2026-03-14T14:03:56Z https://miyazaki-u.repo.nii.ac.jp/oai

oai:miyazaki-u.repo.nii.ac.jp:00006127.4 2023-07-30T05:47:15Z 73 73:27

Pb(II) adsorption of composite alginate beads containing mesoporous natural zeolite Dolgormaa, Munkhbat Tamiraa, Ganbold Ariunzul, Naranbaatar 80235506 塩盛, 弘一郎 シオモリ, コウイチロウ Ochirkhuyag, Bayanjargal Alginate Beads Natural Zeolite Pb(II) Adsorption Mesoporous Ball milling Natural zeolite beads were prepared by immersing mesoporous zeolite into alginate beads via egg box method and its adsorption properties of Pb（II） ions were investigated in aqueous solution. Crystallinity and size reduction of natural zeolite were enhanced by mechanic modification of ball milling process. FTIR and SEM-EDS analyses confirmed that mechanically modified zeolite particles were incorporated into alginate hydrogel. The highest adsorption amount of zeolite alginate beads was 87.47 mg/g after 20 h adsorption process. SEM-EDS result confirmed that adsorption process is occurred on surface of zeolite alginate beads. Adsorption isotherm data were fitted with Langmuir adsorption isotherm which showed that Pb2+ cation adsorbed into monolayer of adsorbent material. Moreover, we observed that calcium ion released after Pb2+ adsorption process in the feed solution. Therefore, adsorption mechanism of zeolite alginate beads is undergoes complex mechanism including surface sorption and ion exchange of Pb2+ and Ca2+ in beads. American Scientific Publishers 2020-08 jpn journal article http://hdl.handle.net/10458/00010002 https://miyazaki-u.repo.nii.ac.jp/records/6127 https://doi.org/10.1166/jnn.2020.18530 1533-4880 Journal of Nanoscience and Nanotechnology 20 8 5267 5275 https://miyazaki-u.repo.nii.ac.jp/record/6127/files/Pb(II) adsorption_Dolgormaa_202008.pdf application/pdf 883.6 kB 2020-08-31