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首页> 外文期刊>Journal of Molecular Liquids >Cigarette soot activated carbon modified with Fe 3O 4 nanoparticles as an effective adsorbent for As(III) and As(V): Material preparation, characterization and adsorption mechanism study
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Cigarette soot activated carbon modified with Fe 3O 4 nanoparticles as an effective adsorbent for As(III) and As(V): Material preparation, characterization and adsorption mechanism study

机译：用FE 3 O 4 纳米粒子作为（）的有效吸附剂（ III）和（v）：材料制备，表征和吸附机制研究

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AbstractThe presence of high concentration of As(III) (arsenite) and As(V) (arsenate) in water system creates severe health problems to the human being and other aquatic animals. In this research, a novel Fe3O4/CSAC adsorbent was prepared by the thermal method using cigarette soot activated carbon (CSAC) as a template. Different instrumental techniques like XRD, SEM, EDX, TEM, VSM, BET, Zeta potential and FTIR study were used to confirm the formation of Fe3O4/CSAC. This material showed high surface area (575.604m2/g), low pore size (6.8nm), small particle size (less than 10nm) and good magnetic properties (10.77emu/g), which made the material highly effective for arsenic removal. The adsorption of arsenic was highly pH dependent and 91% and 93% of As(III) and As(V) were removed by this adsorbent at pH7 and 3. The adsorption process followed the Langmuir isotherm model with the uptake capacities of 80.99 and 107.96mg/g for As(III) and As(V), respectively. The adsorption data were best fitted to the pseudo second order kinetics model with the rapid adsorption in just 90min. In presence of Cl?, NO3?, SO42?, CO32–and PO43?anions also, the Fe3O4/CSAC showed the significant removal of As(III) and As(V). About 89% and 91% of As(III) and As(V)
机译：<！[cdata [ 抽象 在水中存在高浓度的（III）（arsenite）和（v）（武器）系统对人类和其他水生动物产生严重的健康问题。在本研究中，一种新型FE 3 O 4 / CSAC吸附剂由热量制备用香烟烟灰活性炭（CSAC）作为模板的方法。不同的仪器技术，如XRD，SEM，EDX，TEM，VSM，BET，Zeta潜力和FTIR研究用于确认FE 3 O 4 / CSAC。该材料显示出高表面积（575.604M 2 / g），低孔径（6.8nm），小粒径（小于10nm）和良好的磁性（10.77emu / g），这使得材料对砷的去除非常有效。砷的吸附是高度的pH依赖性，并在pH7和3中通过该吸附剂除去91％和93％的AS（iii）和（v），吸附过程跟随Langmuir等温线模型80.99和107.96 Mg / g分别为（iii）和As（v）。吸附数据最适合伪二阶动力学模型，在短短90分钟内快速吸附。在CL ，NO 3 ？，所以 4 2？，co 3 2 - 和po 4 3？阴离子也，fe 3 o 4 / CSAC表现出如（iii）和（v）的显着移除。约为（iii）和（v）的约89％和91％

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