Keiko Sasaki, Takuya Kaseyama
Preferential sorption of Co2+ ions over Ni2+ ions was achieved using biogenic Mn oxides produced by the Mn-oxidizing fungus Paraconiothyrium sp. WL-2 strain, achieving a maximum selectivity coefficient (αco/ Ni) of 18. This study aimed to elucidate the selective sorption mechanisms by analyzing the differences in how Co2+ and Ni2+ ions interact with the unique properties of biogenic Mn oxides. The methodology involved detailed spectroscopic analysis, comparing the sorption behaviors and mechanisms of Co2+ and Ni2+ ions in biogenic versus synthetic Mn oxides. The results indicated that octahedral Co2+ ions occupy vacancies in the Mn oxide structures, leading to their immobilization through oxidation. In contrast, Ni2+ ions primarily adhere to layer edges without oxidation, highlighting the contrasting sorption pathways. Moreover, the biogenic Mn oxides demonstrated higher Mn(III) content and larger specific surface areas, which contribute to their greater selectivity for Co2+ over Ni2+. This research underscores the potential of utilizing biogenic materials for selective ion removal in various environmental and industrial applications.
@article{de4b1e0c-73d2-4e65-94fd-b63340fc26fc,
title={Selective Sorption of Co2 over Ni2 Using},
author={Keiko Sasaki and Takuya Kaseyama},
year={2026},
language={en}
}TY - JOUR TI - Selective Sorption of Co2 over Ni2 Using AU - Keiko Sasaki AU - Takuya Kaseyama PY - 2026 LA - en ER -
Unknown, Unknown
This chapter discusses metal casting processes, highlighting the diversity and common characteristics among them. The objective is to elucidate the fu
Unknown, Unknown
This study focuses on the fundamental characteristics of solid iron, which is predominantly composed of iron atoms and provides a basis for understand
Ir. Méshac KIME ILUNGA
Ce document traite des procédés métallurgiques spéciaux, en mettant particulièrement l'accent sur l'extraction liquide-liquide, un processus mis au po
Copper solvent extraction units at large hydrometallurgical plants face constraints in metal recovery, phase disengagement, and reagent consumption, d
Non spécifié
L'hydrométallurgie du cuivre, principalement axée sur les minerais oxydés facilement solubles, s'applique également aux minerais sulfurés ou mixtes ap