Abstract
As a promising industrial application of forward osmosis (FO), an FO-based concentration system for precious metal recovery from printed circuit board (PCB) wastewater has been newly suggested. This novel FO concentration process utilizes a dilution-needed waste solution possessing high conductivity as a draw solution, and thus an external supply of draw solution as well as a re-concentration process for the diluted draw solution are not required. An electroless (E'less) nickel (Ni) plating solution was evaluated as dilution-needed waste stream-based draw solution, and the test results confirmed that the selected Ni solution could produce an acceptable FO performance, i.e., water flux of 39.4 LMH (active layer facing draw solution (AL-DS) mode with deionized feed solution). From a series of FO experiments conducted with a palladium (Pd) catalyst as a concentration-needed feed solution, the Pd solution was effectively concentrated under an active layer facing feed solution (AL-FS) mode with a slight impact from Pd scaling. The modeling prediction based on our experimental results showed that theoretically Pd can be concentrated 17.2-times-high. The overall performance of our Pd concentration tests indicated that the FO process is promising for concentrating Pd, thereby improving the efficiency of its recycling. The newly proposed system, a recovery-free FO driven by a waste stream, offers attractive economic advantages including (1) zero cost for the supply and re-concentration of the draw solution and (2) enhanced energy efficiency in the precious metal recycling process.
| Original language | English |
|---|---|
| Pages (from-to) | 234-242 |
| Number of pages | 9 |
| Journal | Journal of Membrane Science |
| Volume | 552 |
| DOIs | |
| Publication status | Published - 2018 Apr 15 |
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Keywords
- Draw solution
- Forward osmosis (FO)
- Industrial application
- Printed circuit board (PCB) wastewater treatment
- Resource recovery
ASJC Scopus subject areas
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
New industrial application of forward osmosis (FO) : Precious metal recovery from printed circuit board (PCB) plant wastewater. / Gwak, Gimun; Kim, David Inhyuk; Hong, Seungkwan.
In: Journal of Membrane Science, Vol. 552, 15.04.2018, p. 234-242.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - New industrial application of forward osmosis (FO)
T2 - Precious metal recovery from printed circuit board (PCB) plant wastewater
AU - Gwak, Gimun
AU - Kim, David Inhyuk
AU - Hong, Seungkwan
PY - 2018/4/15
Y1 - 2018/4/15
N2 - As a promising industrial application of forward osmosis (FO), an FO-based concentration system for precious metal recovery from printed circuit board (PCB) wastewater has been newly suggested. This novel FO concentration process utilizes a dilution-needed waste solution possessing high conductivity as a draw solution, and thus an external supply of draw solution as well as a re-concentration process for the diluted draw solution are not required. An electroless (E'less) nickel (Ni) plating solution was evaluated as dilution-needed waste stream-based draw solution, and the test results confirmed that the selected Ni solution could produce an acceptable FO performance, i.e., water flux of 39.4 LMH (active layer facing draw solution (AL-DS) mode with deionized feed solution). From a series of FO experiments conducted with a palladium (Pd) catalyst as a concentration-needed feed solution, the Pd solution was effectively concentrated under an active layer facing feed solution (AL-FS) mode with a slight impact from Pd scaling. The modeling prediction based on our experimental results showed that theoretically Pd can be concentrated 17.2-times-high. The overall performance of our Pd concentration tests indicated that the FO process is promising for concentrating Pd, thereby improving the efficiency of its recycling. The newly proposed system, a recovery-free FO driven by a waste stream, offers attractive economic advantages including (1) zero cost for the supply and re-concentration of the draw solution and (2) enhanced energy efficiency in the precious metal recycling process.
AB - As a promising industrial application of forward osmosis (FO), an FO-based concentration system for precious metal recovery from printed circuit board (PCB) wastewater has been newly suggested. This novel FO concentration process utilizes a dilution-needed waste solution possessing high conductivity as a draw solution, and thus an external supply of draw solution as well as a re-concentration process for the diluted draw solution are not required. An electroless (E'less) nickel (Ni) plating solution was evaluated as dilution-needed waste stream-based draw solution, and the test results confirmed that the selected Ni solution could produce an acceptable FO performance, i.e., water flux of 39.4 LMH (active layer facing draw solution (AL-DS) mode with deionized feed solution). From a series of FO experiments conducted with a palladium (Pd) catalyst as a concentration-needed feed solution, the Pd solution was effectively concentrated under an active layer facing feed solution (AL-FS) mode with a slight impact from Pd scaling. The modeling prediction based on our experimental results showed that theoretically Pd can be concentrated 17.2-times-high. The overall performance of our Pd concentration tests indicated that the FO process is promising for concentrating Pd, thereby improving the efficiency of its recycling. The newly proposed system, a recovery-free FO driven by a waste stream, offers attractive economic advantages including (1) zero cost for the supply and re-concentration of the draw solution and (2) enhanced energy efficiency in the precious metal recycling process.
KW - Draw solution
KW - Forward osmosis (FO)
KW - Industrial application
KW - Printed circuit board (PCB) wastewater treatment
KW - Resource recovery
UR - http://www.scopus.com/inward/record.url?scp=85041908416&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041908416&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2018.02.022
DO - 10.1016/j.memsci.2018.02.022
M3 - Article
AN - SCOPUS:85041908416
VL - 552
SP - 234
EP - 242
JO - Jornal of Membrane Science
JF - Jornal of Membrane Science
SN - 0376-7388
ER -