Perspectives de phytostabilisation par Jatropha curcas L. des résidus miniers de la mine de Zaida (Haute Moulouya, Maroc)

Growth performance of Jatropha curcas were investigated on various substrates of abandoned lead mine of Zaida (High Moulouya, Morocco). Jatropha curcas shows proper installation despite elevated levels of trace metals and metalloids precisely Pb, Cu, Zn and As in experimental substrates. The accumulation of trace metals and metalloids (TMM) in the different compartments of Jatropha curcas depends on the type of substrate (clay uncovering, tailings, control soil). The low rate of translocation of TMM in J. curcas gives great power of phytostabilization.Les performances de croissance de Jatropha curcas L. ont été étudiées sur divers substrats de la mine de plomb abandonnée de Zaida (Haute Moulouya, Maroc). Jatropha curcas montre une bonne installation malgré les teneurs élevées en Pb, Cu, Zn et As dans les substrats expérimentaux. L’accumulation des éléments traces métalliques (ETM) dans les différents compartiments de Jatropha curcas dépend du type du substrat sur lequel elle est plantée (argile de découvrement, résidus miniers, sol témoin). Le faible taux de translocation des ETM confère à Jatropha curcas un grand pouvoir de phytostabilisation.El Himer Sarah, Bouabdli Abdelhak, Baghdad Bouamar, Saidi Naima. Perspectives de phytostabilisation par Jatropha curcas L. des résidus miniers de la mine de Zaida (Haute Moulouya, Maroc). In: Ecologia mediterranea, tome 39 n°2, 2013. pp. 19-30

Photovoltaic Concentration: Research and Development

International audienceConcentrator Photovoltaic (CPV) technology, by using efficient optical elements, small sizes and high efficiency multi-junction solar cells, can be seen as a bright energy source to produce more cost-effective electricity. The main and basic idea is to replace the use of expensive solar cells with less expensive optical elements made from different materials. This paper aims to give to the readers a rapid and concise overview of CPV and the main characteristics to be considered when designing a CPV system. It reviews the main optical configurations presented in the literature, their advantages and drawbacks, as well as the recent progress in the concentration ratio and the major performances achieved in the field. The paper considers the more recent works, their optical designs, as well as their optical and electrical performances. It also relates the major achievements on the industrial side with the major milestones in CPV developments

Optimal design of a dielectric totally internally reflecting concentrator for CPV units

International audienceThe aim of the presented work is to determine the optimum height and front surface arc angle of dielectric totally and internally reflecting concentrator associated with a Fresnel lens for solar concentrators used in photovoltaic systems. Ray tracing technique was used to simulate the optical characteristics of this CPV unit with various design parameters. An optimum concentrator was determined by varying sizes of the secondary optic and using two materials: the Fused Silica and the BK7

Indoor characterization of pyramid- and cone-type secondary optics

International audienceTwo stages optical concentrators for concentrated photovoltaic (CPV) are studied both experimentally and theoretically. They are composed of a Fresnel lens made of PMMA and coupled to two different secondary optical elements (SOEs) types: a pyramid and a cone made of fused silica. Results, in terms of optical efficiency and acceptance angle, show that the pyramid-type is the best choice for the secondary optical element

Abstracts of the 1st International Conference on Trends and Innovations in Smart Technologies (ICTIST’22)

The first edition of the International Conference on Trends and Innovations in Smart Technologies (ICTIST’22) was held on 7–8 October 2022, bringing together researchers and experts from the fields of communication networks and security, computational intelligence, and engineering. The conference provided a platform for participants to share their research and discuss the latest trends and innovations in these areas. The present report will start by providing an overview on the keynote speeches and the main axes around which the communication sessions revolved before moving on to more detailed abstracts, presenting each of the topics presented during the ICTIST’22 conference