Study of the health threatening mercury effective parameters for its removal from the aqueous solutions by using activated carbons

A serious environmental threat from heavy metal ion pollution, especially mercury, has generated a great deal of attention in recent years. Mercury is one of the priority pollutant listed by USEPA as it can easily pass the blood-brain barrier and affect the fetal brain. High concentration of Hg (II) causes impairment of pulmonary function and kidney, chest pain and dyspnoea. Consequently, removal of mercury in water and wastewater assumes importance. In this review paper, we have evaluated the efforts which have been done for controlling the mercury emissions from aqueous solutions. According to the EPA agency, the tolerance limit for Hg (II) for discharge into inland surface water is 10 mu g/l and for drinking water is 1 mu g/l. Mercury (Hg) is one of the heavy metals of concern and has been found in the waste waters coming from manufacturing industry, and natural sources. Among several types of technology for removing of Hg in water (chemical precipitation, reverse osmosis, ion-exchange, etc.), adsorption is one of most frequently used. It is a complex process involving physical, chemical, and electrical interactions at sorbent surfaces. Therefore, in this study will investigate effective parameters such as pH, initial concentration and surface characteristic. Hafshejani MK, Khandani F, Heidarpour R, Sedighpour A, Fuladvand H, Shokuhifard R, Arad A. Study of the health threatening mercury effective parameters for its removal from the aqueous solutions by using activated carbons. Life Sci J 2012;9(4):1789-1791] (ISSN:1097-8135). http://www.lifesciencesite.com. 27

Impact of solar energy application on warming, health caring and pollution prevention in Iran

Abstract: Solar energy is cited as a clean alternative to fossil fuels. Solar panels generate energy without producing ambient pollution. Therefore, there is no argument that pure solar energy is a clean, green energy source. The result in the present paper shows that by using renewable energy special sun light energy, considerable amounts of Greenhouse polluting gasses are avoided. The use of conventional energy in factories and vehicles in has been a major source of pollution health hazards. These hazardous pollutants, such as suspended particle, heavy metal, organic matter and carbon monoxide (CO) adversely affect health. Although solar energy has significant environmental benefits in comparison to the fossil fuel, some problems has be seen in this way. The important advantage is related to the reduced CO2 emission and air pollution prevention and it can be said this method for producing energy which has some economic benefit. The supplies of the fossil fuels used to generate much of its shrink, the cost of this energy is increasing worldwide. Solar energy allows human to generate its own energy in cheap way. To the best of our knowledge, the comparison of two categories of energy and investigation in the benefits of solar energy as a new way in Iran are investigated to prevent our environmental and natural sources