• Harold Ifedayo Oyovwevotu
4. term, Chemical Engineering, Master (Master Programme)
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.
Publication date4 Jun 2020
Number of pages96
ID: 333601334