Citation: MA Xi-Jun, XIE Xing-Yong, JIANG Xiao-Wu, WU Zheng-Yan, ZHANG Jing, . Adsorption Property of Humic Acid in Micro-polluted Water by Organic-Inorganic-Magnetic Resin[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(4): 563-569. doi: 10.11895/j.issn.0253-3820.171322 shu

Adsorption Property of Humic Acid in Micro-polluted Water by Organic-Inorganic-Magnetic Resin

MA Xi-Jun ^1, ,
XIE Xing-Yong ¹ ,
JIANG Xiao-Wu ¹ ,
WU Zheng-Yan ¹ ,
ZHANG Jing ¹ ,
² ,
¹

1.
Huaiyin Institute of Technology, Huai'an 223003, China;
2.
Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China

Received Date: 11 October 2017
Revised Date: 6 February 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (No.41301048), the Science and Technology Project of Huai'an, China (No.2015008) and the Social Development Projects of Huai'an, China (No.HAS2014020).

Nanocomposites of magnetic attapulgite-resin (MPR) were prepared for adsorption of humic acid (HA). This nano adsorbent was characterized by X-ray diffractometer (XRD), Fourier Transform Infrared (FTIR) spectroscopy and Scanning Electron Microscope (SEM). The adsorption property of HA onto MPR was investigated. Experimental results indicated that MPR prepared by the ultrasonic dispersion exhibited a much better adsorption capacity than that of the resin and attapulgite. The effective specific surface area of the MPR was illustrated to be 674.31 m²/g. With a initial concentration of HA of 14.87 mg/L, the adsorption capacity reached 13 mg/g. Besides, it was found that the adsorption capacity increased with the contact time, and it reached the equilibrium at 233 min. The adsorption kinetics and isotherms could be well described by pseudo-second-order model and Langmuir isotherm model, respectively. Thermodynamic parameters (ΔH^θ, ΔS^θ, and ΔG^θ) indicated that the adsorption was spontaneous and exothermic. Acetic acid had obvious influence on the adsorption of HA on this complex resin. The adsorbent could be reused six times without obvious decrease of adsorption performance.
- Magnetic resin,
- Attapulgite,
- Humic acid,
- Adsorption kinetics,
- Isotherm
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