作    者：宗恩敏, 等
影響因子：3.15
刊物名稱：Applied Surface Science
出版年卷：2016, 387: 419-430

文章摘要：Zirconium(IV) loaded lignocellulosic butanol residue (LBR-Zr) used for the adsorption of phosphate (P)ions from aqueous solution was synthesized and evaluated. The adsorption isotherms were fitted wellwith the Freundlich and Temkin modes. Thermodynamic analyses indicated that phosphate adsorp-tion on the LBR-Zr increased with increasing temperature from 298 to 338 K. The kinetic datas weredescribed better by the pseudo-second-order adsorption kinetic rate model. Increasing pH suppressedphosphate adsorption. Coexisting anions study exhibited that the incorporation of CO32−anion had thelargest influence on the phosphate adsorption capacity. The mechanism of adsorption process on LBR-Zrwas analyzed by FTIR (Fourier transform infrared spectroscopy), scanning electron microscope (SEM)with an EDX (energy dispersive X-ray) and X-ray photoelectron spectroscopy (XPS) technologies, respec-tively. The above results confirmed that surface hydroxyl groups on biosorbent LBR-Zr were replacedby phosphate. The LBR-Zr with good specific affinity towards phosphate was a promising biosorbent forphosphate removal from aqueous solution. The research would be beneficial for developing a promising,eco-friendly phosphate biosorbent from plentiful lignocellulosic butanol residue.

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