A master thesis from Aalborg University
In-situ Electrochemical Regeneration of Granular Activated Carbon - Experimental and Theoretical Study Regarding the Treatment Performance of Dye and Pesticides
Author(s)
Term
4. term
Education
Publication year
2020
Submitted on
2020-06-04
Pages
96 pages
Abstract
A range of micropollutants, including several pharmaceuticals and pesticides, are inadequately treated in water treatment plants. With activated carbon, adsorption processes, can be employed as a resolution method to reduce their discharge into aquatic environments. This paper highlights and experimentally investigates the combinational treatment method of adsorption with electrochemical regeneration. Lab scale parameter studies were performed to investigate the various operational factors of the adsorption system, which consisted of temperature, the added carbon amount and adsorption combined with applied electric potential. HGR-AC was utilised in a developed electrochemical batch reactor to determine the removal efficiency of organic contaminants represented with the dye, RNO. With the change from 10 mg HGR-AC to 500 mg HGR-AC, the removal efficiency increased from 42% to 97%. The combined adsorption and applied electric potential also showed to be proficient and improved the degradation process of RNO. Results obtained from published literature were used for the investigation of electrochemical regeneration, through the evaluation of the operational parameters’ adjustment, such as the variation in regeneration time, regeneration cycles and current intensity. The found results suggested a dependency on the system’s operational conditions used; thus, final results are varied. Five regeneration cycles were the stated maximum number of practical cycles, along with a regeneration time ranging from two to five hours. The highest regeneration efficiency achieved from the published studies was 98%, which used the highest current of 3 A. The information provided in this thesis showed the success rate of electrochemical regeneration through different parameter perspectives, which can further aid advance for future research in this scientific field.
Documents
Colophon: This page is part of the AAU Student Projects portal, which is run by Aalborg University. Here, you can find and download publicly available bachelor's theses and master's projects from across the university dating from 2008 onwards. Student projects from before 2008 are available in printed form at Aalborg University Library.
If you have any questions about AAU Student Projects or the research registration, dissemination and analysis at Aalborg University, please feel free to contact the VBN team. You can also find more information in the AAU Student Projects FAQs.