نتایج جستجو برای: airless and contaminated industrial environment
تعداد نتایج: 16899608 فیلتر نتایج به سال:
The disposed wastes of zinc industries contain large amounts of heavy metals such as Pb2+ and Cd2+. These elements are considered as hazardous elements to human beings and other organisms. This study aims at introducing the fungal isolates that evolved to be compatible with waste deposits during the time and can absorb Pb2+ and Cd2+ions. During the spring and autumn in 2011, eight samples of se...
Escherichia coli is a heterogeneous species that can be part of the normal flora of humans but also include strains of medical importance. Among pathogenic members, Shiga-toxin producing E. coli (STEC) are some of the more prominent pathogenic E. coli within the public sphere. STEC disease outbreaks are typically associated with contaminated beef, contaminated drinking water, and contaminated f...
Background and purpose: Selenium is important as a key trace element which is required by most organisms in biology. Despite its importance in cellular functions, high concentrations of selenium, particularly in the forms of selenate and selenite are highly toxic. Therefore, it is necessary to perform biogeochemical studies and develop strategies for the effective control of toxic oxyanion o...
Abstract Background and Objective: Perchloroethylene (PCE) is a chlorinated hydrocarbon used as a solvent in many industrial processes. In contaminated water and soil a great deal of PCE is found. This study aimed to determine the rate of decomposition of PCE occurred after advanced oxidation. Material and Methods: In this descriptive-analytic study conducted (2011) in public health faculty...
Due to the growth of population and industrialization, a great number of problems associated with producing industrial wastes have been created for both the environment and human beings. The industrial waste management in Brujen industrial park, located in the western part of Iran, has been investigated in this study using the environmental rapid impact assessment matrix techn...
Introduction: Lead is the major toxicant found in industrial effluent that can adversely affect environment and human health. Conventional methods for the removal of this metal from waste waters are often cost prohibitive. This study was conducted to investigate the effect ostrich feathers modified by hydrogen peroxide on lead removal from waste water. Methods: In this descriptive and practical...
OBJECTIVES The study objective was to assemble emission characteristics of the sources of the ambient volatile organic compounds (VOCs) and to elaborate methods of organizing them into the sources' chemical profiles. MATERIAL AND METHODS The UNMIX--sensor modeling method from the U.S. Environment Protection Agency (EPA)--was used to process the VOC concentration data acquired over the years 2...
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