Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production

Yelchur Venkata Akash; Masaki Mimura; Masahiro Kunimoto; Yasuhiro Fukunaka; Takayuki Homma

doi:10.1149/08010.1441ecst

Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production

Yelchur Venkata Akash, Masaki Mimura, Masahiro Kunimoto, Yasuhiro Fukunaka, Takayuki Homma

School of Advanced Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

As one of the most cost-effective methods to produce solar-grade silicon (SOG-Si), purification of silica solution by extracting its impurities through wet chemical processes has been proposed. This paper reports on the design of channel type reactor for liquid-liquid extraction to purify silica solution, focusing particularly on the extraction of B (boric acid) in aqueous phase with 2,2,4-trimethyl-1,3-pentanediol (TMPD) in organic phase. The reactor fabricated by 3D printing technology was designed to have two characteristic structures: (i) a throat structure that shows gradually diverging part after converging near Y shaped inlets and (ii) obstacles structure on downstream. Two solutions were made to contact with each other by turbulent mixing around the throat structure, causing small droplets formation that was dispersed and retained efficiently even on downstream by obstacles structure. This droplet dispersion shortens diffusion distance of boric acid to meet TMPD at the liquid-liquid interface, providing efficient mass transfer. At higher flow rate i.e., 380 ml/min, the extraction efficiency was 97.43% after the multi stage process. The results suggest that the channel type reactor designed here is profitable for elimination of impurities, such as B or P, in silica solution to produce SOG-Si.

Original language	English
Title of host publication	ECS Transactions
Editors	A. P. Abbott, R. Alkire, P. Allongue, T. J. Anderson, P. N. Bartlett, M. Bayachou, S. Bhansali, N. Birbilis, A. B. Bocarsly, C. Bock, O. V. Boltalina, S. Brankovic, R. Buchheit, D. A. Buttry, S. Calabrese Barton, M. T. Carter, V. Chaitanya, G. T. Cheek, Z. Chen, D. Chidambaram, B. A. Chin, J. W. Choi, D. Chu, D. E. Cliffel, H. Deligianni, V. Di Noto, N. Dimitrov, M. Doeff, E. A. Douglas, T. Druffel, K. Edstrom, J. M. Fenton, J. Fergus, J. Fransaer, Y. Fukunaka, D. Guyomard, H. Hamada, L. M. Haverhals, P. Hesketh, A. C. Hillier, J. K. Hite, H. Imahori, M. Inaba, M. Innocenti, M. Itagaki, C. Johnson, H. Katayama, S. H. Kilgore, D. J. Kim, J. Koehne, R. Kostecki, G. Krumdick, P. J. Kulesza, J. Leddy, J. J. Lee, O. Leonte, Y. C. Lu, B. L. Lucht, R. P. Lynch, M. Manivannan, R. A. Mantz, P. Marcus, V. Maurice, M. Mauter, J. Mauzeroll, H. N. McMurray, Y. S. Meng, E. L. Miller, I. Milosev, S. D. Minteer, S. Mitra, S. Mukerjee, R. Mukundan, J. Muldoon, L. Nagahara, S. R. Narayan, P. M. Natishan, M. Navaei, J. D. Nicholas, J. Noel, S. S. Nonnenmann, C. O'Dwyer, M. E. Orazem, Y. Oren, J. G. Park, P. Pharkya, P. N. Pintauro, S. Pylypenko, K. Rajeshwar, R. P. Ramasamy, C. Rhodes, D. P. Riemer, D. Roeper, M. Rohwerder, L. Romankiw, S. V. Rotkin, J. L. M. Rupp, M. J. Sailor, D. T. Schwartz, P. K. Sekhar, N. Sharma, A. Simonian, D. K. Smith, K. C. Smith, L. Soleymani, G. R. Stafford, J. A. Staser, V. Subramanian, V. R. Subramanian, K. B. Sundaram, A. H. Suroviec, K. Suto, M. Tao, T. Tatsuma, P. C. Trulove, P. Vanysek, N. Vasiljevic, J. T. Vaughey, S. Virtanen, H. Wang, W. Wang, J. F. Whitacre, G. Williams, M. Winter, D. L. Wood, G. Wu, N. Wu, J. Xiao, Y. Xing, H. Xu, J. J. Yang, G. Zangari
Publisher	Electrochemical Society Inc.
Pages	1441-1446
Number of pages	6
Edition	10
ISBN (Electronic)	9781607688273
ISBN (Print)	9781623324797
DOIs	https://doi.org/10.1149/08010.1441ecst
Publication status	Published - 2017
Event	232nd ECS Meeting - National Harbor, United States Duration: 2017 Oct 1 → 2017 Oct 5

Publication series

Name	ECS Transactions
Number	10
Volume	80
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Other

Other	232nd ECS Meeting
Country/Territory	United States
City	National Harbor
Period	17/10/1 → 17/10/5

ASJC Scopus subject areas

Engineering(all)

Access to Document

10.1149/08010.1441ecst

Cite this

Akash, Y. V., Mimura, M., Kunimoto, M., Fukunaka, Y., & Homma, T. (2017). Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production. In A. P. Abbott, R. Alkire, P. Allongue, T. J. Anderson, P. N. Bartlett, M. Bayachou, S. Bhansali, N. Birbilis, A. B. Bocarsly, C. Bock, O. V. Boltalina, S. Brankovic, R. Buchheit, D. A. Buttry, S. Calabrese Barton, M. T. Carter, V. Chaitanya, G. T. Cheek, Z. Chen, D. Chidambaram, B. A. Chin, J. W. Choi, D. Chu, D. E. Cliffel, H. Deligianni, V. Di Noto, N. Dimitrov, M. Doeff, E. A. Douglas, T. Druffel, K. Edstrom, J. M. Fenton, J. Fergus, J. Fransaer, Y. Fukunaka, D. Guyomard, H. Hamada, L. M. Haverhals, P. Hesketh, A. C. Hillier, J. K. Hite, H. Imahori, M. Inaba, M. Innocenti, M. Itagaki, C. Johnson, H. Katayama, S. H. Kilgore, D. J. Kim, J. Koehne, R. Kostecki, G. Krumdick, P. J. Kulesza, J. Leddy, J. J. Lee, O. Leonte, Y. C. Lu, B. L. Lucht, R. P. Lynch, M. Manivannan, R. A. Mantz, P. Marcus, V. Maurice, M. Mauter, J. Mauzeroll, H. N. McMurray, Y. S. Meng, E. L. Miller, I. Milosev, S. D. Minteer, S. Mitra, S. Mukerjee, R. Mukundan, J. Muldoon, L. Nagahara, S. R. Narayan, P. M. Natishan, M. Navaei, J. D. Nicholas, J. Noel, S. S. Nonnenmann, C. O'Dwyer, M. E. Orazem, Y. Oren, J. G. Park, P. Pharkya, P. N. Pintauro, S. Pylypenko, K. Rajeshwar, R. P. Ramasamy, C. Rhodes, D. P. Riemer, D. Roeper, M. Rohwerder, L. Romankiw, S. V. Rotkin, J. L. M. Rupp, M. J. Sailor, D. T. Schwartz, P. K. Sekhar, N. Sharma, A. Simonian, D. K. Smith, K. C. Smith, L. Soleymani, G. R. Stafford, J. A. Staser, V. Subramanian, V. R. Subramanian, K. B. Sundaram, A. H. Suroviec, K. Suto, M. Tao, T. Tatsuma, P. C. Trulove, P. Vanysek, N. Vasiljevic, J. T. Vaughey, S. Virtanen, H. Wang, W. Wang, J. F. Whitacre, G. Williams, M. Winter, D. L. Wood, G. Wu, N. Wu, J. Xiao, Y. Xing, H. Xu, J. J. Yang, ... G. Zangari (Eds.), ECS Transactions (10 ed., pp. 1441-1446). (ECS Transactions; Vol. 80, No. 10). Electrochemical Society Inc.. https://doi.org/10.1149/08010.1441ecst

Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production. / Akash, Yelchur Venkata; Mimura, Masaki; Kunimoto, Masahiro et al.

ECS Transactions. ed. / A. P. Abbott; R. Alkire; P. Allongue; T. J. Anderson; P. N. Bartlett; M. Bayachou; S. Bhansali; N. Birbilis; A. B. Bocarsly; C. Bock; O. V. Boltalina; S. Brankovic; R. Buchheit; D. A. Buttry; S. Calabrese Barton; M. T. Carter; V. Chaitanya; G. T. Cheek; Z. Chen; D. Chidambaram; B. A. Chin; J. W. Choi; D. Chu; D. E. Cliffel; H. Deligianni; V. Di Noto; N. Dimitrov; M. Doeff; E. A. Douglas; T. Druffel; K. Edstrom; J. M. Fenton; J. Fergus; J. Fransaer; Y. Fukunaka; D. Guyomard; H. Hamada; L. M. Haverhals; P. Hesketh; A. C. Hillier; J. K. Hite; H. Imahori; M. Inaba; M. Innocenti; M. Itagaki; C. Johnson; H. Katayama; S. H. Kilgore; D. J. Kim; J. Koehne; R. Kostecki; G. Krumdick; P. J. Kulesza; J. Leddy; J. J. Lee; O. Leonte; Y. C. Lu; B. L. Lucht; R. P. Lynch; M. Manivannan; R. A. Mantz; P. Marcus; V. Maurice; M. Mauter; J. Mauzeroll; H. N. McMurray; Y. S. Meng; E. L. Miller; I. Milosev; S. D. Minteer; S. Mitra; S. Mukerjee; R. Mukundan; J. Muldoon; L. Nagahara; S. R. Narayan; P. M. Natishan; M. Navaei; J. D. Nicholas; J. Noel; S. S. Nonnenmann; C. O'Dwyer; M. E. Orazem; Y. Oren; J. G. Park; P. Pharkya; P. N. Pintauro; S. Pylypenko; K. Rajeshwar; R. P. Ramasamy; C. Rhodes; D. P. Riemer; D. Roeper; M. Rohwerder; L. Romankiw; S. V. Rotkin; J. L. M. Rupp; M. J. Sailor; D. T. Schwartz; P. K. Sekhar; N. Sharma; A. Simonian; D. K. Smith; K. C. Smith; L. Soleymani; G. R. Stafford; J. A. Staser; V. Subramanian; V. R. Subramanian; K. B. Sundaram; A. H. Suroviec; K. Suto; M. Tao; T. Tatsuma; P. C. Trulove; P. Vanysek; N. Vasiljevic; J. T. Vaughey; S. Virtanen; H. Wang; W. Wang; J. F. Whitacre; G. Williams; M. Winter; D. L. Wood; G. Wu; N. Wu; J. Xiao; Y. Xing; H. Xu; J. J. Yang; G. Zangari. 10. ed. Electrochemical Society Inc., 2017. p. 1441-1446 (ECS Transactions; Vol. 80, No. 10).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Akash, YV, Mimura, M, Kunimoto, M, Fukunaka, Y & Homma, T 2017, Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production. in AP Abbott, R Alkire, P Allongue, TJ Anderson, PN Bartlett, M Bayachou, S Bhansali, N Birbilis, AB Bocarsly, C Bock, OV Boltalina, S Brankovic, R Buchheit, DA Buttry, S Calabrese Barton, MT Carter, V Chaitanya, GT Cheek, Z Chen, D Chidambaram, BA Chin, JW Choi, D Chu, DE Cliffel, H Deligianni, V Di Noto, N Dimitrov, M Doeff, EA Douglas, T Druffel, K Edstrom, JM Fenton, J Fergus, J Fransaer, Y Fukunaka, D Guyomard, H Hamada, LM Haverhals, P Hesketh, AC Hillier, JK Hite, H Imahori, M Inaba, M Innocenti, M Itagaki, C Johnson, H Katayama, SH Kilgore, DJ Kim, J Koehne, R Kostecki, G Krumdick, PJ Kulesza, J Leddy, JJ Lee, O Leonte, YC Lu, BL Lucht, RP Lynch, M Manivannan, RA Mantz, P Marcus, V Maurice, M Mauter, J Mauzeroll, HN McMurray, YS Meng, EL Miller, I Milosev, SD Minteer, S Mitra, S Mukerjee, R Mukundan, J Muldoon, L Nagahara, SR Narayan, PM Natishan, M Navaei, JD Nicholas, J Noel, SS Nonnenmann, C O'Dwyer, ME Orazem, Y Oren, JG Park, P Pharkya, PN Pintauro, S Pylypenko, K Rajeshwar, RP Ramasamy, C Rhodes, DP Riemer, D Roeper, M Rohwerder, L Romankiw, SV Rotkin, JLM Rupp, MJ Sailor, DT Schwartz, PK Sekhar, N Sharma, A Simonian, DK Smith, KC Smith, L Soleymani, GR Stafford, JA Staser, V Subramanian, VR Subramanian, KB Sundaram, AH Suroviec, K Suto, M Tao, T Tatsuma, PC Trulove, P Vanysek, N Vasiljevic, JT Vaughey, S Virtanen, H Wang, W Wang, JF Whitacre, G Williams, M Winter, DL Wood, G Wu, N Wu, J Xiao, Y Xing, H Xu, JJ Yang & G Zangari (eds), ECS Transactions. 10 edn, ECS Transactions, no. 10, vol. 80, Electrochemical Society Inc., pp. 1441-1446, 232nd ECS Meeting, National Harbor, United States, 17/10/1. https://doi.org/10.1149/08010.1441ecst

Akash YV, Mimura M, Kunimoto M, Fukunaka Y, Homma T. Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production. In Abbott AP, Alkire R, Allongue P, Anderson TJ, Bartlett PN, Bayachou M, Bhansali S, Birbilis N, Bocarsly AB, Bock C, Boltalina OV, Brankovic S, Buchheit R, Buttry DA, Calabrese Barton S, Carter MT, Chaitanya V, Cheek GT, Chen Z, Chidambaram D, Chin BA, Choi JW, Chu D, Cliffel DE, Deligianni H, Di Noto V, Dimitrov N, Doeff M, Douglas EA, Druffel T, Edstrom K, Fenton JM, Fergus J, Fransaer J, Fukunaka Y, Guyomard D, Hamada H, Haverhals LM, Hesketh P, Hillier AC, Hite JK, Imahori H, Inaba M, Innocenti M, Itagaki M, Johnson C, Katayama H, Kilgore SH, Kim DJ, Koehne J, Kostecki R, Krumdick G, Kulesza PJ, Leddy J, Lee JJ, Leonte O, Lu YC, Lucht BL, Lynch RP, Manivannan M, Mantz RA, Marcus P, Maurice V, Mauter M, Mauzeroll J, McMurray HN, Meng YS, Miller EL, Milosev I, Minteer SD, Mitra S, Mukerjee S, Mukundan R, Muldoon J, Nagahara L, Narayan SR, Natishan PM, Navaei M, Nicholas JD, Noel J, Nonnenmann SS, O'Dwyer C, Orazem ME, Oren Y, Park JG, Pharkya P, Pintauro PN, Pylypenko S, Rajeshwar K, Ramasamy RP, Rhodes C, Riemer DP, Roeper D, Rohwerder M, Romankiw L, Rotkin SV, Rupp JLM, Sailor MJ, Schwartz DT, Sekhar PK, Sharma N, Simonian A, Smith DK, Smith KC, Soleymani L, Stafford GR, Staser JA, Subramanian V, Subramanian VR, Sundaram KB, Suroviec AH, Suto K, Tao M, Tatsuma T, Trulove PC, Vanysek P, Vasiljevic N, Vaughey JT, Virtanen S, Wang H, Wang W, Whitacre JF, Williams G, Winter M, Wood DL, Wu G, Wu N, Xiao J, Xing Y, Xu H, Yang JJ, Zangari G, editors, ECS Transactions. 10 ed. Electrochemical Society Inc. 2017. p. 1441-1446. (ECS Transactions; 10). doi: 10.1149/08010.1441ecst

Akash, Yelchur Venkata ; Mimura, Masaki ; Kunimoto, Masahiro et al. / Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production. ECS Transactions. editor / A. P. Abbott ; R. Alkire ; P. Allongue ; T. J. Anderson ; P. N. Bartlett ; M. Bayachou ; S. Bhansali ; N. Birbilis ; A. B. Bocarsly ; C. Bock ; O. V. Boltalina ; S. Brankovic ; R. Buchheit ; D. A. Buttry ; S. Calabrese Barton ; M. T. Carter ; V. Chaitanya ; G. T. Cheek ; Z. Chen ; D. Chidambaram ; B. A. Chin ; J. W. Choi ; D. Chu ; D. E. Cliffel ; H. Deligianni ; V. Di Noto ; N. Dimitrov ; M. Doeff ; E. A. Douglas ; T. Druffel ; K. Edstrom ; J. M. Fenton ; J. Fergus ; J. Fransaer ; Y. Fukunaka ; D. Guyomard ; H. Hamada ; L. M. Haverhals ; P. Hesketh ; A. C. Hillier ; J. K. Hite ; H. Imahori ; M. Inaba ; M. Innocenti ; M. Itagaki ; C. Johnson ; H. Katayama ; S. H. Kilgore ; D. J. Kim ; J. Koehne ; R. Kostecki ; G. Krumdick ; P. J. Kulesza ; J. Leddy ; J. J. Lee ; O. Leonte ; Y. C. Lu ; B. L. Lucht ; R. P. Lynch ; M. Manivannan ; R. A. Mantz ; P. Marcus ; V. Maurice ; M. Mauter ; J. Mauzeroll ; H. N. McMurray ; Y. S. Meng ; E. L. Miller ; I. Milosev ; S. D. Minteer ; S. Mitra ; S. Mukerjee ; R. Mukundan ; J. Muldoon ; L. Nagahara ; S. R. Narayan ; P. M. Natishan ; M. Navaei ; J. D. Nicholas ; J. Noel ; S. S. Nonnenmann ; C. O'Dwyer ; M. E. Orazem ; Y. Oren ; J. G. Park ; P. Pharkya ; P. N. Pintauro ; S. Pylypenko ; K. Rajeshwar ; R. P. Ramasamy ; C. Rhodes ; D. P. Riemer ; D. Roeper ; M. Rohwerder ; L. Romankiw ; S. V. Rotkin ; J. L. M. Rupp ; M. J. Sailor ; D. T. Schwartz ; P. K. Sekhar ; N. Sharma ; A. Simonian ; D. K. Smith ; K. C. Smith ; L. Soleymani ; G. R. Stafford ; J. A. Staser ; V. Subramanian ; V. R. Subramanian ; K. B. Sundaram ; A. H. Suroviec ; K. Suto ; M. Tao ; T. Tatsuma ; P. C. Trulove ; P. Vanysek ; N. Vasiljevic ; J. T. Vaughey ; S. Virtanen ; H. Wang ; W. Wang ; J. F. Whitacre ; G. Williams ; M. Winter ; D. L. Wood ; G. Wu ; N. Wu ; J. Xiao ; Y. Xing ; H. Xu ; J. J. Yang ; G. Zangari. 10. ed. Electrochemical Society Inc., 2017. pp. 1441-1446 (ECS Transactions; 10).

@inproceedings{b74686f25b2441e9a67dca13e6378a53,

title = "Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production",

abstract = "As one of the most cost-effective methods to produce solar-grade silicon (SOG-Si), purification of silica solution by extracting its impurities through wet chemical processes has been proposed. This paper reports on the design of channel type reactor for liquid-liquid extraction to purify silica solution, focusing particularly on the extraction of B (boric acid) in aqueous phase with 2,2,4-trimethyl-1,3-pentanediol (TMPD) in organic phase. The reactor fabricated by 3D printing technology was designed to have two characteristic structures: (i) a throat structure that shows gradually diverging part after converging near Y shaped inlets and (ii) obstacles structure on downstream. Two solutions were made to contact with each other by turbulent mixing around the throat structure, causing small droplets formation that was dispersed and retained efficiently even on downstream by obstacles structure. This droplet dispersion shortens diffusion distance of boric acid to meet TMPD at the liquid-liquid interface, providing efficient mass transfer. At higher flow rate i.e., 380 ml/min, the extraction efficiency was 97.43% after the multi stage process. The results suggest that the channel type reactor designed here is profitable for elimination of impurities, such as B or P, in silica solution to produce SOG-Si.",

author = "Akash, {Yelchur Venkata} and Masaki Mimura and Masahiro Kunimoto and Yasuhiro Fukunaka and Takayuki Homma",

note = "Funding Information: This work was financially supported in part by the Japan Science and Technology Agency (JST) CREST program. Publisher Copyright: {\textcopyright} The Electrochemical Society.; 232nd ECS Meeting ; Conference date: 01-10-2017 Through 05-10-2017",

year = "2017",

doi = "10.1149/08010.1441ecst",

language = "English",

isbn = "9781623324797",

series = "ECS Transactions",

publisher = "Electrochemical Society Inc.",

number = "10",

pages = "1441--1446",

editor = "Abbott, {A. P.} and R. Alkire and P. Allongue and Anderson, {T. J.} and Bartlett, {P. N.} and M. Bayachou and S. Bhansali and N. Birbilis and Bocarsly, {A. B.} and C. Bock and Boltalina, {O. V.} and S. Brankovic and R. Buchheit and Buttry, {D. A.} and {Calabrese Barton}, S. and Carter, {M. T.} and V. Chaitanya and Cheek, {G. T.} and Z. Chen and D. Chidambaram and Chin, {B. A.} and Choi, {J. W.} and D. Chu and Cliffel, {D. E.} and H. Deligianni and {Di Noto}, V. and N. Dimitrov and M. Doeff and Douglas, {E. A.} and T. Druffel and K. Edstrom and Fenton, {J. M.} and J. Fergus and J. Fransaer and Y. Fukunaka and D. Guyomard and H. Hamada and Haverhals, {L. M.} and P. Hesketh and Hillier, {A. C.} and Hite, {J. K.} and H. Imahori and M. Inaba and M. Innocenti and M. Itagaki and C. Johnson and H. Katayama and Kilgore, {S. H.} and Kim, {D. J.} and J. Koehne and R. Kostecki and G. Krumdick and Kulesza, {P. J.} and J. Leddy and Lee, {J. J.} and O. Leonte and Lu, {Y. C.} and Lucht, {B. L.} and Lynch, {R. P.} and M. Manivannan and Mantz, {R. A.} and P. Marcus and V. Maurice and M. Mauter and J. Mauzeroll and McMurray, {H. N.} and Meng, {Y. S.} and Miller, {E. L.} and I. Milosev and Minteer, {S. D.} and S. Mitra and S. Mukerjee and R. Mukundan and J. Muldoon and L. Nagahara and Narayan, {S. R.} and Natishan, {P. M.} and M. Navaei and Nicholas, {J. D.} and J. Noel and Nonnenmann, {S. S.} and C. O'Dwyer and Orazem, {M. E.} and Y. Oren and Park, {J. G.} and P. Pharkya and Pintauro, {P. N.} and S. Pylypenko and K. Rajeshwar and Ramasamy, {R. P.} and C. Rhodes and Riemer, {D. P.} and D. Roeper and M. Rohwerder and L. Romankiw and Rotkin, {S. V.} and Rupp, {J. L. M.} and Sailor, {M. J.} and Schwartz, {D. T.} and Sekhar, {P. K.} and N. Sharma and A. Simonian and Smith, {D. K.} and Smith, {K. C.} and L. Soleymani and Stafford, {G. R.} and Staser, {J. A.} and V. Subramanian and Subramanian, {V. R.} and Sundaram, {K. B.} and Suroviec, {A. H.} and K. Suto and M. Tao and T. Tatsuma and Trulove, {P. C.} and P. Vanysek and N. Vasiljevic and Vaughey, {J. T.} and S. Virtanen and H. Wang and W. Wang and Whitacre, {J. F.} and G. Williams and M. Winter and Wood, {D. L.} and G. Wu and N. Wu and J. Xiao and Y. Xing and H. Xu and Yang, {J. J.} and G. Zangari",

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T1 - Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production

AU - Akash, Yelchur Venkata

AU - Mimura, Masaki

AU - Kunimoto, Masahiro

AU - Fukunaka, Yasuhiro

AU - Homma, Takayuki

N1 - Funding Information: This work was financially supported in part by the Japan Science and Technology Agency (JST) CREST program. Publisher Copyright: © The Electrochemical Society.

PY - 2017

Y1 - 2017

N2 - As one of the most cost-effective methods to produce solar-grade silicon (SOG-Si), purification of silica solution by extracting its impurities through wet chemical processes has been proposed. This paper reports on the design of channel type reactor for liquid-liquid extraction to purify silica solution, focusing particularly on the extraction of B (boric acid) in aqueous phase with 2,2,4-trimethyl-1,3-pentanediol (TMPD) in organic phase. The reactor fabricated by 3D printing technology was designed to have two characteristic structures: (i) a throat structure that shows gradually diverging part after converging near Y shaped inlets and (ii) obstacles structure on downstream. Two solutions were made to contact with each other by turbulent mixing around the throat structure, causing small droplets formation that was dispersed and retained efficiently even on downstream by obstacles structure. This droplet dispersion shortens diffusion distance of boric acid to meet TMPD at the liquid-liquid interface, providing efficient mass transfer. At higher flow rate i.e., 380 ml/min, the extraction efficiency was 97.43% after the multi stage process. The results suggest that the channel type reactor designed here is profitable for elimination of impurities, such as B or P, in silica solution to produce SOG-Si.

AB - As one of the most cost-effective methods to produce solar-grade silicon (SOG-Si), purification of silica solution by extracting its impurities through wet chemical processes has been proposed. This paper reports on the design of channel type reactor for liquid-liquid extraction to purify silica solution, focusing particularly on the extraction of B (boric acid) in aqueous phase with 2,2,4-trimethyl-1,3-pentanediol (TMPD) in organic phase. The reactor fabricated by 3D printing technology was designed to have two characteristic structures: (i) a throat structure that shows gradually diverging part after converging near Y shaped inlets and (ii) obstacles structure on downstream. Two solutions were made to contact with each other by turbulent mixing around the throat structure, causing small droplets formation that was dispersed and retained efficiently even on downstream by obstacles structure. This droplet dispersion shortens diffusion distance of boric acid to meet TMPD at the liquid-liquid interface, providing efficient mass transfer. At higher flow rate i.e., 380 ml/min, the extraction efficiency was 97.43% after the multi stage process. The results suggest that the channel type reactor designed here is profitable for elimination of impurities, such as B or P, in silica solution to produce SOG-Si.

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A2 - Abbott, A. P.

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A2 - Calabrese Barton, S.

A2 - Carter, M. T.

A2 - Chaitanya, V.

A2 - Cheek, G. T.

A2 - Chen, Z.

A2 - Chidambaram, D.

A2 - Chin, B. A.

A2 - Choi, J. W.

A2 - Chu, D.

A2 - Cliffel, D. E.

A2 - Deligianni, H.

A2 - Di Noto, V.

A2 - Dimitrov, N.

A2 - Doeff, M.

A2 - Douglas, E. A.

A2 - Druffel, T.

A2 - Edstrom, K.

A2 - Fenton, J. M.

A2 - Fergus, J.

A2 - Fransaer, J.

A2 - Fukunaka, Y.

A2 - Guyomard, D.

A2 - Hamada, H.

A2 - Haverhals, L. M.

A2 - Hesketh, P.

A2 - Hillier, A. C.

A2 - Hite, J. K.

A2 - Imahori, H.

A2 - Inaba, M.

A2 - Innocenti, M.

A2 - Itagaki, M.

A2 - Johnson, C.

A2 - Katayama, H.

A2 - Kilgore, S. H.

A2 - Kim, D. J.

A2 - Koehne, J.

A2 - Kostecki, R.

A2 - Krumdick, G.

A2 - Kulesza, P. J.

A2 - Leddy, J.

A2 - Lee, J. J.

A2 - Leonte, O.

A2 - Lu, Y. C.

A2 - Lucht, B. L.

A2 - Lynch, R. P.

A2 - Manivannan, M.

A2 - Mantz, R. A.

A2 - Marcus, P.

A2 - Maurice, V.

A2 - Mauter, M.

A2 - Mauzeroll, J.

A2 - McMurray, H. N.

A2 - Meng, Y. S.

A2 - Miller, E. L.

A2 - Milosev, I.

A2 - Minteer, S. D.

A2 - Mitra, S.

A2 - Mukerjee, S.

A2 - Mukundan, R.

A2 - Muldoon, J.

A2 - Nagahara, L.

A2 - Narayan, S. R.

A2 - Natishan, P. M.

A2 - Navaei, M.

A2 - Nicholas, J. D.

A2 - Noel, J.

A2 - Nonnenmann, S. S.

A2 - O'Dwyer, C.

A2 - Orazem, M. E.

A2 - Oren, Y.

A2 - Park, J. G.

A2 - Pharkya, P.

A2 - Pintauro, P. N.

A2 - Pylypenko, S.

A2 - Rajeshwar, K.

A2 - Ramasamy, R. P.

A2 - Rhodes, C.

A2 - Riemer, D. P.

A2 - Roeper, D.

A2 - Rohwerder, M.

A2 - Romankiw, L.

A2 - Rotkin, S. V.

A2 - Rupp, J. L. M.

A2 - Sailor, M. J.

A2 - Schwartz, D. T.

A2 - Sekhar, P. K.

A2 - Sharma, N.

A2 - Simonian, A.

A2 - Smith, D. K.

A2 - Smith, K. C.

A2 - Soleymani, L.

A2 - Stafford, G. R.

A2 - Staser, J. A.

A2 - Subramanian, V.

A2 - Subramanian, V. R.

A2 - Sundaram, K. B.

A2 - Suroviec, A. H.

A2 - Suto, K.

A2 - Tao, M.

A2 - Tatsuma, T.

A2 - Trulove, P. C.

A2 - Vanysek, P.

A2 - Vasiljevic, N.

A2 - Vaughey, J. T.

A2 - Virtanen, S.

A2 - Wang, H.

A2 - Wang, W.

A2 - Whitacre, J. F.

A2 - Williams, G.

A2 - Winter, M.

A2 - Wood, D. L.

A2 - Wu, G.

A2 - Wu, N.

A2 - Xiao, J.

A2 - Xing, Y.

A2 - Xu, H.

A2 - Yang, J. J.

A2 - Zangari, G.

PB - Electrochemical Society Inc.

T2 - 232nd ECS Meeting

Y2 - 1 October 2017 through 5 October 2017

ER -

Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production

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