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https://ir.cnu.edu.tw/handle/310902800/32150
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| Title: | Groundwater treatment by electrodialysis: gearing up toward green technology |
| Authors: | Mendoza, Rose Marie O.
Dalida, Maria Lourdes P.
Kan, Chi-Chuan
Wan, Meng-Wei |
| Contributors: | Far Eastern Univ, Nicanor Reyes Med Fdn, Gen Educ Dept
Univ Philippines, Dept Chem Engn, Natl Grad Sch Engn
Chia Nan Univ Pharm & Sci, Inst Hot Spring Ind
Chia Nan Univ Pharm & Sci, Dept Environm Resources Management |
| Keywords: | Electrodialysis
Groundwater treatment
Removal efficiency
Green technology
Sustainable environment |
| Date: | 2018-09 |
| Issue Date: | 2019-11-15 15:42:50 (UTC+8) |
| Publisher: | DESALINATION PUBL |
| Abstract: | The performance of a tailor-made electrodialysis stack to treat groundwater was conducted and evaluated. The stack was operated at optimum experimental conditions at applied voltage of 17 V, feed flow velocity of 0.033 L/s, and desalination time of 92 min. Major cation contents of the groundwater were Na, K, Ca, Mg, and As, and anions identified were Cl, NO3, SO4, HCO3, and PO4. The average cation and anion removal efficiency were 99.15% and 100%, respectively. The oxidation-reduction potential was also recorded to increase from -162.2 to 908 mV, indicating a shift from a highly reducing to a highly oxidizing reaction. Solution pH was also noted to drop from 7.62 to 5.80 with corresponding decrease in the conductivity of 1,388-36 mu S/cm. The product water can be classified as that of purified water and suitable for drinking and analytical purposes. Arsenic desalination kinetics was found to increase overtime at constant applied voltage and feed flow rate. Lower As feed concentration samples tend to achieve product water concentrations with maximum contaminant level lower than 10 ppb earlier than high feed concentration samples. |
| ???metadata.dc.relation.uri???: | http://dx.doi.org/10.5004/dwt.2018.22929 |
| Relation: | Journal of Oleo Science, v.127, pp.178-183 |
| Appears in Collections: | [Dept. of Tourism Management] Periodical Articles
[Dept. of Environmental Resources Management] Periodical Articles
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| 10.5004-dwt.2018.22929.pdf | | 128Kb | Adobe PDF | 355 | View/Open | | index.html | | 0Kb | HTML | 1343 | View/Open |
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