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Synthesis of MgAl-LDH@ZIF-8 composites by in situ growth method for highly efficient phosphate removal 相关领域
化学
原位
磷酸盐
化学工程
生物化学
有机化学
工程类
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Abstract Removal of phosphate from wastewater by adsorption has become one of the effective ways to mitigate the negative effects of eutrophication in water bodies, and efficient adsorbent is the key. In this study, MgAl-LDH@ZIF-8 composites were prepared by in situ growth of zeolite imidazole framework-8 (ZIF-8) on layered double hydroxide (MgAl-LDH) for efficient removal of phosphates in wastewater. Compared with pure ZIF-8 and MgAl-LDH, MgAl-LDH@ZIF-8 has higher phosphate removal efficiency of up to 99%. Its maximum adsorption capacity was 68.53 mg P g−1. The adsorption process conformed to the pseudo-second-order kinetic model and Langmuir isotherm model. The thermodynamic results indicate that the adsorption process is spontaneous and endothermic. |
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(2025-6-4)