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Adsorption of Resorcinol on Activated Carbon Under Supergravity Field
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(1. Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology,North University of China, Taiyuan 030051, China; 2. Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, Taiyuan 030051, China)

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    Abstract:

    To solve the problems of large volume and low adsorption rate of traditional adsorption equipment, the resorcinol wastewater was simulated and treated using rotating packed bed (RPB) as adsorption equipment, activated carbon as adsorbent. The effects of supergravity factor, pH value, liquid flow, temperature, and initial resorcinol concentration on the removal efficiency of resorcinol were investigated, and the adsorption isothermal equilibrium line and kinetic data were measured and the comparison with the removal efficiency of resorcinol obtained by fixed bed and magnetic strrer under approprite operating conditions were performed. Results show that the adsorption equilibrium relation mainly obeys Freundlich model, the heat of adsorption is 14.65 kJ·mol-1. The appropriate operating conditions obtained are: liquid flow of 50 L·h-1, supergravity factor 41.30, pH=5, temperature 20 ℃, initial concentration of wastewater of 900 mg·L-1 and adsorption time 2 h. In this case, the removal efficiency of resorcinol reaches 96.86%. Under the same operating conditions, compared with the fixed bed and magnetic stirrers, the removal efficiency by RPB increases by about 20% and 14%, respectively. The adsorption process is mainly consistent with the pseudo-second order kinetic model. The adsorption rate constant of the adsorption process reaches 2.576×10-3 which is 1.626 and 1.413 times higher than the conventional adsorption method of the fixed bed and magnetic stirrer, respectively.

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郭芳,刘有智,郭强.超重力场下活性炭吸附间苯二酚废水[J].含能材料,2018,26(4):339-345.
GUO Fang, LIU You-zhi, GUO Qiang. Adsorption of Resorcinol on Activated Carbon Under Supergravity Field[J]. Chinese Journal of Energetic Materials,2018,26(4):339-345.

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History
  • Received:June 08,2017
  • Revised:October 18,2017
  • Adopted:
  • Online: April 16,2018
  • Published: April 25,2018