نتایج جستجو برای: applicable to heavy metals sorption processes
تعداد نتایج: 10747158 فیلتر نتایج به سال:
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
Introduction: Nowadays, advancements in industries, technology and human welfare level have lead to accumulation of solid wastes and have endangered environmental health. Incorrect waste management intensifies this problem. Recycling and composting (transformation of organic waste to humus) are the most important ways in waste management. Health and safety of the compost is an important issue b...
Almost all heavy metals are serious toxicants as carcinogens. However, due to their chemical and physiological properties, heavy metals are useful in industrial areas including alloy, smelting and production of commercial products. Such applications increase the opportunity for heavy metal exposure. Waste from industrial processes is also a major source of environmental contamination and accumu...
Remediation states for the removal of pollutants from the environment. Remediation can be done in various ways such as by using waste biomass for sorption of pollutants or by living organisms like plants, microbes that cause degradation of pollutants. Bioremediation implies the use of microbes in the removal of heavy metals, industrial wastes and any other type of toxic wastes from the environm...
Samples of active coke, fresh and spent after cleaning flue gases from communal waste incinerators, were investigated. The outer layers of both coke particles were separately removed by comminution in a spouted bed. The samples of both active cokes were analysed by means of densities, mercury porosimetry, and adsorption technique. Remaining cores were examined to determine the degree of consump...
Heavy metals in dust can directly enter to the human body through ingestion and inhalation. They can pollute the water and soil resources via atmospheric precipitation and accumulate in the plant tissues and then enter human body through water and food. This research aimed to study the heavy metals concentration in dust in Kermanshah province and to identify their sources. 49 samples of dust we...
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