Magentite nanoparticle for arsenic remotion.

8th International Congress of Engineering Physics

物理学;工业技术

Viltres, H.^1,2 ; Odio, O.F.^3 ; Borja, R.^4 ; Aguilera, Y.^2 ; Reguera, E.^1

Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada-Unidad Legaria, Instituto Politécnico National, Ciudad de México, Distrito Federal, Mexico^1

Instituto Superior de Tecnologías y Ciencias Aplicadas, La Habana, Cuba^2

Instituto de Ciencia y Tecnología de Materiales, Universidad de la Habana, La Habana, Cuba^3

Centro de Nanociencias y Micro-Nanotecnologías, Instituto Politécnico Nacional, Ciudad de México, Mexico^4

关键词: Adsorption of arsenics;    Arsenic concentration;    Coprecipitation method;    Magnetic nano-particles;    Narrow size distributions;    Precipitating agents;    Removal of arsenics;    World Health Organization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/792/1/012078/pdf
DOI  :  10.1088/1742-6596/792/1/012078

学科分类：工业工程学

来源: IOP

【 摘 要 】

Inorganic As (V) and As (III) species are commonly found in groundwater in many countries around the world. It is known that arsenic is highly toxic and carcinogenic, at present exist reports of diverse countries with arsenic concentrations in drinking water higher than those proposed by the World Health Organization (10 μg/L). It has been reported that adsorption strategies using magnetic nanoparticles as magnetite (3and FeCl2as metal source and NaOH aqueous solution as precipitating agent. Magnetite nanoparticles synthesized were put in contact with As2O3and As2O5solutions at room temperature to pH 4 and 7. The nanoparticles were characterized by FT-IR, DRX, UV-vis, and XRF. The results showed that synthesized magnetite had an average diameter of 11 nm and a narrow size distribution. The presence of arsenic on magnetite nanoparticles surface was confirmed, which is more remarkable when As (V) is employed. Besides, it is possible to observe that no significant changes in the band gap values after adsorption of arsenic in the nanoparticles.