Simultaneous Removal of Heavy-Metal Ions by MnO₂ Loaded D301 Resin

Abstract:

MnO₂-loaded D301 weak basic anion exchange resin was used as adsorbent to simultaneously remove Co²⁺, Ni²⁺, Cd²⁺, Zn²⁺ and Cu²⁺ from aqueous solution contained high concentration of alkali and alkaline-earth metals ions. The effects of solution pH and coexistent ions on the adsorption were investigated. The results indicated that Co²⁺, Ni²⁺, Cd²⁺, Zn²⁺ and Cu²⁺ can be simultaneously removed in the wide pH range of 3 to 8. The coexistence of PO₄³⁻ decreased the heavy metal ions removal rate, but for other high concentrations coexistence cations and anions such as Na⁺, K⁺, Cl⁻, NO₃⁻, SO₄²⁻ and HCO₃⁻, there is no significant impact on removal rate of heavy metals. The adsorption isotherm can be well described by Langmuir isotherm. The adsorption processes followed the pseudo first-order kinetics model. High adsorption capacity makes it a good promising candidate material for simultaneous removal of Co²⁺, Ni²⁺, Cd²⁺, Zn²⁺ and Cu²⁺ from aqueous solution with the co-existence of high concentration of alkali and alkaline-earth metals ions.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 2791-2796
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.2791
• Online since: May 2011
• Authors: Hong Mei Ma, Zhi Liang Zhu, Yong Qian Cheng
• Keywords: Adsorption, Heavy Metals Removal, MnO₂ Loaded D301 Resin

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