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035 _a.b1240861x
099 9 _aAIT Thesis no.EV-23-14
100 0 _aTanaset Kittipotiklang
245 1 0 _aDevelopment of carbon-based electrode in capacitive deionization for saline water desalination
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2023
300 _a53 leaves :
_bill.
490 1 _aThesis ;
_vno. EV-23-14
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Environmental Engineering and Management
502 _aThesis (M. Eng.) - Asian Institute of Technology, 2023
520 _aA capacitive deionization (CDI) is a promising desalination technology. It can use for treating low salinity water. Ions can be trapped in electrode by using electrosorption mechanism. Advantages of this technology is low frequency of membrane replacement, simple operation, and low energy requirement. In this study, optimization of low-cost electrode materials and desalination performance on low salinity water on various operating parameters was investigated. There are three materials for electrode fabrication. Activated carbon (AC), carbon black (CB), and polytetrafluoroethylene (PTFE) as polymer binder was optimized in this study. Ethanol was used as solvent for making carbon slurry. The electrode was fabricated by using manual blade coating method and spray coating method. However, the presence of cracking on electrode was occurred in manual blade coating. There was no cracking for spray coating. Therefore, spray coating was selected for further electrode fabrication. Then, there are three electrode composition (AC:CB:PTFE) which are 9:0:1, 8:1:1, and 7:2:1. The electrode 8:1:1 is the easiest to fabricate. Therefore, it was investigated for the lab-scale CDI reactor desalination performance on various applied voltage and spacer distance. It was tested on 1.2 V, 1.4 V, 1.6 V, 1.8 V, and 2.0 V applied voltage and also tested on 1.0 mm., 2.0 mm., and 4.0 mm. spacer distance. The highest condition for desalination performance is 2.0 V applied voltage and 2.0 mm. spacer distance. Removal efficiency is equal to 23.75%. Salt adsorption capacity is 0.0208 mg/g of electrode. Average salt adsorption rate is 3.4636E-04 mg/g/min. The volumetric and molar energy consumption are equal to 0.0934 kWh/m3 and 0.0067 kWh/mol respectively.
650 0 _aSaline water conversion
650 0 _aElectrodes
700 1 _aXue, Wenchao,
_eChairperson
700 0 _aEkbordin Winijkul,
_eExamination committee
700 1 _aRicco, Raffaele,
_eExamination committee
710 2 _aHer Majesty the Queen{u2019}s Scholarships (Thailand),
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-23-14
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B19394
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