Loading...
2 results
Search Results
Now showing 1 - 2 of 2
- Scale-up effects of CO2 capture by methyldiethanolamine (MDEA) solutions in terms of loading capacityPublication . Santos, Samuel P.; Gomes, João; Bordado, João C.In the present study, results from three different CO2 capture experimental scales (laboratory, pilot unit, and a larger pilot unit), using aqueous amine solutions of methyldiethanolamine (MDEA) 20 wt %, are compared in terms of loading capacity. All three tested scales produced results regarding CO2 absorption using MDEA aqueous solutions, which were largely in accordance with the theoretical loading capacity of the used amine. Nevertheless, the observed differences between the theoretical and actual absorption behaviors of MDEA solutions for the different scales can be justified with the relative weight that process variables exhibit when the process is scaled up. Therefore, in order to achieve a correct scale-up of the process, simulations should be performed in order to define the best set of operational parameters in order to achieve high production yields and therefore more process profitability.
- Use of inorganic Ca waste materials as nanocatalysts in biodiesel productionPublication . Santos, Samuel P.; Puna, Jaime; Gomes, João; Ferreira, Rosa Q.; Bordado, JoãoNowadays, around 90% of biodiesel is produced by the transesterification reaction of triglycerides with low molecular weight alcohols using acid/basic catalysts. Homogeneous catalytic transesterification is still major industrial biodiesel production process using alkali hydroxides and methoxides. However, they have disadvantages such as reusability, renderability and separability. Lately, researchers have been focusing on heterogeneously catalysed process.