نتایج جستجو برای: a waste tailing from alumina production
تعداد نتایج: 14731793 فیلتر نتایج به سال:
considering the increase in waste production, scarcity of land allocated to landfill in urban areas, concerns about ecological damages caused by hazardous waste and damages done to the environment, municipal waste management has become of tremendous importance. the study investigated the behavioral patterns of households regarding waste separation at source using data collected through intervie...
background : due to the crucial role of dental solid waste in the spreading of pathogens and threats to human health and the environment, its optimal management is very important. methods: this was a descriptive cross-sectional study. the study population consisted of 40 dental centers, from among which 11 dental centers were selected through random sampling. from each center, 3 samples were co...
Background and Aim: The Razi Petrochemical Complex is one of the greatest factories producing nitrogen and phosphate fertilizers and various other chemicals. The site, comprising 17 production units with a total surface area of around 100 hectares, is located on the outskirts of Imam Khomeini port. The ammonia (1) section of the plant, with its production capacity of 1000 tons/year, was select...
Abstract Secondary aluminum production is required for the conservation of environment. It can significantly reduce greenhouse gas emissions and energy consumption alumina, a source primary aluminum. requires sorting processes metal scrap before starting refining process. Salt slags generated from both secondary need to be recycled/treated as they are considered hazardous byproducts. This revie...
Background and Objective: Medical waste is among the environmental problems. Failure to manage these wastes leads to the prevalence of various diseases. This study aimed to rank the educational hospitals of SBUMS by assessing medical waste reduction. Materials and Methods: First, a review of past national and international studies was performed and accordingly, 12 criteria and 30 sub-criteria ...
Chemical retention, i.e., partition of the element between aqueous solution and mineral surface, is a key phenomenon for assessing the safety of possible nuclear waste disposal. For this purpose, the sorption of Eu(III) onto a model mineral-alpha-alumina-is studied here, including the effects of groundwater chemistry: pH and concentrations of small organic and inorganic ligands (acetate, oxalat...
Considering increasing population growth in recent decades, and consequently, the increase in waste production in the world, waste management and efforts to reduce their harm to the environment has become an important issue. One of the appropriate ways to manage municipal waste is to generate energy from waste, especially by RDF production method. On the other hand, in order to reduce the consu...
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