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Lots of ecosystems including soil and water in the world is contaminated by the Arsenic every year. The emission of Arsenic (As) to the surface and groundwater by human activities such as mining, agricultural and industrial activities is considered a global threat to the ecosystem and human health. Arsenite and arsenate are the two dominant Arsenic species in contaminated soils that are highly toxic to the human health and ecosystems. Thus, the As elimination from aqueous solution is considered as crucial issue. Among the different removal methods, Adsorption is the low cost, and high efficient technique for the As elimination from aqueous phase. In the Adsorption process, the adsorbent type is the one of the main factors of successful removal process. Application of nano-adsrobent may lead to produce less secondary waste in the Adsorption process. Moreover, bimetal nano-adsorbent due to the some properties including increasing As removal in the early time was selected as adsorbent to remove As from aqueous solution. Many researches believe that Jacobsite nanoparticles (MnFe2O4) are an effective absorbent for the removal of organic and inorganic materials. Due to the special properties of nanoparticles such as high reactivity, Jacobsite nanoparticles were selected for the Adsorption of Arsenic from water and prepared based on co-precipitation method. The prepared nanoparticles were characterized through the X-ray fluorescence (XRF), X-ray diffraction XRD, scanning electron microscopy methods (SEM), and pHpzc. According to the XRD, the obtained peaks for the synthesized adsorbent were followed by the previous researches …