Cobalt removal capacity on hydroxyapatite-zeolite composite upcycled from blast furnace slag
Yoshifumi Kondo, Tomoyo Goto, Yuma Amemiya, Yasutaka Kuwahara, 弘巳 山下, Tohru Sekino · 2026
Read Cobalt removal capacity on hydroxyapatite-zeolite composite upcycled from blast furnace slag by Yoshifumi Kondo, Tomoyo Goto, Yuma Amemiya, Yasutaka Kuwahara, 弘巳 山下, Tohru Sekino (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/openalex-w7208767446.txt.
Description
Yoshifumi Kondo and five colleagues at Osaka-area universities report a water-cleaning material made from steel waste. Blast furnace slag is an abundant industrial by-product, and the team converted it into a composite of hydroxyapatite and zeolite, two minerals known for trapping metal ions. Their target was cobalt ions, a toxic contaminant in water. The study tests how fast and how fully the new material pulls cobalt from solution.
The composite removed cobalt within an hour of contact, reaching nearly complete removal at lower concentrations. Its uptake pattern matched a standard model of surface absorption, and its maximum capacity rivaled a simple mixture of high-purity zeolite and hydroxyapatite. As cobalt was taken up, sodium and calcium ions were released in exchange. Turning slag into a sorbent this effective points to a double gain: less industrial waste and cleaner water.
Catalog record
| CREATOR | Yoshifumi Kondo, Tomoyo Goto, Yuma Amemiya, Yasutaka Kuwahara, 弘巳 山下, Tohru Sekino |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 26 KB |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | OpenAlex / Journal of the Ceramic Society of Japan |