Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, I-90128, Palermo, Italy.
Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166, Messina (Vill. S. Agata), Italy.
Environ Sci Pollut Res Int. 2018 Feb;25(5):4238-4253. doi: 10.1007/s11356-017-0779-3. Epub 2017 Nov 27.
The adsorption capacity of ground hazelnut (HS) and almond (AS) shells towards Pb(II) and Cd(II) has been studied at pH = 5, in NaNO and NaCl ionic media, in the ionic strength range 0.05-0.5 mol L. Kinetic and equilibrium experiments were carried out by using the Differential Pulse Anodic Stripping Voltammetry technique to check the amount of the metal ion removed by HS and AS materials. Different kinetic and equilibrium equations were used to fit experimental data and a statistical study was done to establish the suitable model for the data fitting. A speciation study of the metal ions in solution was also done in order to evaluate the influence of the ionic medium on the adsorption process. TGA-DSC, FT-IR, and SEM-EDX techniques were used to characterize the adsorbent materials. The mechanism of metal ions adsorption was explained on the basis of the results obtained by the metal ions speciation study and the characterization of materials.
榛子（HS）和杏仁（AS）壳对 Pb(II) 和 Cd(II) 的吸附能力在 pH = 5 下，在 NaNO 和 NaCl 离子介质中，在离子强度为 0.05-0.5 mol L 的范围内进行了研究。通过使用差分脉冲阳极溶出伏安法技术进行了动力学和平衡实验，以检查 HS 和 AS 材料去除的金属离子量。使用不同的动力学和平衡方程来拟合实验数据，并进行了统计研究，以确定适合数据拟合的模型。还对溶液中的金属离子进行了形态研究，以评估离子介质对吸附过程的影响。TGA-DSC、FT-IR 和 SEM-EDX 技术用于表征吸附剂材料。根据金属离子形态研究和材料表征的结果，解释了金属离子吸附的机制。
