Abstract:Cette étude porte sur l’évaluation des rejets de chrome et plomb dans les lixiviats produits par les décharges des villes de Mohammedia et de Fès. Les lixiviats présentent une importante concentration en chrome qui peut atteindre 5 mg/l dans le cas de la ville de Mohammedia et 9 mg/l pour la décharge de Fès. Le Pb atteint 2,1 mg/l pour le lixiviat de la décharge de Fès et 0,7 mg/l pour celle de Mohammedia. Par ailleurs, les concentrations en Cr et en Pb détectées dans les sédiments prélevés au niveau de la riv… Show more
“…[14]. Several studies report that landfill leachate is very rich in organic pollutants [15,16]. The absence of organic pollutants at the leachate puddles studied is probably due to the decontamination of this material during the percolation of the liquid in the soil before being overrun at the edge of the OMR, knowing that soil has important purifying properties [17].…”
“…[14]. Several studies report that landfill leachate is very rich in organic pollutants [15,16]. The absence of organic pollutants at the leachate puddles studied is probably due to the decontamination of this material during the percolation of the liquid in the soil before being overrun at the edge of the OMR, knowing that soil has important purifying properties [17].…”
“…During the field observations, we noted in this area leachate seepage into El Maleh wadi. Analyses carried out on the leachate from Mohammedia landfill have shown lead concentrations up to 690 μg/L [16]. Sample station ten also shows the highest concentration of manganese (Fig.…”
Assessing heavy metal concentrations in wetlands and identifying sources of metal contamination are critical steps in protecting wetlands. Using seven sampling stations, we evaluated the spatial variation of some heavy metal concentrations in surface waters of the Mohammedia wetland and a selected segment of the El Maleh wadi that feeds the wetland. Field observations made it possible to identify and map the pollution discharged into El Maleh wadi, carrying heavy metals into the wetland. The analyses showed that the concentrations of lead, manganese, and cadmium far exceed the thresholds relating to fish life in 100% of sampling stations. All the evidence points to heavy metals contamination of surface water in Mohammedia wetland, generated by industrial activities, wastewater discharges, and leachate from the old landfill located upstream.
“…In Morocco, the bestrecycled waste is cardboard, paper, and iron. Around 20% of used paper is recovered, and its reuse rate is 40%, while recycled plastics account for only a small proportion of household waste [7]. Overall, the percentage of waste recovered in Morocco varies around 8%.…”
Section: Discussionmentioning
confidence: 99%
“…The most sought-after recycled materials are cardboard and printing trimmings. Paper recycling activity is mainly driven by demand from the Moroccan Cardboard and Plastics Company (CMCP), around which the collection chain for recycled materials is perfectly organized [7].…”
The town of Zuenoula, located in central west of Côte d’Ivoire, lacks socio- cultural activities that could have a positive impact on the accommodation sector. It has a small number of hotel establishments. Despite this, hotels benefit from stays for ceremonies, seminars, and funerals. This frequentation of hotel establishments generates waste, which is difficult to manage properly. They dispose of their waste in the same way as ordinary household waste. To reduce waste, some is recycled and then recovered. The aim of this study is to show how waste from hotels in the town of Zuenoula is recycled. To achieve this, the chosen methodology is based on documentary research and field surveys supported by questionnaires and direct observation. For the selection of the sample, the reasoned choice method was used, supported by the snowball method, for greater efficiency. The results revealed that hotel establishments produce various types of solid waste, of which the recovered waste (25%) is water bottles, unusable sheets and towels, faulty appliances, and leftover food. As for no recycled hotel waste (75%), 13% is collected by municipal services, 62% is disposed of on the streets, 13% on empty lots, and 12% around wetlands. All the hotel establishments surveyed had no infrastructure for collecting the waste produced on a daily basis, which degraded the population’s living environment.
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