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The layer of black phosphate in Youssoufia is characterized by the presence of underground water in the building sites. This drainage water must be removed to allow the exploitation of these layers. Observations of the tonnage/flow relationship during previous years allowed the prediction of more than 35000 m3 drainage water/day from the year 2000. This water has particularly high levels of fluorides, which represents a permanent risk for the rural population, which relies on groundwater (wells) for its daily consumption. To minimize adverse health affects and to build on earlier work, the current study was focussed on the sorption performances of coal fly ash in the dynamic mode and on regeneration tests of these ashes for possible revalorization. In this study, we were interested in both the defluoridation of subsoil waters in Youssoufia (drainage waters) by percolation through a column of fly-ash collected from the power station of El Jadida and in fluoride desorption from the ash.The first results from the characterization of this water showed that fluoride concentrations were elevated, exceeding the water quality standard established by the World Health Organization (WHO), 0.7 mg/L for a semi-arid climate. This abnormally elevated content in fluoride comes from the raw phosphates, which have a high fluoride content. Chemical analysis of the fly-ash, carried out by x-ray fluorescence, demonstrated that the principal components were silica, alumina, oxide iron (Fe2O3), and calcium oxide.With respect to the first objective of this study, the sorption experiments of water soluble F- ions from the drainage waters were carried out at 25 °C in a glass column (33 cm high, 2.2 cm in internal diameter) filled with a well-defined mass of fly-ash. The process involved: placing 250 mL of the solution in the higher tank (placed in top of the column) and the flows were adjusted to 4.6, 7.7 and 15.4 mL/h. The concentration of fluorides was measured in the effluent every 24 h, with a fluoride ion selective electrode, pH model Orion SA 520 according to a standardized method (AFNOR, T90-004). Each experiment was carried out twice. The drainage water used had a fluoride content of 2.50 mg/L.With respect to the second objective, the study of the desorption of fluorides from the fly-ash was carried out in a static reactor. The choice was related to chemical desorption with soda, and tests were carried out to evaluate the parameters likely to support desorption (concentration of soda, volume to be used, kinetics of desorption). The method used for desorption consisted of brewing the fly-ash in a basic solution (1g of ashes /100mL of soda) during one hour, at a stirring speed of 300 rpm. The concentration of fluorides was then measured in this solution by a potentiometric method following filtration. The fly-ash was removed and rinsed with distilled water and then re-used for a new sorption. The desorption tests were carried out on fly-ash that had been saturated by contact with the drainage waters from Youssoufia ([F] = 2.5 mg/L, pH=7.86). The sorption stage consisted of putting 10 g of ash in contact with 1 L of the drainage water with a stirring rate of 300 rpm and the tests were carried out at ambient temperature.The results of the defluoridation by percolation through the fly-ash showed that the concentration of fluorides in the effluent decreased to 0 mg/L « < 5 10-7 M », when the flow decreased from 15.4 mL/h (flow 1) to 7.7mL/h (flow 2) to 4.8 mL/h (flow 3), after 96 to 120 hours. Similar results were also obtained by Piekos et al (1998).The first regeneration results were encouraging for several reasons. First of all, the regeneration of support was possible and desorption was very important. This demonstrated that basic media are probably favorable for desorption. In parallel, the kinetics of desorption with soda were very fast and they did not exceed one hour for the various soda solution concentrations tested. Indeed, it was noted that at the end of one hour at least 90% of fluorides were desorbed. The optimum conditions for desorption were 60 min of contact and a soda concentration 6 M.Regenerated ashes were placed again in contact with drainage waters containing fluoride concentrations of 2.50 mg/L. A new sorption of fluorides was noted. This result led us to study the effect of cycle numbers on the adsorption-desorption of fluorides in relation to the effectiveness of regeneration. A histogram of the results demonstrated that the quantities adsorbed and desorbed for the same cycle were practically equal for the eight cycles carried out, thus the effectiveness of ash was practically the same.

Keywords: Défluoruration, cendres volantes, percolation, régénération, eaux d'exhaure, Maroc, Defluoridation, fly-ash, percolation, regeneration, drainage waters, Morocco

ABSTRACTIn this article, we are interested in one of direct results of languages in contact, that of the mixing of French and Arabic languages among Moroccan teachers of French in Morocco outside of school. On examining a verbal corpus collected from a group of male teachers, we noticed a mixing of codes in their discussions, the mixing of two completely different linguistic codes. The analysis we have developed focuses on the lexical component, through which we have tried to highlight factors likely to provoke the mixing of the two languages in contact. This analysis leads us to conclude that even Arabic-speaking teachers of French can't escape French and Arabic language mixing.

Morocco has launched in 2016 a new teacher training reform in a context characterized by poor performance of learners and massive teacher retirements. Its implementation was accompanied by several substitutions and groupings. This article applied meta-analysis of a corpus composed of official documents and researches, draws an inventory of various training actions. Results reveal a diversity of involved establishments; the advantage of the consecutive model; an evolution of course contents in face-to-face training; a practical training followed by several actors; and poor distance training when it comes to skills upgrading.

Keywords: Établissement, formation initiale, formation qualifiante, enseignant, cycle secondaire, Establishment, initial training, qualifying training, teacher, secondary cycle

Cette étude porte sur les relations interpersonnelles des personnes d’origine subsaharienne habitant la ville de Rabat au Maroc. L’échantillon comprend des hommes et des femmes et inclut à la fois des migrants irréguliers, des étudiants, des stagiaires, des réfugiés, des personnes venues au Maroc pour des raisons médicales ou pour y travailler. L’étude analyse la visibilité et l’invisibilité en tant que concepts mouvants et aucunement dichotomiques. Au-delà des différences de parcours, de conditions de vie et de statut juridique au Maroc, les participants perçoivent tous leur vécu actuel comme transitoire. Point de convergence de ces rencontres, leur quotidien au Maroc est vécu comme un passage, un tremplin, dans l’espoir non pas uniquement d’aller en Europe, mais plutôt de pouvoir (sur)vivre et un jour donner sens …

In 2007, the Mohamed VI Foundation for Environmental Protection has introduced in Morocco the “Green Key” ecolabel, which aims to develop responsible tourism by rewarding and supporting the best initiatives in environmental management in the tourist accommodation sector. And since 2008, the year of the first “Green Key” labeled hotels, the number of labeled accommodations keeps increasing. Is this an indication that tourism businesses are aware of the relevance of good environmental management or is it just an entrepreneurial opportunity that aims to distinguish from competitors and display an environmental ethics of the accommodation establishment or even to attract tourists ever more environmentally conscious, even during their touristic visits?

Keywords: labellisation touristique, écolabel Clef Verte, gestion environnementale, oasis, Maroc., tourism certification, Green Key ecolabel, environmental management, oasis, Morocco.

Based on case study, in a postcolonial perspective – the emergency of domesticity between mountaineers from the Morocco High Atlas who are attached to the city in Morocco –, this paper investigates the question of modern domestic slavery considering its recomposition during the colonisation as well as the postcolonial relations that frame work and mobility. It shows how deep the influence of the socio-history of bondages in repressive contexts characterized by inequalities between territories and women can be. Based on written sources, observations and interviews, this paper offers an analysis of bondages « from the bottom » and from (former) employees and their relatives' point of view. These persons use the scarce opportunities locally known to have means into a modern, migratory and salaried record – « as the city-dwellers », as they said. This record imposes them domesticity, which they discover during the colonisation but that they always redefine considering violence and new escapements.

Keywords: Moujoud, postcolonialisme, travail non libre, relations, circulations, violences, attachements, résistances minoritaires, Moujoud, Post Colonialism, Unfree Labour, Relations, Circulations, Violence, Attachments, Resistances Minorities, Moujoud, post-colonialismo, trabajo no libre, relaciones, circulaciones, violencias, lealtades, resistencias minoritarias