Publications by authors named "Yoshinori Kitao"
Article Synopsis
- A new polymeric adsorbent was created by modifying a polyethylene mesh with dimethylaminoethyl methacrylate (DMAEMA) and further treating it with quaternizing agents, verified using FT-IR and XPS techniques.
- The best performance for removing hexavalent chromium (Cr(VI)) was found at a grafted amount of 2.6 mmol/g, with efficiencies influenced by the degree of quaternization and the length of alkyl chains in the quaternizing agents.
- The adsorption and subsequent desorption of Cr(VI) ions were successful and stable, showing that the modified meshes can effectively be used to clean up Cr(VI) from solutions, with kinetic behavior matching established models.
Polyethylene (PE) plates grafted with a neutral hydrophilic monomer, methacrylamide (MAAm), and a cationic monomer, 2-(dimethylamino)ethyl methacrylate (DMAEMA), (PE-g-PMAAm)-g-PDMAEMA plates, were prepared by the two-step photografting. The Cr(VI) ion adsorption of the resultant (PE-g-PMAAm)-g-PDMAEMA plates was investigated as a function of the initial pH value, temperature, and grafted amounts of PMAAm and PDMAEMA. The adsorption capacity of the (PE-g-PMAAm)-g-PDMAEMA plates had the maximum at the initial pH value of 3.
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