Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis (2023)

Chang, H. M., Chen, S. S., Chen, Y. T., Chang, W. S., Li, C. W., Nguyen, N. C., Ray, S. S., & Cao, D. T. N. (2021). Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis. Journal of Hazardous Materials, 403, [123637]. https://doi.org/10.1016/j.jhazmat.2020.123637

Chang, Hau Ming ; Chen, Shiao Shing ; Chen, Yu Ting et al. / Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis. In: Journal of Hazardous Materials. 2021 ; Vol. 403.

@article{11c80085cdb3407091655c9b90e38e84,

title = "Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis",

abstract = "Triiodide, a larger charged molecule compared to iodide, is thermodynamically favored with the presence of both iodide and iodine, and is easier to be retained by membrane processes. For the first time, iodide was recovered in the form of triiodide by forward osmosis (FO) for thin-film transistor liquid crystal display industries by preoxidation of iodide to triiodide. Partial oxidation by NaOCl was used to convert the iodide to iodine and then to form triiodide. Ethylenediaminetetraacetic acid disodium salt (EDTA-2Na), a commonly used chelating agent in the industry, was used as the draw solute because of its low reverse salt flux. The results revealed that the ideal efficiency of iodide recovery was at pH 3 with a preoxidation (adding 0.0150 M NaClO) for the 0.048 M iodide wastewater with a recovery of 98.5%. Additionally, the Pourbaix diagram and starch indicator were used to verify the formation of triiodide. Membrane distillation was demonstrated to recover the EDTA-2Na draw solute, and more than 99% of recoveries for the draw solutes with initial water flux of 12.0 L/m2 h were achieved, indicating that simultaneous recovery of the EDTA-2Na draw solute and water is feasible.",

keywords = "Draw solution, Forward osmosis, Iodide recovery, Membrane distillation, Triiodide",

author = "Chang, {Hau Ming} and Chen, {Shiao Shing} and Chen, {Yu Ting} and Chang, {Wen Shing} and Li, {Chi Wang} and Nguyen, {Nguyen Cong} and Ray, {Saikat Sinha} and Cao, {Dan Thanh Ngoc}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

month = feb,

day = "5",

doi = "10.1016/j.jhazmat.2020.123637",

language = "???core.languages.en_GB???",

volume = "403",

journal = "Journal of Hazardous Materials",

issn = "0304-3894",

publisher = "Elsevier",

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Chang, HM, Chen, SS, Chen, YT, Chang, WS, Li, CW, Nguyen, NC, Ray, SS & Cao, DTN 2021, 'Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis', Journal of Hazardous Materials, vol. 403, 123637. https://doi.org/10.1016/j.jhazmat.2020.123637

Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis. / Chang, Hau Ming; Chen, Shiao Shing; Chen, Yu Ting et al.

In: Journal of Hazardous Materials, Vol. 403, 123637, 05.02.2021.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis

AU - Chang, Hau Ming

AU - Chen, Shiao Shing

AU - Chen, Yu Ting

AU - Chang, Wen Shing

AU - Li, Chi Wang

AU - Nguyen, Nguyen Cong

AU - Ray, Saikat Sinha

AU - Cao, Dan Thanh Ngoc

N1 - Publisher Copyright:© 2020 Elsevier B.V.

PY - 2021/2/5

Y1 - 2021/2/5

N2 - Triiodide, a larger charged molecule compared to iodide, is thermodynamically favored with the presence of both iodide and iodine, and is easier to be retained by membrane processes. For the first time, iodide was recovered in the form of triiodide by forward osmosis (FO) for thin-film transistor liquid crystal display industries by preoxidation of iodide to triiodide. Partial oxidation by NaOCl was used to convert the iodide to iodine and then to form triiodide. Ethylenediaminetetraacetic acid disodium salt (EDTA-2Na), a commonly used chelating agent in the industry, was used as the draw solute because of its low reverse salt flux. The results revealed that the ideal efficiency of iodide recovery was at pH 3 with a preoxidation (adding 0.0150 M NaClO) for the 0.048 M iodide wastewater with a recovery of 98.5%. Additionally, the Pourbaix diagram and starch indicator were used to verify the formation of triiodide. Membrane distillation was demonstrated to recover the EDTA-2Na draw solute, and more than 99% of recoveries for the draw solutes with initial water flux of 12.0 L/m2 h were achieved, indicating that simultaneous recovery of the EDTA-2Na draw solute and water is feasible.

AB - Triiodide, a larger charged molecule compared to iodide, is thermodynamically favored with the presence of both iodide and iodine, and is easier to be retained by membrane processes. For the first time, iodide was recovered in the form of triiodide by forward osmosis (FO) for thin-film transistor liquid crystal display industries by preoxidation of iodide to triiodide. Partial oxidation by NaOCl was used to convert the iodide to iodine and then to form triiodide. Ethylenediaminetetraacetic acid disodium salt (EDTA-2Na), a commonly used chelating agent in the industry, was used as the draw solute because of its low reverse salt flux. The results revealed that the ideal efficiency of iodide recovery was at pH 3 with a preoxidation (adding 0.0150 M NaClO) for the 0.048 M iodide wastewater with a recovery of 98.5%. Additionally, the Pourbaix diagram and starch indicator were used to verify the formation of triiodide. Membrane distillation was demonstrated to recover the EDTA-2Na draw solute, and more than 99% of recoveries for the draw solutes with initial water flux of 12.0 L/m2 h were achieved, indicating that simultaneous recovery of the EDTA-2Na draw solute and water is feasible.

KW - Draw solution

KW - Forward osmosis

KW - Iodide recovery

KW - Membrane distillation

KW - Triiodide

UR - http://www.scopus.com/inward/record.url?scp=85089429180&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2020.123637

DO - 10.1016/j.jhazmat.2020.123637

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C2 - 32818831

AN - SCOPUS:85089429180

SN - 0304-3894

VL - 403

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

M1 - 123637

ER -

Chang HM, Chen SS, Chen YT, Chang WS, Li CW, Nguyen NC et al. Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis. Journal of Hazardous Materials. 2021 Feb 5;403:123637. doi: 10.1016/j.jhazmat.2020.123637