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61.
Al Saleh Mohammed Finance Béatrice Taher Yehia Haque Rafiqul Jaber Ali Bachir Nourhan 《Environmental science and pollution research international》2022,29(10):14036-14045
Environmental Science and Pollution Research - Although radiation level is a serious concern which requires continuous monitoring, many existing systems are designed to perform this task. Radiation... 相似文献
62.
Bourzik Oumaima Akkouri Nacer Baba Khadija Haddaji Younesse Nounah Abderrahmane Assafi Mohammed Bazzar Kaoutar 《Environmental science and pollution research international》2022,29(58):87668-87679
Environmental Science and Pollution Research - Drinking water treatment sludge (DWTS) generated from water treatment plants is a global issue because of the environmental risks it imposes. Managing... 相似文献
63.
The new city of Abuja provided an opportunity to avoid some of the environmental problems associated with other major cities in Africa. The current status of solid waste management in Abuja has been reviewed and recommendations for improvements are made. The existing solid waste management system is affected by unfavourable economic, institutional, legislative, technical and operational constraints. A reliable waste collection service is needed and waste collection vehicles need to be appropriate to local conditions. More vehicles are required to cope with increasing waste generation. Wastes need to be sorted at source as much as possible, to reduce the amount requiring disposal. Co-operation among communities, the informal sector, the formal waste collectors and the authorities is necessary if recycling rates are to increase. Markets for recycled materials need to be encouraged. Despite recent improvements in the operation of the existing dumpsite, a properly sited engineered landfill should be constructed with operation contracted to the private sector. Wastes dumped along roads, underneath bridges, in culverts and in drainage channels need to be cleared. Small-scale waste composting plants could promote employment, income generation and poverty alleviation. Enforcement of waste management legislation and a proper policy and planning framework for waste management are required. Unauthorized use of land must be controlled by enforcing relevant clauses in development guidelines. Accurate population data is necessary so that waste management systems and infrastructure can be properly planned. Funding and affordability remain major constraints and challenges. 相似文献
64.
Safaa M. Ezzat Mohammed T. Mohammed T. 《Frontiers of Environmental Science & Engineering》2021,15(4):59
65.
Hassan Nancy Husseiny Yousef Doaa Mohammed Alsemeh Amira Ebrahim 《Environmental science and pollution research international》2023,30(13):36208-36227
Environmental Science and Pollution Research - Aluminum, one of the most abundant metallic elements, is known to be toxic to multiple organs including the kidneys. This study aimed to investigate... 相似文献
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67.
Mohammed Aiman Saleh A. Naveed Muhammad Jost Norbert 《Journal of Polymers and the Environment》2021,29(8):2359-2371
Journal of Polymers and the Environment - Polysaccharides are essential macromolecules which almost exist in all living forms, and have important biological functions, they are getting more... 相似文献
68.
Md Maksud Alam Mohammad Sujauddin Gazi Mohammed Asif Iqbal Syed Mohammed Shamsul Huda 《Waste management & research》2008,26(3):291-296
Healthcare waste management (HCWM) options are inconsistent in Bangladesh. One of the first critical steps in the process of developing a reliable waste management plan requires a comprehensive understanding of the quantities and characteristics of the waste that needs to be managed. This study took into consideration both the quantity and quality of the generated waste to determine the generation rates and physical properties of healthcare waste (HCW) in Chittagong Medical College Hospital (CMCH) and also to estimate the amount of infectious and non-infectious waste generated in different wards. CMCH, the second largest hospital in Bangladesh, comprises 34 wards, 12 of which were selected randomly. Waste materials were collected from these wards and then segregated and weighed. Waste generation per day was found to be 73.22 kg/ward, 1.28 kg/bed and 0.57 kg/patient. A total of 2490 kg of HCW was produced each day in CMCH (37% being infectious and the rest being non-infectious waste). Infectious waste was 27.07 kg per ward, 0.47 kg per bed and 0.21 kg per patient and the non-infectious waste was 46.15 kg per ward, 0.81 kg per bed and 0.36 kg per patient per day. HCW comprised eight categories of waste materials with vegetable/food waste being the largest component (50.21%) and varied significantly (P < 0.05) among the 12 different wards studied. The greatest amount of HCW was recorded (154 kg) in Orthopaedics followed by 96.66 kg in the Medicine Unit-3 and the smallest amount was recorded in Casualty (8.79 kg). The amount of HCW was positively correlated with the number of occupied beds (rxy = 0.79, P < 0.01). There is no structured form of medical waste treatment in CMCH and most waste materials are dumped in open areas for natural degradation or re-sold by scavengers. It is essential to develop a national policy and implement a comprehensive action plan for HCWM that will provide environmentally sound technological measures to improve HCWM in Bangladesh. 相似文献
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Synthesis and characterization of drinking water treatment plant sludge-incorporated Portland cement
Mohammed Dahhou Mohammed El Moussaouiti Muhammad Azeem Arshad Souad Moustahsine Mohamed Assafi 《Journal of Material Cycles and Waste Management》2018,20(2):891-901
Kinetic analysis of thermally activated phase transformations in drinking water treatment plant (DWTP) sludge suggests its applicability in the materials of construction. The suggested prediction has already been verified on the sludge-based bricks. The present study deals with incorporating the same sludge in the raw meal for the synthesis of Portland cement clinkers. For this purpose, two raw meals are prepared with varying sludge loadings. The sludge effect on reactivity of the crude mixture is evaluated on the basis of the free lime content sintered at various elevated temperatures. The results of chemical and mineralogical and scanning electron microscopic analyses reveal fine mineralogical contents of Portland clinkers calcined at 1450 and 1500 °C. Moreover, the cements prepared from these clinkers by the introduction of certain proportions of gypsum, depict significant durability. The obtained results elucidate that the studied DWTP sludge-incorporated Portland cement shows considerable potential to be commercialized. 相似文献