The world's energy production is generated mainly from fossil fuels, so it is important to develop fuels from renewable sources. Growing caution with the environmental impact imposes restrictions on emissions from the combustion of fossil fuels. With increasing human population and expanding economies in both developing and developed countries, there is an increase in energy consumption and production. The need arises to supply this high energy production with a renewable and reliable source fuel [1]. These facts have stimulated research by alternative sources for the development of renewable fuels. One of the most promising fuels is biodiesel, an alternative to petroleum diesel from high-quality renewable sources, which allows the replacement of fossil diesel oil without modifications to the vehicle's engine [2, 3]. In recent years, methyl esters of fatty acids derived from vegetable oil have gained considerable attention as alternative fuel [4, 5].
This objective of this study was to produce organoclay, analyze it, and evaluate its use in the process of removing oil emulsion from an oil–water system. The organoclay was prepared by the direct method and was characterized using X-ray diffraction, Cation Exchange Capacity (CEC), and Infrared Spectroscopy (IV). A finite bath system was used to evaluate the effects on the removal capacity, using a stirring speed (A) of between 100 and 300 rpm and an initial concentration of oil-water solution (C0) evaluated in the range of 100 to 500 mg/L. The XRD and infrared results indicated that CTAC was intercalated between the layers of Bofe clay. The percentage of oil removal from oil-in-water emulsions was between 55.99 and 96.62%. These results indicate that OC can potentially remove up to 97% oil from oil-in-water emulsions. Consequently, the OC could be considered an excellent medium for treating oily water.
O interesse em processos de separação por membranas ganham cada vez mais destaque em aplicações industriais. As membranas zeolíticas apresentam características únicas que as tornam atraentes para aplicação em processos de separação, a estabilidade mecânica, térmica e química superior a alguns materiais, tornam as membranas zeolíticas foco de intensa pesquisa. Este trabalho teve como objetivo preparar as membranas inorgânicas do tipo gama-alumina e zeolítica (MOR/gama-alumina). A membrana inorgânica do tipo gama-alumina foi sintetizada a partir da decomposição do sulfato de alumínio, moagem, compactação e conformação e a membrana zeolítica foi preparada pelo método de transporte em fase vapor, que consiste na deposição da mistura reacional da zeólita Mordenita sobre a membrana inorgânica (gama-alumina), seguido do crescimento de cristais sob condições hidrotérmicas. Foram realizadas análises por Difração de raios X (DRX), Microscopia Eletrônica de Varredura (MEV) e Termogravimetria (TG)/análise térmica diferencial (DTA) para o precursor da membrana inorgânica gama-alumina. A obtenção das membranas inorgânicas gama-alumina e zeolítica (MOR/gama-alumina) puderam ser confirmadas pelos difratogramas e por imagens obtidas por Microscopia Eletrônica de Varredura. A partir das imagens obtidas por MEV a membrana zeolítica mostra-se de forma compacta sem apresentar fissuras na superfície.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.