TY - JOUR
T1 - Resource recovery of waste incineration fly ash
T2 - Synthesis of tobermorite as ion exchanger
AU - Yao, Zhidong
AU - Tamura, Chikashi
AU - Matsuda, Motohide
AU - Miyake, Michihiro
N1 - Funding Information:
This work was supported by the Kurita Water and Environment Foundation. The authors also thank Mr. Humio Kusano from the Industrial Technology Center of Okayama Prefecture for his technical assistance in measurements of ICP emission spectroscopy and element analysis.
PY - 1999/11
Y1 - 1999/11
N2 - Tobermorite was synthesized successfully from waste incineration fly ash by hydrothermal treatment in the presence of sodium hydroxide solution. The tobermorite synthesis was examined as a function of reaction temperature, time, and NaOH concentration. The formation of tobermorite was identified in all of the fly ash treated with NaOH at 180 °C, followed by the minor generations of sodalite and cancrinite phases with increasing NaOH concentration and extending reaction time. The NaOH-treated fly ash revealed the uptake behaviors for Cs+ and NH4+, whereas the fly ash untreated with NaOH solution did not show that. The uptake amounts of resulting products were also determined: 0.40 mmol/g for Cs+ and 0.35 mmol/g for NH4+ in the fly ash treated with 2.0 M NaOH at 180 °C for 20 h.
AB - Tobermorite was synthesized successfully from waste incineration fly ash by hydrothermal treatment in the presence of sodium hydroxide solution. The tobermorite synthesis was examined as a function of reaction temperature, time, and NaOH concentration. The formation of tobermorite was identified in all of the fly ash treated with NaOH at 180 °C, followed by the minor generations of sodalite and cancrinite phases with increasing NaOH concentration and extending reaction time. The NaOH-treated fly ash revealed the uptake behaviors for Cs+ and NH4+, whereas the fly ash untreated with NaOH solution did not show that. The uptake amounts of resulting products were also determined: 0.40 mmol/g for Cs+ and 0.35 mmol/g for NH4+ in the fly ash treated with 2.0 M NaOH at 180 °C for 20 h.
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U2 - 10.1557/JMR.1999.0601
DO - 10.1557/JMR.1999.0601
M3 - Article
AN - SCOPUS:0033221362
SN - 0884-2914
VL - 14
SP - 4437
EP - 4442
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 11
ER -