of 36 down to 24% by weight, the balance being filled with ammonium nitrate, the least expensive item in the slu
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-09
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7. Experimental and theoretical study of pool boiling heat transfer to amine solutions
In this investigation, a large number of experiments have been performed to measure the nucleate boiling heat transfer coefficients of water/diethanolamine (DEA) and water/monoethanolamine (MEA) binary solutions. Based on these experimental data, effects of physical properties such as surface tension and viscosity of mixtures on nucleate boiling heat transfe
Brazilian Journal of Chemical Engineering. Publicado em: 2009-03
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8. NUMERICAL INVESTIGATION OF AMINE BASED ABSORPTION PROCESSES FOR CARBON DIOXIDE CAPTURE IN CCS PROJECTS / INVESTIGAÇÃO NUMÉRICA DO PROCESSO DE SEPARAÇÃO DE DIÓXIDO DE CARBONO POR ABSORÇÃO COM AMINA PARA APLICAÇÃO EM PROJETO DE ARMAZENAMENTO DE CARBONO DE (CCS)
Absorption is a process where the components of a gaseous stream are separated through the use of a liquid solvent. The process may be simply physical or be followed by a chemical reaction. In industry, one of the most important absorption processes is the removal of carbon dioxide (CO2), by using an aqueous solution of monoethanolamine (MEA), from flue gase
Publicado em: 2009
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9. Aplicação de métodos quimiométricos na análise direta de constituintes inorgânicos em leite materno por espectrometria de absorção atômica em forno de grafite
In this work is described the methodology developments (optimization and validation) for direct quantification of Mn, Cu, Pb and Cr in breast milk without need of previous sample digestion following determination by furnace graphite atomic absorption spectrometry (GF AAS). For the development of methods for analysis of manganese and copper, monoethanolamine
Publicado em: 2008
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10. Studies about the loading of monoethanolamine (MEA) onto the non-ionic Amberlite XAD-7 resin for retention of S(IV) species / Estudos da modificação da resina não-iônica Amberlite XAD-7 com monoetanolamina (MEA) para retenção de espécies de S(IV)
A monoetanolamina (MEA) é um composto bifuncional pertencente à classe dos amino-álcoois, muito utilizado em processos industriais envolvendo a remoção de gases ácidos como SO2 , CO2 e H2S. A resina Amberlite XAD-7 é uma resina não-iônica de polaridade intermediária muito utilizada em procedimentos de pré-concentração de compostos orgânicos e �
Publicado em: 2007
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11. Procedimento alternativo de preparaÃÃo de carbonato de cÃlcio precipitado de elevada pureza / Procedure alternative of preparing precipitated calcium carbonate based on calcium of high purity final product.
This work presents a method for preparing Precipitated Calcium Carbonate based on Calcium Oxide dissolution in aqueous solution of Monoethanolamine Hydrochloride, followed, by Calcium Carbonate Precipitation after carbonation with Carbon Dioxide of the resulting solution. This method allows the use of any limestone raw material, independent of the initial co
Publicado em: 1995
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12. Estudo polarografico e amperometrico do formaldeido e do acetaldeido e suas aplicações analiticas
A differential pulse polarographic method was developed for quantitative determination of formaldehyde and acetaldehyde in aqueous solutions. The aldehydes were converted to imines by reaction with primary amines (monoethanolamine (MEA) and Hexamethylenediamine (HMDA)) and the imino group was reduced at the static mercury drop electrode. A 0,10 moI/l litium
Publicado em: 1993