Publication Date
12-2023
Date of Final Oral Examination (Defense)
8-30-2023
Type of Culminating Activity
Dissertation
Degree Title
Doctor of Philosophy in Materials Science and Engineering
Department Filter
Materials Science and Engineering
Department
Materials Science and Engineering
Supervisory Committee Chair
David Estrada, Ph.D.
Supervisory Committee Member
Luis A. Diaz Aldana, Ph.D.
Supervisory Committee Member
Hui (Claire) Xiong, Ph.D.
Supervisory Committee Member
Brian Jaques, Ph.D.
Abstract
The growing global demand for clean water, coupled with increasing concerns around aquatic pollution, necessitate the development of high performing and energy-efficient technologies for wastewater remediation. Capacitive Deionization (CDI) has emerged as a promising electrochemical method for desalination and removal of contaminants from various water sources. Despite its potential, CDI faces a significant bottleneck concerning the selection and optimization of suitable electrode materials. The choice of electrode materials critically influences the performance and efficiency of the CDI system, with the quest for an ideal material remaining a challenging and ongoing research endeavor. This dissertation explores potential of using MXene materials as CDI electrodes to address the challenges associated with the commercialization of the technology.
The research begins with an overview of the fundamental principles of CDI and the crucial role of electrodes in the process. Experimental investigations are conducted using lab-scale flow electrode CDI prototype with activated carbon (AC) and Ti3C2 MXene as electrodes in a mono-ionic simulated wastewater system. Performance metrics, such as ion adsorption capacity, energy efficiency, regeneration efficiency, and cyclic stability, are quantitatively assessed to facilitate a direct comparison between the two materials.
The research begins with an overview of the fundamental principles of CDI and the crucial role of electrodes in the process. Experimental investigations are conducted using lab-scale flow electrode CDI prototype with activated carbon (AC) and Ti3C2 MXene as electrodes in a mono-ionic simulated wastewater system. Performance metrics, such as ion adsorption capacity, energy efficiency, regeneration efficiency, and cyclic stability, are quantitatively assessed to facilitate a direct comparison between the two materials. solutions are carefully formulated to mimic real-world water conditions, incorporating a diverse range of cations and anions at high concentrations.
The outcomes of this research contribute to advancing the understanding of MXene electrode selectivity in multi-ion capacitive deionization. The findings from this dissertation can serve as a foundation for future research endeavors and guide the development of tailored CDI systems for diverse water treatment applications.
DOI
https://doi.org/10.18122/td.2242.boisestate
Recommended Citation
Mansoor, Naqsh E., "Flow Electrode Capacitive Deionization Using MXene Suspension Electrodes for Energy Efficient Water Remediation" (2023). Boise State University Theses and Dissertations. 2242.
https://doi.org/10.18122/td.2242.boisestate
