Maria Alexandra Sandoval Riofrio is an Ecuadorian research student at University of Leicester. She is a scientist with a research experience in several engineering fields related to clean and renewable energy production, biotechnology focused on environmental sustainability and green chemistry oriented towards to the development of manufacture environmentally friendly processes. Her main research expertise was in designing and scaling up reactors for biofuel elaboration from different sources, collaborative research for environmental management procedures in efficiency energetic, photovoltaic technology and carbon capture using living organism. She is now working on implementation of new nanotechnology tools that can be scaled-up and applied in developing countries.
Molecular imprinting and computational modelling are technologies which could be used to develop bespoke specific absorbents capable of recognizing particular compounds of interest and extract them from complex plant matrices, as a renewable resource needed for the development of green technologies and sustainable society Jatropha curcas and its waste (pinion cake) have a big amount of biomolecules, and it is known that some toxic compounds such as phorbol esters (PEs) prevent this waste can be use as fertiliser or balanced feed for animals. The extracted PE could potentially be used as “biopesticide” or as building blocks for development of new drugs. Phorbol 12-merystate-13-acetate (PMA) was used as a template for the design of the polymer specific for PEs using commercial modelling software Sybyl 7.3 (Tripos, USA) Which helped to select the functional monomers possessing the highest affinity towards PMA . In accordance with computational modelling, several polymers have been prepared, tested and screened with PMA’s model solution in methanol. In order to extract PEs from the pinion cake several extraction methods have been tested using traditional organic solvents and various DES (Deep Eutectic Solvents). PEs have been purified using optimised solid phase extraction (SPE) protocol using the HEM-DVB-based polymer which demonstrated the highest binding capacity towards PMA. Preliminary results show that DES could be successfully used for the extracting PE from the pinion cake waste. Spectrophotometer and HPLC-MS (Waters, UK) will be used for the quantification and identification of the PEs and extracted components from samples.
Dans cette partie, on va étudier la configuration où l’installation est composée uniquement d’un DG et sans système de stockage, tous les besoins énergétiques du site seront fournis par ce dernier. L’étude de cette configuration est très importante, car cela nous permet de justifier l’intérêt des systèmes hybrides en comparant les deux systèmes : hybride et classique, sur le plan technique économique et environnemental.
Our energetic future has to be based on no polluting energies with long –term resources. Renewable energies are the best candidate but with intermittent production. The goal of this work is to evaluate performance of stand –alone power system, producing electricity, coupling a photovoltaic field and a wind turbine, diesel generator and a storage system made of batteries. Using Hybrid Power System can improve the exploitation of the renewable resource. The combination of several energy sources (wind turbines, photovoltaic panels etc.) in a Hybrid Power System can be very attractive for most of the remote areas, in terms of cost and availability. For a typical installation, we will examine the configuration where the installation consists only of a DG and without storage system; all energy needs of the site will be provided by the Diesel Generator. The study of this configuration is very important because it allows us to justify the interest of hybrid systems by comparing the two systems, hybrid and classic, economic and environmental technically. Reducing the emissions of gaseous pollutants is the goal of this study, within the meaning of remedy problems related to air pollution.