Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (4): 659-664.

• 分离科学与工程 • 上一篇    下一篇

微生物-化学耦合法再生活性炭的研究

何文会1; 吕国诚1; 崔婕2; 吴丽梅1; 廖立兵1   

  1. 1 School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China 2 Sinoma Geological Engineering Exploration Academy, Beijing 100176, China
  • 收稿日期:2011-10-26 修回日期:2012-05-07 出版日期:2012-08-28 发布日期:2012-05-07

Regeneration of spent activated carbon by yeast and chemical method

HE Wenhui1; LÜ Guocheng1; CUI Jie2; WU Limei1; LIAO Libing1   

  1. 1 School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China 2 Sinoma Geological Engineering Exploration Academy, Beijing 100176, China
  • Received:2011-10-26 Revised:2012-05-07 Online:2012-08-28 Published:2012-05-07

摘要: In this study, spent activated carbon (AC) saturated with caramel was regenerated by using yeast and NaOH. The efficiency of regeneration was evaluated under parameters such as amount, treatment time, temperature, pH value, stirring temperature of yeast and NaOH concentration. The optimum condition for AC regeneration was 8 h for yeast treatment time, 35 °C for 0.075% yeast culture temperature, a pH value of 6 for the yeast dealing with the spent AC, 90 °C for NaOH stirring temperature of AC and 6% NaOH for washing after the spent AC was treated by yeast. Under these conditions, methylene blue (MB) adsorption was 213 mg•g?1 in comparison with 60 mg•g?1 of spent AC. The micro structure and surface area of the regenerated AC were characterized by scanning electron mi-croscope (SEM) and N2 sorption, respectively. The pore size distributions of virgin and regenerated AC were ana-lyzed by means of H-K equation, resulting in a mean pore diameter of 1.28 nm and a pore volume of 1.13 cm3•g?1. This study provides data for theoretical support of the AC regeneration technology.

关键词: yeast, NaOH, activated carbon, regeneration

Abstract: In this study, spent activated carbon (AC) saturated with caramel was regenerated by using yeast and NaOH. The efficiency of regeneration was evaluated under parameters such as amount, treatment time, temperature, pH value, stirring temperature of yeast and NaOH concentration. The optimum condition for AC regeneration was 8 h for yeast treatment time, 35 °C for 0.075% yeast culture temperature, a pH value of 6 for the yeast dealing with the spent AC, 90 °C for NaOH stirring temperature of AC and 6% NaOH for washing after the spent AC was treated by yeast. Under these conditions, methylene blue (MB) adsorption was 213 mg•g?1 in comparison with 60 mg•g?1 of spent AC. The micro structure and surface area of the regenerated AC were characterized by scanning electron mi-croscope (SEM) and N2 sorption, respectively. The pore size distributions of virgin and regenerated AC were ana-lyzed by means of H-K equation, resulting in a mean pore diameter of 1.28 nm and a pore volume of 1.13 cm3•g?1. This study provides data for theoretical support of the AC regeneration technology.

Key words: yeast, NaOH, activated carbon, regeneration