High-performance cellulose acetate fibers-loaded Alca layered double oxide adsorbents towards efficient elimination of anionic pollutants: Mechanism adsorption and RSM-CCD approach.

IF 7.7 1区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY International Journal of Biological Macromolecules Pub Date : 2024-11-16 DOI:10.1016/j.ijbiomac.2024.137788

Fatemeh Baahmadi, Hamid Abbasi-Asl, Mehrorang Ghaedi, Mohammad Mehdi Sabzehmeidani, Ardeshir Shokrollahi

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Abstract

In the present research, we investigate Congo red (CR) removal by layered double hydroxide and oxide AlCa on cellulose acetate (CA) fiber as anion-adsorbents in aqueous solution. The as-prepared composite was characterized by FE-SEM, XRD, FTIR, EDS-mapping and BET-BJH analyses. The CR adsorption ability on AlCa LDH/CA and AlCa LDO/CA adsorbents was evaluated. The removal property, dye adsorption and filtration properties of the AlCa LDO/CA composite were studied for removal CR based on central composite design (CCD) technique through investigating operational variables (temperature, adsorbent dosage, pH and contact time). The fabricated AlCa LDO/CA composite indicates a high removal efficiency up to 98.7 % for the CR removal in the 16 min. The data of the adsorption equilibrium were described by the Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherms, and exhibited that AlCa LDH/CA fibers and AlCa LDO/CA fibers followed a pseudo-second-order kinetic model and Langmuir isotherm. The stability of Al-Ca-LDO/CA fibers nanocomposite was indicated that it was >95 % after eight cycles for removal of CR in the batch method on stirrer. The findings illustrated that appropriate AlCa LDO/CA fiber could be an efficient technique for CR elimination.

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高性能醋酸纤维素纤维负载 Alca 层状双氧化物吸附剂可高效去除阴离子污染物：机理吸附和 RSM-CCD 方法。

在本研究中，我们研究了在水溶液中以醋酸纤维素（CA）纤维作为阴离子吸附剂，利用层状双氢氧化物和氧化铝 Ca 去除刚果红（CR）。对制备的复合材料进行了 FE-SEM、XRD、FTIR、EDS 图谱和 BET-BJH 分析。对 AlCa LDH/CA 和 AlCa LDO/CA 吸附剂的 CR 吸附能力进行了评估。基于中心复合设计（CCD）技术，通过研究操作变量（温度、吸附剂用量、pH 值和接触时间），研究了 AlCa LDO/CA 复合材料去除 CR 的去除性能、染料吸附性能和过滤性能。所制备的 AlCa LDO/CA 复合材料在 16 分钟内对 CR 的去除率高达 98.7%。吸附平衡数据由 Langmuir、Freundlich、Temkin 和 Dubinin-Radushkevich 等温线描述，结果表明 AlCa LDH/CA 纤维和 AlCa LDO/CA 纤维遵循伪二阶动力学模型和 Langmuir 等温线。结果表明，在搅拌器上采用批量法去除 CR，纳米 Al-Ca-LDO/CA 纤维在 8 个循环后的稳定性大于 95%。研究结果表明，适当的 AlCa LDO/CA 纤维是一种有效的去除 CR 的技术。

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来源期刊

International Journal of Biological Macromolecules 生物-生化与分子生物学

CiteScore

13.70

自引率

9.80%

发文量

2728

审稿时长

64 days

期刊介绍： The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.