Highly Efficient Regeneration Method for Analginum-Saturated Activated Carbon

Abstract

The regeneration of Analginum-saturated powdered activated carbon (PAC) using solvent extraction and thermal regeneration was investigated in detail to get the optimal conditions. In the solvent extraction step, various influence factors, such as pH of solvent, treatment time, and temperature were studied respectively. In addition, the optimal conditions of thermal regeneration were determined to be 500 °C, 120 min, with blowing N2 gas at 80 mL/min. Under the optimized conditions, the regeneration efficiency of spent PAC reached as high as 95.1%. This study provides a useful reference of regeneration method for other spent activated carbons.