The removal of Arsenic from drinking water and dye from industrial wastewater using a single composite system is the aim of current work. We develop a composite of reduced graphene oxide (rGO) and magnetite nanoparticles in 1:1 ratio named as IO@rGO. IO@rGO shows removal efficiency of Arsenic(V) up-to 96% for contact time 120 min at pH 7. For dye removal, we perform adsorption study of IO@rGO with three anionic dyes: Methyl Blue, Orange G (OG) and Alizarine Cyanine Green (AG). The removal efficiency for Methyl Blue at pH 7 is shown 91% in 11 min. Moreover, IO@rGO shows removal efficiency of OG up-to 71% at pH 3 for 90 min and for AG solution up-to 70% at pH 7 at 150 min following pseudo second order kinetics. Further being magnetic, after adsorption of Arsenic or Dye both adsorbent and adsorbate can be easily separated from solution by an external magnet.

使用单一复合系统从饮用水和工业废水中的染料中去除砷是当前工作的目标。我们开发了比例为1：1的还原型氧化石墨烯（rGO）和磁铁矿纳米颗粒的复合材料，称为IO @ rGO。IO @ rGO在pH为7的条件下接触时间为120分钟时，对砷（V）的去除效率高达96％，对于染料的去除，我们对IO @ rGO与三种阴离子染料的吸附性能进行了研究：甲基蓝，橙G和茜素花青绿（AG）。在11分钟内显示出对pH值为7的甲基蓝的去除效率为91％。此外，IO @ rGO在假想的二级动力学过程中显示出在pH为3的情况下对OG的去除效率高达90％达71％，在pH值为7的情况下在150 min时对AG溶液的去除效率达70％。更具有磁性