通过 FeO 纳米颗粒功能化活性炭增强对废水中染料的吸附。
Enhanced dyes adsorption from wastewater via FeO nanoparticles functionalized activated carbon.
机构信息
Department of Physics, Beihang University, Beijing 100083, China.
Department of Physics, Beihang University, Beijing 100083, China; Physics Department, College of Science, Northeastern University, Boston, MA 02115, USA.
出版信息
J Hazard Mater. 2019 Jul 5;373:397-407. doi: 10.1016/j.jhazmat.2019.03.103. Epub 2019 Mar 25.
FeO nanoparticles functionalized activated carbon (FeO/AC) as an adsorbent was prepared and used for fast and effectively removing rhodamine B (RhB) and methyl orange (MO) from aqueous solution. Its physical and chemical properties characterized indicate that the adsorbent possesses abundant surface functional groups, sensitive magnetic response and enhanced specific surface area. Batch experiments were carried out to investigate the adsorption capacity and mechanisms. The obtained experimental data fitted well with the general-order kinetic equation and Liu's isotherm model with a maximum adsorption capacity of 182.48 mg g for RhB and 150.35 mg g for MO, respectively. The thermodynamic parameter was analyzed further and it showed an exothermic and spontaneous adsorption process. This composite with high adsorption efficiency and rapid magnetic separation can be a promising and recyclable adsorbent for practical wastewater treatment and purification processes.
FeO 纳米颗粒功能化活性炭（FeO/AC）作为一种吸附剂被制备出来，并用于快速有效地从水溶液中去除罗丹明 B（RhB）和甲基橙（MO）。其物理化学性质的表征表明，该吸附剂具有丰富的表面官能团、敏感的磁响应和增强的比表面积。进行了批量实验以研究吸附容量和机制。获得的实验数据与通用阶动力学方程和刘的等温模型拟合良好，对 RhB 的最大吸附容量为 182.48mg/g，对 MO 的最大吸附容量为 150.35mg/g。进一步分析了热力学参数，表明这是一个放热和自发的吸附过程。这种具有高吸附效率和快速磁分离的复合材料有望成为一种实用的废水处理和净化过程的可再生吸附剂。
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