메타크릴산이 그래프팅된 천연제올라이트의 중금속제거에 관한 연구 = Study of removal characteristics of anionic and cationic metals using of poly (methacrylic acid) grafted mesoporous natural zeolite

다국어 초록 (Multilingual Abstract)

Polymerized mesoporous nature zeolites (pMNZ) was simply prepared by acid treatment and polymerization of metaclic acid, which evaluated as adsorbents for the removal of cationic/anionic heavy metals from aqueous solutions. The effects of treatment time and different acids during synthesis on the pore structure of the MNZ were studied, and the pMNZ samples were characterized by nitrogen full isotherms, XRF analysis, and FT-IR spectroscopy. The MNZ prepared using hydrochloric acid had higher meso pore volume, and surface area. The BET analysis showed that the surface area of MNZ is 82 m2/g greater than that of natural zeolite that is 39 m2/g. We investigated the adsorption ability of pMNZ for metal ions (Cu (II), Mn (II), and As (V)) and evaluated the influence of pH. The removal efficiencies of pMNZ for Cu(II), Mn(II), As(V) were 44%, 51%, 99% and qe were 0.88, 0.75, 0.04, respectively. In addition, the adsorption kinetics were evaluated using pseudo-first-order and pseudo-second-order models. The internal and external diffusion models were studied to explain the adsorption process in pMNZ. The adsorption capacity resulted that the pMNZ could eliminate the anionic, cationic metal ions from aqueous solution at pH range of 6-10 and different kinetics were examined to explain the adsorption process.