Abstract
Elimination of boron species via solvent extraction with 2,2,4-trimethyl-1,3-pentandiaol was engaged in a flow-type device into which the aqueous solution dissolving diatomaceous earth, a -candidate of the resource for high-purity silicon material. The flow-type device has a 2-stage channel with 1.0 mm width, 0.10 mm depth, and 25 mm length each, and the specific interfacial area is comparable to a typical microchannel device. Residual boron content in the aqueous solution decreased to less than 0.1 ppm after the solvent extraction under the restriction of short contact duration shorter than 100 ms. In addition, the analysis with density functional theory indicated that the number of neighbor carbon on the central carbon is one of the keys for improvement of reactivity of extractant. Hence, it is suggested that the flow-type microchannel device with solvent extraction with alkyldiol extractant can be utilized as an attractive approach toward the production of high-purity silica as a source for solar-grade silicon.
| Original language | English |
|---|---|
| Title of host publication | ECS Transactions |
| Publisher | Electrochemical Society Inc. |
| Pages | 91-97 |
| Number of pages | 7 |
| Volume | 64 |
| Edition | 45 |
| ISBN (Print) | 9781607685395 |
| DOIs | |
| Publication status | Published - 2015 |
| Event | Symposium on Student Poster General Session - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico Duration: 2014 Oct 5 → 2014 Oct 9 |
Other
| Other | Symposium on Student Poster General Session - 2014 ECS and SMEQ Joint International Meeting |
|---|---|
| Country | Mexico |
| City | Cancun |
| Period | 14/10/5 → 14/10/9 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Elimination of boron from soluble silica via solvent extraction with 2,2,4-trimethyl-1,3-pentanediol using a multistage flow-type reactor. / Matsuo, Nobufumi; Ishihara, Takafumi; Oyanagi, Takahiro; Nakajima, Kazuki; Kunimoto, Masahiro; Fukunaka, Yasuhiro; Homma, Takayuki.
ECS Transactions. Vol. 64 45. ed. Electrochemical Society Inc., 2015. p. 91-97.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Elimination of boron from soluble silica via solvent extraction with 2,2,4-trimethyl-1,3-pentanediol using a multistage flow-type reactor
AU - Matsuo, Nobufumi
AU - Ishihara, Takafumi
AU - Oyanagi, Takahiro
AU - Nakajima, Kazuki
AU - Kunimoto, Masahiro
AU - Fukunaka, Yasuhiro
AU - Homma, Takayuki
PY - 2015
Y1 - 2015
N2 - Elimination of boron species via solvent extraction with 2,2,4-trimethyl-1,3-pentandiaol was engaged in a flow-type device into which the aqueous solution dissolving diatomaceous earth, a -candidate of the resource for high-purity silicon material. The flow-type device has a 2-stage channel with 1.0 mm width, 0.10 mm depth, and 25 mm length each, and the specific interfacial area is comparable to a typical microchannel device. Residual boron content in the aqueous solution decreased to less than 0.1 ppm after the solvent extraction under the restriction of short contact duration shorter than 100 ms. In addition, the analysis with density functional theory indicated that the number of neighbor carbon on the central carbon is one of the keys for improvement of reactivity of extractant. Hence, it is suggested that the flow-type microchannel device with solvent extraction with alkyldiol extractant can be utilized as an attractive approach toward the production of high-purity silica as a source for solar-grade silicon.
AB - Elimination of boron species via solvent extraction with 2,2,4-trimethyl-1,3-pentandiaol was engaged in a flow-type device into which the aqueous solution dissolving diatomaceous earth, a -candidate of the resource for high-purity silicon material. The flow-type device has a 2-stage channel with 1.0 mm width, 0.10 mm depth, and 25 mm length each, and the specific interfacial area is comparable to a typical microchannel device. Residual boron content in the aqueous solution decreased to less than 0.1 ppm after the solvent extraction under the restriction of short contact duration shorter than 100 ms. In addition, the analysis with density functional theory indicated that the number of neighbor carbon on the central carbon is one of the keys for improvement of reactivity of extractant. Hence, it is suggested that the flow-type microchannel device with solvent extraction with alkyldiol extractant can be utilized as an attractive approach toward the production of high-purity silica as a source for solar-grade silicon.
UR - http://www.scopus.com/inward/record.url?scp=84930260828&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84930260828&partnerID=8YFLogxK
U2 - 10.1149/06445.0091ecst
DO - 10.1149/06445.0091ecst
M3 - Conference contribution
AN - SCOPUS:84930260828
SN - 9781607685395
VL - 64
SP - 91
EP - 97
BT - ECS Transactions
PB - Electrochemical Society Inc.
ER -