Author(s)

Liangcheng Xie¹, Kangle Ding^1,2,3*, Yan Liu⁴, Mei Zou¹, Chao Han¹

¹College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China.
²Key Laboratory of Exploration Technologies for Oil and Gas Resources (Yangtze University), Ministry of Education, Jingzhou, China.
³Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral, Shandong University of Science and Technology, Qingdao, China.
⁴Institute of Mud Logging Technology and Engineering, Yangtze University, Jingzhou, China.

The corncob hydrochar is prepared by using a stainless autoclave at 230°C for 8 h. The products are characterized by elemental analyzer, Fourier Transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and scanning electron microscope (SEM). The effects of hydrochar dosage, pH, adsorption time and phenol concentration on the adsorption performance of hydrochar are investigated by means of single-factor experimental analysis. Based on the experiments the adsorption thermodynamic and kinetics are tentatively discussed. The results show that abundant oxygen-containing functional groups are scattered on the surface of the corncob hydrochar. The adsorption kinetics of phenol on the hydrochar corresponds well with pseudo-second-order kinetic model. Thermodynamic studies indicate that Freundlich adsorption isotherm model is much better than Langmuir model in describing the adsorption of phenol on the corncob hydrochar at 25°C - 45°C. This study provides scientific basis for the development of cheap and efficient adsorbents for the removal of phenols derived from oilfield wastewater.

Corncob, Hydrochar, Phenol, Adsorption, Kinetics, Thermodynamics

Xie, L. , Ding, K. , Liu, Y. , Zou, M. and Han, C. (2019) Experimental, Thermodynamic and Kinetic Studies for the Adsorption of Phenolic Compounds Derived from Oilfield Wastewater by the Corncob Hydrochar. Open Journal of Yangtze Oil and Gas, 4, 285-300. doi: 10.4236/ojogas.2019.44023.