Abstract
A chemical recycling method by using phase separation was applied to municipal waste slags. Glasses were prepared from incineration ash and ash-melted slag, where B2O3 was added to promote phase separation. The glasses were heat-treated at temperatures higher than their glass transition temperatures, and they were soaked in hydrochloric acid, leaching CaO, Fe2O3, K2O, and S. Transparent and colorless solids containing ca. 80 mass% of SiO2 were successfully obtained as residues. It was suggested that phase separation took place not in the heat-treatment but in the vitrification process, and further characterizations are however required to investigate the phenomena at microscopic levels in the recycling processes.
| Original language | English |
|---|---|
| Pages (from-to) | 1195-1198 |
| Number of pages | 4 |
| Journal | Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan |
| Volume | 117 |
| Issue number | 1371 |
| Publication status | Published - Nov 2009 |
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Keywords
- Chemical recycling
- Glass
- Municipal waste slag
- Phase separation
- Waste recycling
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
- Chemistry(all)
- Condensed Matter Physics
Cite this
Chemical recycling of municipal waste slag by using phase separation. / Nanba, Tokuro; Kuroda, Yutaro; Sakida, Shinichi; Benino, Yasuhiko.
In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 117, No. 1371, 11.2009, p. 1195-1198.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Chemical recycling of municipal waste slag by using phase separation
AU - Nanba, Tokuro
AU - Kuroda, Yutaro
AU - Sakida, Shinichi
AU - Benino, Yasuhiko
PY - 2009/11
Y1 - 2009/11
N2 - A chemical recycling method by using phase separation was applied to municipal waste slags. Glasses were prepared from incineration ash and ash-melted slag, where B2O3 was added to promote phase separation. The glasses were heat-treated at temperatures higher than their glass transition temperatures, and they were soaked in hydrochloric acid, leaching CaO, Fe2O3, K2O, and S. Transparent and colorless solids containing ca. 80 mass% of SiO2 were successfully obtained as residues. It was suggested that phase separation took place not in the heat-treatment but in the vitrification process, and further characterizations are however required to investigate the phenomena at microscopic levels in the recycling processes.
AB - A chemical recycling method by using phase separation was applied to municipal waste slags. Glasses were prepared from incineration ash and ash-melted slag, where B2O3 was added to promote phase separation. The glasses were heat-treated at temperatures higher than their glass transition temperatures, and they were soaked in hydrochloric acid, leaching CaO, Fe2O3, K2O, and S. Transparent and colorless solids containing ca. 80 mass% of SiO2 were successfully obtained as residues. It was suggested that phase separation took place not in the heat-treatment but in the vitrification process, and further characterizations are however required to investigate the phenomena at microscopic levels in the recycling processes.
KW - Chemical recycling
KW - Glass
KW - Municipal waste slag
KW - Phase separation
KW - Waste recycling
UR - http://www.scopus.com/inward/record.url?scp=70449573009&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70449573009&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:70449573009
VL - 117
SP - 1195
EP - 1198
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1371
ER -