Novel Carbon Porous Material with Nanostructural for Separation of Arsenic(III) from Water with Highest Adsorption Capacity
International Journal of Environmental Chemistry
Volume 1, Issue 1, June 2017, Pages: 19-22
Received: Mar. 26, 2017;
Accepted: Apr. 10, 2017;
Published: May 24, 2017
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Hossein Ghafourian, Department of Environmental Engineering, Islamic Azad University, Tehran North Branch, Tehran, Iran
Mohammad Rabbani, Department of Environmental Engineering, Islamic Azad University, Tehran North Branch, Tehran, Iran
Zahra Ghazanfari, Department of Environmental Engineering, Islamic Azad University, Tehran North Branch, Tehran, Iran
Arsenic is a heavy metal and exists in an oxidation state of -3, 0, +3 or +5 which the As (III) is more toxic than other. Due to the extreme toxicity of As(III) in drinking water many research was done to find natural and economical adsorber for removing it from the water. Porous carbonaceous nanostructural materials have been widely used in the adsorption of contaminated water, gas storage, separation, and purification. By special experimental method were produced in Beshel Activated Carbon Industry (BACI) a new carbon adsorber material (BACI-2017) with nano pores, for removal of As (III) in contaminated water. Because of existing an appropriate pores and surface area, the new adsorber has shown a high tendency for adsorption of Arsenic (III) from water. Experiment: Two different particle sizes, mesh 4x8 and mesh 100 and greater than 100 mesh, were used. The separation of As(III) were done with 0.5 gram of BACI-2017 with mesh 4x8 and 0.1 gram of BACI-2017 with 100 mesh and greater than100 mesh and six different concentrations of As(III) solution, 5, 10, 20, 30, 50, 100 and 100, 200, 300, 400, 500, 1000 ppm respectively. In all experiments the pH was about 8.5. The results showed that the maximum adsorption capacity of As(III) calculated from Langmuir isotherm was found 41.48 mg/g for 0.5 gram of GRG-2017 with mesh 4x8 and 0.1 gram of BACI-2017 calculated from Freundlich isotherm was 455 mg/g for 100 mesh and greater than 100 mesh. The contact time in all experiments was 15 minutes. The study showed that the adsorption capacity of arsenic is strongly depending on the particle size of adsorber. The results: The BACI-2017 nanopores adsorber for removal of As (III) from aqueous solution shown that the As (III) can be separated from water with a high capacity of 455 mg/g or 455 g of As (III) per kg of adsorber BACI-2017. This is a world record with highest adsorption capacity in comparison with other studies till now, March 2017.
Novel Carbon Porous Material with Nanostructural for Separation of Arsenic(III) from Water with Highest Adsorption Capacity, International Journal of Environmental Chemistry.
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