Environmental Health
Mohsen Arbabi; Nazila Golshani
Volume 3, Issue 3 , Summer 2016, , Pages 283-293
Abstract
Background and aims: Nowadays heavy metals are the environmental priority pollutants and are becoming as the most serious environmental problems. In recent years removing those from diverse industrial effluents and metal cleaning have been studied. The aim of the present study was to investigate the ...
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Background and aims: Nowadays heavy metals are the environmental priority pollutants and are becoming as the most serious environmental problems. In recent years removing those from diverse industrial effluents and metal cleaning have been studied. The aim of the present study was to investigate the different methods for cooper removal of cooper ions from industrial wastewater. Methods: This study was a review research. Data were collected from different database in various articles. The various methods for cooper removal from industrial effluents were compared to each other. Results: The present study showed the various methods for cooper removal from industrial wastewater including chemical precipitation, ion exchange, membrane filtration, flotation, electrochemical treatments, coagulation/flocculation and adsorption. High efficiency, cost-effectiveness and easy handling are important factors in the selection of the most suitable treatment systems for industrial effluents. Conclusion: Adsorption is recommended as an effective and economical method for maintaining of cooper ions from aqueous industrial wastes because of high efficiency, cost-effectiveness and simplicity.
Environmental Health
Mohsen Arbabi; Sara Hemati; Masoud Amiri
Volume 2, Issue 2 , Spring 2015, , Pages 105-109
Abstract
Background and aims: The removing of (potential) toxic heavy metal ions from sewage, especially in industrial and mining waste effluents, has been widely studied in recent years. The aim of present study was to investigate the various methods for lead removal of lead ions from industrial wastewater. ...
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Background and aims: The removing of (potential) toxic heavy metal ions from sewage, especially in industrial and mining waste effluents, has been widely studied in recent years. The aim of present study was to investigate the various methods for lead removal of lead ions from industrial wastewater. Methods: This study was a review research. Data were collected through different databases in various articles. The various methods for lead removal from industrial wastewater were compared to each other. Results: The present study showed the various methods for lead removal from industrial wastewater including chemical precipitation, electrochemical reduction, ion exchange, reverse osmosis, membrane separation, and adsorption. Technical applicability, plant simplicity and cost-effectiveness are the key factors that play major roles in the selection of the most suitable treatment system for inorganic effluents. Conclusions: Adsorption is proposed as an economical and effective method for the retention of lead ions from aqueous industrial wastes because it is simple, effective and economic in removal of heavy metals from aqueous solution.
Environmental Health
Mohsen Arbabi; Neda Masoudipour; Masoud Amiri
Volume 2, Issue 1 , Winter 2015, , Pages 44-49
Abstract
Water resource scarcity, population growth, pollution of surface and groundwater by discharging toxic wastewater and subsequent diseases may raise the necessity of reusing and treatment of wastewater. Cyanide is one of the toxic materials which can be found in some industrial wastewaters. Strict laws ...
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Water resource scarcity, population growth, pollution of surface and groundwater by discharging toxic wastewater and subsequent diseases may raise the necessity of reusing and treatment of wastewater. Cyanide is one of the toxic materials which can be found in some industrial wastewaters. Strict laws set by international bodies have forced industries to work on developing efficient cyanide removal processes. In addition, at short-term exposure, cyanide could result in rapid breathing, tremors and other neurological effects, but long term exposure it may cause weight loss, thyroid effects, nerve damage and death. Skin contact with liquids containing cyanide may also produce irritation and sores. The application of old methods like alkaline chlorination process has become limited due to toxic nature of intermediate and by-products, and unique methods, such as biological, the iron cyanide precipitation, SO2/Air, acidification/volatilization and reneutralization, ion exchange and hydrogen peroxide processes are mainly developed and used by their respective companies. In this paper, the negative effects of cyanide on health and its industrial manufacturers as well as cyanide removal processes are briefly discussed.