Studies on Indian Ocean manganese nodules. 3: Adsorption of aqueous selenite on ferromanganese nodules
- Regional Research Lab., Bhubaneswar (India)
Adsorption of aqueous selenite (SeO{sub 3}{sup 2{minus}}) on Indian Ocean manganese nodules was studied as a function of time, temperature, pH, and concentrations of adsorbate and adsorbent in acetic acid-sodium acetate buffer medium. Analysis of adsorption data supports a heterogeneous nature for the surface of manganese nodules. The adsorption capacity of various manganese nodules for selenite was correlated with their chemical composition and surface properties. Adsorption of selenite/selenate on hydrous oxides of iron, manganese, and aluminum appears to be an efficient and inexpensive method for removing trace contaminants. Manganese nodules, a naturally occurring complex material, with its high contents of oxides/oxyhydroxides of Mn, Fe, Si, and Al, high porosity, and high surface area may be a suitable substitute for conventional adsorbents.
- OSTI ID:
- 483810
- Journal Information:
- Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 2 Vol. 187; ISSN 0021-9797; ISSN JCISA5
- Country of Publication:
- United States
- Language:
- English
Similar Records
Studies on ferric oxide hydroxides. 3: Adsorption of selenite (SeO{sub 3}{sup 2{minus}}) on different forms of iron oxyhydroxides
Adsorption mechanisms of selenium oxyanions at the aluminum oxide/water interface