Academic Journal
KOH activation of carbon electrodes for enhanced capacitive dechlorination: Performance and mechanisms.
| Τίτλος: | KOH activation of carbon electrodes for enhanced capacitive dechlorination: Performance and mechanisms. |
|---|---|
| Συγγραφείς: | Jia J; Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin, China., Lu C; School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China., Han J; School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China., Wang W; School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China., Zhang K; Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin, China., Ren Z; School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China. |
| Πηγή: | PloS one [PLoS One] 2026 May 27; Vol. 21 (5), pp. e0347780. Date of Electronic Publication: 2026 May 27 (Print Publication: 2026). |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: San Francisco, CA : Public Library of Science |
| Ιατρικοί όροι (MeSH): | Potassium Compounds*/chemistry , Hydroxides*/chemistry , Carbon*/chemistry , Chlorides*/chemistry , Chlorides*/isolation & purification , Water Purification*/methods, Wastewater/chemistry ; Water Pollutants, Chemical/chemistry ; Water Pollutants, Chemical/isolation & purification ; Electrodes ; Adsorption ; Halogenation |
| Περίληψη: | Coal transportation terminals produce wastewater containing high concentrations of chloride, which can cause corrosion of equipment and be hazardous to the environment. Capacitive deionisation (CDI) has been discussed as an alternative to conventional dechlorination methods, given that it consumes low energy and avoids secondary pollution. This paper involved the development of a KOH-modified activated carbon (KOH-AC) electrode, which must be used to improve the chloride removal performance of CDI. The obtained characterization results showed that, under the activation of KOH, the specific surface area of activated carbon (104.48 m2/g to 1390.88 m2/g) was greatly intensified, the pore structure became more uniform, and plentiful oxygen-containing functional groups were formed, improving electrochemical activity and ion adsorption capacity. In optimal operating conditions (1.2 V, 20 mL/min), the KOH-AC electrode obtained a chloride ion removal efficiency of more than 80% and was extremely stable even after numerous adsorption-desorption cycles. Moreover, the CatBoost exhibited high accuracy in predicting chloride removal efficiency (R2 = 0.9114). The shap analysis revealed that the flow rate and influent NaCl concentration were the most significant factors for dechlorination. This study provides insights for the efficient removal of chlorinated wastewater in coal transportation terminals, while the constructed model offers a reference for precise treatment. (Copyright: © 2026 Jia et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.) |
| Competing Interests: | The authors have declared that no competing interests exist. |
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| Substance Nomenclature: | WZH3C48M4T (potassium hydroxide) 0 (Potassium Compounds) 0 (Hydroxides) 7440-44-0 (Carbon) 0 (Wastewater) 0 (Chlorides) 0 (Water Pollutants, Chemical) |
| Entry Date(s): | Date Created: 20260527 Date Completed: 20260717 Latest Revision: 20260813 |
| Update Code: | 20260813 |
| PubMed Central ID: | PMC13215479 |
| DOI: | 10.1371/journal.pone.0347780 |
| PMID: | 42201910 |
| Βάση Δεδομένων: | MEDLINE |
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