Highly porous biomass-based capacitive deionization electrodes for water defluoridation

Simple item page
dc.contributor.authorElisadiki, Joyce
dc.contributor.authorJande, Yusufu
dc.contributor.authorKibona, Talam Enock
dc.contributor.authorMachunda, Revocatus
dc.date.accessioned2019-12-12T08:52:47Z
dc.date.available2019-12-12T08:52:47Z
dc.date.issued2019-12-09
dc.description.abstractThe high concentration of fluoride (F−) in water sources is the main challenge in major fluoride belts. Though capacitive deionization (CDI) with porous carbon electrodes is the promising alternative in removing charged species from aqueous solution, little has been presented on the usefulness of CDI with biomass-based electrodes in removing F− from natural water existing together with other ions such as Ca2+ and Mg2+. This study investigated the feasibility of using biomass-based electrodes for natural water defluoridation application. Porous carbon was synthesized from jackfruit peels (JFAC) through potassium hydroxide (KOH) activation. Surface morphology, pore structure, and electrochemical properties of the JFAC were investigated. The textural properties of the synthesized carbon and electrochemical characteristics of the fabricated electrodes were found to be influenced by activation temperature. Brunauer-Emmett-Teller (BET) surface area, pore diameter, pore volume, and pore surface area increased with an increase in activation temperature and KOH to carbon ratio. It was further confirmed that as the applied voltage increased from 1.2 to 2 V, the amount of adsorbed anions increased without significantly affecting the pH of the water. At 2.0 V, the electrodes showed a maximum F− adsorption efficiency and electrosorption capacity of 62% and 0.13 mg/g respectively. The electrosorption capacity depends on the initial concentration of the ion in the feed water. It was further observed that natural organic substances contained in the natural water might inhibit JFAC electrode surface and decrease its adsorption efficiency. This study provides cost-effective CDI electrode material prepared from biomass for water defluoridation.en_US
dc.identifier.doihttps://doi.org/10.1007/s11581-019-03372-z
dc.identifier.urihttp://hdl.handle.net/20.500.11810/5341
dc.language.isoenen_US
dc.subjectCapacitive deionization (CDI)en_US
dc.subjectBiomassen_US
dc.subjectPorous carbonen_US
dc.subjectWater defluoridationen_US
dc.subjectElectrosorption capacityen_US
dc.titleHighly porous biomass-based capacitive deionization electrodes for water defluoridationen_US
dc.typeJournal Article, Peer Revieweden_US
Files
Original bundle
Now showing 1 - 6 of 6
Thumbnail Image
Name:
Ionics.PNG
Size:
415.11 KB
Format:
Portable Network Graphics
Description:
Download
Thumbnail Image
Name:
Ionics.PNG
Size:
415.11 KB
Format:
Portable Network Graphics
Description:
Download
Thumbnail Image
Name:
Ionics.PNG
Size:
415.11 KB
Format:
Portable Network Graphics
Description:
Download
Thumbnail Image
Name:
Ionics.PNG
Size:
415.11 KB
Format:
Portable Network Graphics
Description:
Download
Thumbnail Image
Name:
Ionics.PNG
Size:
415.11 KB
Format:
Portable Network Graphics
Description:
Download
Thumbnail Image
Name:
Ionics.PNG
Size:
415.11 KB
Format:
Portable Network Graphics
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Department of Physics