Adsorption of In³⁺ from Aqueous Solutions by Persimmon Tannins-Immobilized Collagen Fiber

Abstract:

In the present work, a novel adsorbent to effectively adsorbed In3+ from an aqueous solution has been prepared by immobilizing persimmon tannin (PT) on collagen fiber. The adsorption capacities of In3+ on the immobilized PT were evaluated under various treatment conditions including the initial solution pH, solid-liquid ratio and temperature. The results showed that the effect of initial solution pH and solid-liquid ratio on the adsorption capacity were remarkable, while the influence of temperature was insignificant. The adsorption capacity reached 420 mg/g at 303 K and pH 5.0 when the initial concentration of In3+ was 100 mg/L and solid-liquid ratio was 0.2. The adsorption isothermal and kinetic data fitted best to the Freundlich model and the pseudo-second-order model, respectively.All these results indicated that adsorbent adsorbed efficiently and could be used as a low-cost alternative for the adsorption of In3+ in wastewater treatment.

• Periodical: Advanced Materials Research (Volume 788)
• Pages: 114-118
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.788.114
• Online since: September 2013
• Authors: Feng Lei Liu, Zhong Min Wang, Huai Gang Zhang, Gui Yin Li, Huai Ying Zhou
• Keywords: Adsorption Capacity, Collagen Fiber, In³⁺, Persimmon Tannins

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