Suchergebnisse

AbstractThe carbon dioxide (CO2) separation technology has become a focus recently, and a developed example is the membrane technology. It is an alternative form of enhanced gas separation performance above the Robeson upper bound line resulting in the idea of mixed matrix membranes (MMMs). With attention given to membrane technologies, the MMMs were fabricated to have the most desirable gas separation performance. In this work, blend MMMs were synthesised by using two polymers, namely, poly(ether sulfone) (PES) and poly (ethylene glycol) (PEG). These polymers were dissolved in blend N-methyl-2-pyrrolidone (NMP) and dimethylformamide (DMF) solvents with the functionalised multi-walled carbon nanotubes (MWCNTs-F) fillers by using the mixing solution method. The embedding of the pristine MWCNTs and MWCNTs-F within the new synthesised MMM was then studied towards CO2/N2 separation. In addition, the optimisation of the loading of MWCNTs-F for blend MMM for CO2/N2 separation was also studied. The experimental results showed that the functionalised MWCNTs (MWCNTs-F) were a better choice at enhancing gas separation compared to the pristine MWCNTs (MWCNTs-P). Additionally, the effects of MWCNTs-F at loadings 0.01 to 0.05% were studied along with the polymer compositions for PES:PEG of 10:20, 20:20 and 30:10. Both these parameters of study affect the manner of gas separation performance in the blend MMMs. Overall, the best performing membrane showed a selectivity value of 1.01 + 0.05 for a blend MMM (MMM-0.03F) fabricated with 20 wt% of PES, 20 wt% of PEG and 0.03 wt% of MWCNTs-F. The MMM-0.03F was able to withstand a pressure of 2 bar, illustrating its mechanical strength and ability to be used in the post combustion carbon capture application industries where the flue gas pressure is at 1.01 bar.

It is very important scientific interest in developing new technologies for the conversion of renewable resources in sustainable energy, chemicals and biomaterials, as it involves environmental, political, and economic issues related to dependence that society has for the use of petroleum feedstock. The oil has other uses as raw material for about 95% of the carbon-containing chemicals used in our society. Under this, the interest in the study of furan components is to check viability of production, preparation and application thereof. One (enzymatic and chemical) hybrid-chemical route sucro area for the production of 2,5-dimetilfurano (DMF) as bicomponent clean renewable energy is presented in this research to improve the octane biofuel Talara Refinery - PETROPERÚ SA using biomass as feedstock. Compared to ethanol, 2,5-dimethylfuran (DMF) has a higher energy density (more than 40%), a boiling point higher (20 ° C above), and is not soluble in water. The developed technology creates a new route to transform native abundant renewable biomass resources in a convenient liquid biofuels for the transport sector, and may reduce the need for oil and fossil fuels. It also estimates the conversion of different lignocellulosic wastes in DMF, highlighting the bagasse as main attraction for the production of 0,119 L of DMF / kg of dry bagasse, with the Department of Piura a key development area. ; Es de mucha importancia el interés científico en el desarrollo de nuevas tecnologías para la conversión de recursos renovables en energía sustentable, productos químicos y biomateriales, ya que envuelve cuestiones ambientales, políticas, y económicas asociadas a la dependencia que la sociedad tiene por el uso del petróleo como materia prima. El petróleo tiene además otros usos como materia prima de aproximadamente 95% de los productos químicos que contienen carbono usados en nuestra sociedad. En virtud de esto, el interés en el estudio de los componentes furánicos es verificar su viabilidad de producción, preparación y aplicación de los mismos. En esta investigación se presenta una ruta híbrida (enzimática y química) del área sucro-química, para la producción de 2,5-Dimetilfurano (DMF), como biocomponente energético renovable limpio para mejorar el octanaje de los biocombustibles de Refinería Talara – PETROPERU S.A., usando como materia prima la biomasa. Comparado con el etanol, el 2,5-Dimetilfurano (DMF) tiene una densidad energética más alta (de 40% más), un punto de ebullición más alto (20ºC encima), y no es soluble en el agua. La tecnología desarrollada crea una nueva ruta para transformar recursos renovables abundantes oriundos de la biomasa en un biocombustible líquido conveniente para el sector de transporte, pudiendo así disminuir la necesidad en petróleo y combustibles de origen fósil. Se estima también la conversión de diferentes residuos lignocelulósicos en DMF, destacando el bagazo de caña como principal atractivo para la producción de 0,119L de DMF/kg de bagazo seco, siendo el Dpto. de Piura una localidad clave para el desarrollo.