Yanisa Limsuwan.. Developing functional adsorbents via radiation processing and scaling-up adsorption process of heavy metal ions in water. Doctoral Degree(Chemical Engineering). King Mongkut's University of Technology North Bangkok. Central Library. : King Mongkut's University of Technology North Bangkok, 2024.
Developing functional adsorbents via radiation processing and scaling-up adsorption process of heavy metal ions in water
Abstract:
Currently, the chemical industry in Thailand generates a significant amount of
wastewater contaminated with heavy metal ions. This research aims to synthesize new adsorbent materials for the removal of heavy metal ions from wastewater using nuclear radiation technologies, such as gamma rays and electrons. The study successfully synthesized a new adsorbent, PE/PP NWF-g-PBMEP, which was modified with the monomer BMEP for copper ion adsorption. The results indicated that the Freundlich and pseudo-second-order kinetic models effectively described the adsorption process.
Furthermore, a continuous adsorption study was conducted using a trickle tray column design, examining various parameters. The results aligned with three mathematical
models: Thomas, Yoon-Nelson, and Adams-Bohart, and the cyclic adsorption-
desorption tests demonstrated the materials' potential for regeneration.
Another new adsorbent, NF-g-Poly(NMA-co-PMA), was synthesized to target
both cationic and anionic heavy metal ions, utilizing electron beam graft polymerization techniques. Adsorption tests revealed that this material was effective in adsorbing both anionic (chromium) and cationic ions (lead, cadmium, copper). In summary, both newly synthesized adsorbents, created through nuclear radiation exposure, demonstrated effective heavy metal ion removal from water sources, significantly enhancing their potential for industrial wastewater treatment applications.