微晶纤维素生物吸附剂从液相环境中吸附铜离子和铁离子的洞察力:实验和模型分析

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of the Iranian Chemical Society Pub Date : 2024-05-31 DOI:10.1007/s13738-024-03049-z
Mohammad Abdullah, Luqman Chuah Abdullah, Abel Adekanmi Adeyi, Siti Nurul Ain Md Jamil, Thomas Shean Yaw Choong, Rohah A. Majid
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摘要

本文评估了批处理系统微晶纤维素(MCC)吸附水生环境中铜和铁的能力。采用场发射扫描电子显微镜(FESEM)、零点电荷和傅立叶变换红外光谱(FTIR)研究了微晶纤维素的物理化学和形态特征。通过改变溶液 pH 值、MCC 剂量、铜和铁的初始浓度以及驻留时间,采用批次法对 Cu(II)和 Fe(II)进行去除。在 pH 值为 7 时,铜(II)和铁(II)的最大去除率分别为 99.5%和 96.4%;在 MCC 剂量的影响下,1.0 g/L 的吸附剂对铜(II)和铁(II)的去除率最高,分别为 99.8%和 88.63%。这两种金属的平衡数据都与 Langmuir 和 Freundlich 等温线非常吻合,分别代表单层和多层吸附系统。室温下,MCC 对铜(II)和铁(II)离子的最大吸附容量分别为 534.61 毫克/克和 845.75 毫克/克。伪二阶模型最好地描述了铜和铁的动力学数据,表明带负电荷的 MCC 与吸附剂之间的化学吸附关系占主导地位。经过连续四个再生周期后,MCC 聚合物仍能保持其最大吸附能力,这表明它能有效地从水溶液中分离铜离子和铁离子。研究结果表明,使用环保型微晶纤维素可成功去除水生环境中的有毒重金属。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Insight into copper and iron ion sequestration from liquid-phase environment by microcrystalline cellulose biosorbent: experimental and modelling analyses

The paper assesses batch system microcrystalline cellulose (MCC) adsorptive ability for copper and iron uptake from aquatic environment. Field emission scanning electron microscope (FESEM), point zero charge and Fourier transform infrared (FTIR) spectroscopy were used to examine the physicochemical and morphological features of MCC. The batch system of the sequestration progression for the elimination of Cu(II) and Fe(II) was used by varying the solution pH, MCC doses, initial copper and iron concentration, and resident time. The maximum removal percentage for Cu(II) and Fe(II) were 99.5% and 96.4%, respectively, at pH 7. The influence of MCC dosage showed the 1.0 g/L of adsorbents results the highest percentage of Cu(II) (99.8%) and Fe(II) (88.63%) correspondingly. Equilibrium data for both metals were well fitted with both Langmuir and Freundlich isotherms, representing monolayer and multilayer adsorption systems. The maximum sorption capacity of MCC was 534.61 mg/g and 845.75 mg/g, respectively, for Cu(II) and Fe(II) ions at room temperature. Pseudo-second-order model best describes the copper and iron kinetic data, signifying the dominance of chemisorption adsorption relation between the negatively charged MCC and adsorbates. After four successive regeneration cycles, the MCC polymer maintained its maximal adsorption capacity, demonstrating effective copper and iron ion separation from aqueous solution. According to the study’s findings, poisonous heavy metals can be successfully removed from aquatic environments using eco-friendly microcrystalline cellulose.

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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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