نتایج جستجو برای: cause of removal
تعداد نتایج: 21182767 فیلتر نتایج به سال:
Backgrounds & objectives: Heavy metals, such as chromium, are the most common pollutants usually found in high concentrations in industrial wastewater and cause damages to aquatic environments and endanger the health of living organisms, especially human. Therefore, the purpose of this research was to investigate the photocatalytic removal of hexavalent chromium from aqueous solution using UV/Z...
Reductionism is the idea that all of the complex and apparently disparate things we observe in the world can be explained in terms of universal principles governing their common ultimate constituents: that physics is the theory of everything. Antireductionism comes in two varieties: epistemological and ontological. Epistemological antireductionism holds that, given our finite mental capacities,...
Background and Objectives: Sulfate is one of the chemical pollutants in water that can cause adverse health effects such as digestive and blood problems at high concentrations in humans. Conversion of sulfate to substances such as hydrogen sulfide can corrode metal pipes. Therefore, the aim of this study was to investigate the effect of electrochemical sulfate removal using a sandwich panel car...
Background: Heavy metals, even at low concentrations, are harmful to human health and environment. Cadmium as a heavy metal is highly toxic and can cause serious threat to living organisms. This research was designed to evaluate the adsorption potential of modified magnetic iron nanoparticles by 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ligand for the removal of cadmium ions from water solu...
Background & Aims of the Study: Antibiotics are pharmaceutical compounds which are stable in the environment and their discharge without treatment can cause pollution of the environment. The current study aimed to assess the efficicacy of cupric oxide nanoparticles (CuO-NPs) as another kind of adsorbent for the removal of penicillin G (PG) from its aqueous media, as well as kinetic analysis of ...
An investigation on the cause of the removal of mandibular impacted third molar and its relationship with various types of impaction Dr. H. Mahmood Hashmei* - Dr. M. Seyed ashrafi** *- Associate Professor of Oral and Maxillofacial Surgery Dept. – Faculty of Dentistry – Tehran University of Medical Sciences. **- Dentist. Background and Aim: Impacted third molars, due to their extreme importance,...
Introduction: According to the United States Environmental Protection Agency (USEPA), Cadmium is a critical leading pollutant. Priority pollutants are pollutants that can cause Cancer, Mutagenesis, and Malformation in exposed organisms. The aim of this study was to evaluate the effect of sunflower residuals on removal of cadmium from aqueous solutions. Methods: This experimental study was ...
Abstract Background and purpose: Increasing industrial activities and the subsequent discharge of untreated wastewater containing dye to aqueous environment can cause problems such as reducing the sun light penetration, creating anaerobic conditions, allergy and cancer. Adsorption is considered as one of the most efficient and effective methods for dye removal. The aim of this study was to m...
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