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Development of electrochemical cell for capacitive deionization


The capacitive deionization (CDI) is based on the removal of ions by capturing and storing them in the double electric layer formed when a pair of electrodes are polarized. Due to the low energy consumption and ease maintenance and operation, the interest of the scientific community has been growing exponentially in the las decade, aiming applications such as effluent and water treatment (desalination and softening). In this project we propose the development of an electrochemical cell for CDI involving the following steps: 1) Development of electrodes of activate carbon prepared using the glycerol from the biodiesel production; 2) study of electrode configurations concerning to the electrochemical (symmetry, asymmetry, and membranes) and mass transfer (flow-through e flow-by) aspects, and 3) construction and evaluation of a CDI cell with engineering design to be applied for capacitive deionization under actual galvanostatic and single-pass conditions and taking into account the concentration variation over the flow direction.By addressing these aspects, it is expected to achieve a CDI cell that not only ensure a high removal rate, but also stable over the electrosorption/desorption cycles. The fundamental phenomena to be addressed in this proposal will subsidize the design of the CDI cell by understanding the role of the structural, textural, and electrochemical properties of the activate carbon on the charge efficiency, stability and process kinetics of the electrodes. The understanding of how the hydrodynamic aspects have influence on the mass transfer and process efficacy will also be addressed. (AU)

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
JUCHEN, PATRICIA T.; RUOTOLO, LUIS A. M.. Roles of mass transfer and cell architecture in electrochemical desalination performance using polyglycerol activated carbon electrodes. CHEMICAL ENGINEERING JOURNAL, v. 452, p. 11-pg., . (17/19838-5, 20/12706-9)
MACHADO, F.; TEIXEIRA, A. C. S. C.; RUOTOLO, L. A. M.. Critical review of Fenton and photo-Fenton wastewater treatment processes over the last two decades. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, v. N/A, p. 38-pg., . (17/19838-5, 20/12706-9)
DE FREITAS, JULIANA V.; GODIYA, CHIRAG B.; FARINAS, CRISTIANE S.; RUOTOLO, LUIS A. M.. Adsorptive removal of aflatoxin B-1 from simulated animal gastrointestinal tract using sugarcane bagasse fly ash. Brazilian Journal of Chemical Engineering, v. N/A, p. 9-pg., . (17/19838-5, 16/10636-8, 20/12706-9)
JUCHEN, PATRICIA T.; BARCELOS, KAMILLA M.; OLIVEIRA, KAIQUE S. G. C.; RUOTOLO, LUIS A. M.. Using crude residual glycerol as precursor of sustainable activated carbon electrodes for capacitive deionization desalination. CHEMICAL ENGINEERING JOURNAL, v. 429, . (17/19838-5, 20/12706-9)
VERZOLA, MARCO A.; OLIVEIRA, KAQUE S. G. C.; RUOTOLO, LUS A. M.. Optimization of electrochemical degradation of organics considering the simultaneous effects of electroactive area and mass transfer on current modulation. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 10, n. 2, p. 9-pg., . (20/12706-9, 17/19838-5)
OLIVEIRA, JESSICA A. A.; SILVA, ROBERTA R. M. A.; DA SILVA, GELSON T. S. T.; TORRES, JULIANA A.; VALI, ABBAS; RIBEIRO, CAUE; RAJESHWAR, KRISHNAN; RUOTOLO, LUIS A. M.. Copper vanadates: Targeted synthesis of two pure phases and use in a photoanode/cathode setup for selective photoelectrochemical conversion of carbon dioxide to liquid fuel. Materials Research Bulletin, v. 149, p. 10-pg., . (16/21515-7, 20/12706-9, 19/21496-0, 18/01258-5)
OLIVEIRA, KAIQUE S. G. C.; BARCELOS, KAMILLA M.; LADO, JULIO J.; PALMA, JESUS; RUOTOLO, LUIS A. M.. Improving the electrochemical desalination performance of chloride-doped polyaniline activated carbon electrode by tuning the synthesis method. CHEMICAL ENGINEERING JOURNAL, v. 457, p. 12-pg., . (20/12706-9, 17/19838-5)

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