Utilization of incineration fly ash from biomass power plants for zeolite synthesis from coal fly ash by microwave hydrothermal treatment

作者：Fukasawa Tomonori; Horigome Akira; Karisma Achmad Dwitama; Maeda Norio; Huang An Ni; Fukui Kunihiro^*

来源：Advanced Powder Technology, 2018, 29(3): 450-456.

DOI：10.1016/j.apt.2017.10.022

• Biomass incineration ash
• Zeolite
• Microwave hydrothermal treatment

Potassium-type zeolite (K-zeolite) was synthesized from coal fly ash and woody biomass incineration ash by microwave hydrothermal treatment. The woody biomass incineration ash was discharged from a biomass power plant, and extracted solutions of the material had a pH range of 11.5-13.0 and a high potassium concentration; therefore, it could be employed to replace the KOH solution that is typically used in the synthesis of K-zeolites. Consequently, we successfully synthesized a K-zeolite containing phillipsite phases from coal fly ash using extracted solutions obtained from biomass incineration fly ash. The ammonium adsorption capacity of the K-zeolite synthesized by microwave hydrothermal treatment was comparable to that of K-zeolite synthesized by oil-bath hydrothermal treatment (external heating). We also confirmed that the microwave heating method could shorten the K-zeolite synthesis time compared to that required when using oil-bath heating.

• 单位
  长春大学