The effect of slurry wet mixing time, thermal treatment, and method of electrode preparation on membrane capacitive deionisation performance

Simple item page
dc.contributor.authorBotha, Ebrahiem
dc.contributor.authorSmith, Nafeesah
dc.contributor.authorHlabano-Moyo, Bongibethu
dc.date.accessioned2022-05-23T09:02:14Z
dc.date.available2022-05-23T09:02:14Z
dc.date.issued2021
dc.description.abstractCapacitive deionisation (CDI) electrodes with identical composition were prepared using three deposition methods: (1) slurry infiltration by calendering (SIC), (2) ink infiltration dropwise (IID), and (3) ink deposition by spray coating (IDSC). The SIC method clearly showed favourable establishment of an electrode with superior desalination capacity. Desalination results showed that electrodes produced from slurries mixed longer than 30 min displayed a significant reduction in the maximum salt adsorption capacity, due to the agglomeration of carbon black. The electrodes were then thermally treated at 130, 250, and 350 ◦C. Polyvinylidene difluoride (PVDF) decomposition was observed when the electrodes were treated at temperatures higher than 180 ◦C. The electrodes treated at 350 ◦C showed contact angles of θ = 0◦ . The optimised electrodes showed a salt adsorption capacity value of 24.8 mg/g (130 ◦C). All CDI electrodes were analysed using specific surface area by N2 adsorption, contact angle measurements, conductivity by the four-point probe method and salt adsorption/desorption experiments. Selected reagents and CDI electrodes were characterised using thermogravimetric analysis coupled with mass spectrometry (TGA-MS) and differential scanning calorimetry (DSC), as well as scanning electron microscopy energy dispersive X-ray spectroscopy (SEM-EDS).en_US
dc.identifier.citationBotha, E. et al. (2021). The effect of slurry wet mixing time, thermal treatment, and method of electrode preparation on membrane capacitive deionisation performance. Processes, 9(1). http://dx.doi.org/10.3390/ pr9010001en_US
dc.identifier.issn2227-9717
dc.identifier.urihttp://dx.doi.org/10.3390/ pr9010001
dc.identifier.urihttp://hdl.handle.net/10566/7441
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.subjectCapacitive deionisationen_US
dc.subjectThermal treatmenten_US
dc.subjectWet mixingen_US
dc.subjectMaximum salt adsorption capacityen_US
dc.subjectContact angleen_US
dc.titleThe effect of slurry wet mixing time, thermal treatment, and method of electrode preparation on membrane capacitive deionisation performanceen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
botha_the effect of slurry wet mixing time_2021.pdf
Size:
4.22 MB
Format:
Adobe Portable Document Format
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

Research Articles (SAIAMC)