Abstract Simultaneous adsorption of heavy metals in complex multi metal system is insufficiently explored. This research gives results of key process parameters optimization for simultaneous removal of Cd(II), Co(II), Cr(III), Cu(II), Mn(II), Ni(II) and Pb(II) from aqueous solution (batch system). New lemon peel-based biomaterial was prepared and characterized by infrared spectroscopy with Fourier transformation (FTIR), scanning electron microscopy (SEM), electron dispersive spectroscopy (EDS), while the quantification of metals was made by atomic absorption spectrometry (AAS). Simultaneous removal of seven metals ions was favorable at pH 5 with 300 mg/50 mL solid-liquid phase ratio, within 60 min at room temperature with total obtained adsorption capacity of 46.77 mg g−1. Kinetic modeling showed that pseudo-second order kinetic and Weber-Morris diffusion models best describe the adsorption mechanism of all seven heavy metals onto lemon peel.

中文翻译：

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新型柠檬皮基生物材料同时吸附水中重金属

摘要 在复杂的多金属体系中同时吸附重金属的研究还不够深入。本研究给出了从水溶液中同时去除 Cd(II)、Co(II)、Cr(III)、Cu(II)、Mn(II)、Ni(II) 和 Pb(II) 的关键工艺参数优化结果（批处理系统）。制备了新的柠檬皮基生物材料，并通过红外光谱和傅里叶变换 (FTIR)、扫描电子显微镜 (SEM)、电子色散光谱 (EDS) 进行表征，同时通过原子吸收光谱 (AAS) 对金属进行定量。在 300 mg/50 mL 固液相比的 pH 5 条件下，在室温下 60 分钟内同时去除 7 种金属离子是有利的，获得的总吸附量为 46.77 mg g-1。