TY - JOUR
T1 - Utilization of incineration fly ash from biomass power plants for zeolite synthesis from coal fly ash by hydrothermal treatment
AU - Fukasawa, Tomonori
AU - Horigome, Akira
AU - Tsu, Takayuki
AU - Karisma, Achmad Dwitama
AU - Maeda, Norio
AU - Huang, An Ni
AU - Fukui, Kunihiro
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - In Japan, the quantity of incineration fly ash discharged from biomass power plants has increased rapidly due to the feed-in tariff established by the Japanese government. The costs of disposing of this biomass incineration ash are generally high; therefore, a method must be developed to utilize this by-product. In this context, we propose the syntheses of potassium-type zeolites (K-zeolites) from biomass incineration ash and coal fly ash via a hydrothermal route, which represents a novel use for this material. As the aqueous solution extracted from biomass incineration ash contains high concentrations of potassium, it was employed to substitute the KOH solution that is typically used in the synthesis of K-zeolites from coal fly ash. Consequently, we successfully synthesized a K-zeolite, containing phillipsite and chabazite phases, from coal fly ash using the extracted solution obtained from incineration fly ash. The NH4+ adsorption capacity of our synthesized K-zeolite was comparable to that of the K-zeolite synthesized using only KOH. We also confirmed that the prepared K-zeolite exhibited higher cesium adsorption selectivity than sodium-type zeolites, which are commonly produced industrially.
AB - In Japan, the quantity of incineration fly ash discharged from biomass power plants has increased rapidly due to the feed-in tariff established by the Japanese government. The costs of disposing of this biomass incineration ash are generally high; therefore, a method must be developed to utilize this by-product. In this context, we propose the syntheses of potassium-type zeolites (K-zeolites) from biomass incineration ash and coal fly ash via a hydrothermal route, which represents a novel use for this material. As the aqueous solution extracted from biomass incineration ash contains high concentrations of potassium, it was employed to substitute the KOH solution that is typically used in the synthesis of K-zeolites from coal fly ash. Consequently, we successfully synthesized a K-zeolite, containing phillipsite and chabazite phases, from coal fly ash using the extracted solution obtained from incineration fly ash. The NH4+ adsorption capacity of our synthesized K-zeolite was comparable to that of the K-zeolite synthesized using only KOH. We also confirmed that the prepared K-zeolite exhibited higher cesium adsorption selectivity than sodium-type zeolites, which are commonly produced industrially.
KW - Biomass incineration ash
KW - Cesium adsorption capacity
KW - Coal fly ash
KW - Hydrothermal treatment
KW - Zeolite
UR - http://www.scopus.com/inward/record.url?scp=85021699614&partnerID=8YFLogxK
U2 - 10.1016/j.fuproc.2017.06.023
DO - 10.1016/j.fuproc.2017.06.023
M3 - Article
AN - SCOPUS:85021699614
SN - 0378-3820
VL - 167
SP - 92
EP - 98
JO - Fuel Processing Technology
JF - Fuel Processing Technology
ER -