Removal of single dye and dye mixture from aqueous solution with alginate-coated calcined layered double hydroxide and illite clay composite beads

Q2 Engineering

Materials Research Innovations Pub Date : 2023-01-02 DOI:10.1080/14328917.2022.2163112

A. El khanchaoui, M. Sajieddine, M. Mansori, A. Moubarik, A. Essoumhi

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引用次数: 1

Abstract

ABSTRACT Alginate-coated calcined layered double hydroxide and illite clay (Alg@CLDH@ Illite) composite beads were fabricated and tested for single and mixture dye adsorption from aqueous solution. Adsorption characteristics of the as-fabricated beads were assessed by using Methylene Blue (MB) and Congo Red (CR) as adsorbates. As-prepared samples were characterised by using X-ray diffraction (XRD), Thermogravimetry/Differential Scanning Calorimetry (TG–DSC), Fourier transform infrared spectroscopy (FTIR), and point of zero charge (pHpzc). The characterisations demonstrated that the incorporation of CLDH powder/clay mixture can not only enhance thermal stability but also can improve the adsorption performance. The adsorption kinetics of dyes onto composite beads followed the linear form of pseudo-second-order model and their equilibrium data were fitted well to the Freundlich model. The results showed that the Alg@CLDH@Illite composite is able to adsorb anionic and cationic dyes from a binary dye mixture with high sorption capacities in short time 50 min.

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海藻酸盐包覆煅烧层状双氢氧化物和伊利石粘土复合微珠去除水溶液中的单一染料和混合染料

制备了海藻酸盐包覆的层状双氢氧化物和伊利石粘土(Alg@CLDH@伊利石)复合微珠，并对水溶液中单一和混合染料的吸附性能进行了测试。以亚甲基蓝(MB)和刚果红(CR)为吸附剂，对制备的微球的吸附特性进行了评价。采用x射线衍射(XRD)、热重/差示扫描量热法(TG-DSC)、傅里叶变换红外光谱(FTIR)和零电荷点(pHpzc)对制备的样品进行了表征。实验结果表明，掺入CLDH粉/粘土混合物不仅可以提高热稳定性，还可以改善吸附性能。染料在复合微珠上的吸附动力学符合拟二阶模型的线性形式，其平衡数据符合Freundlich模型。结果表明，Alg@CLDH@Illite复合材料能够在短时间内(50 min)吸附二元染料混合物中的阴离子和阳离子染料，具有较高的吸附能力。

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来源期刊

Materials Research Innovations 工程技术-材料科学：综合

CiteScore

5.20

自引率

0.00%

发文量

审稿时长

2.8 months

期刊介绍： Materials Research Innovations covers all areas of materials research with a particular interest in synthesis, processing, and properties from the nanoscale to the microscale to the bulk. Coverage includes all classes of material – ceramics, metals, and polymers; semiconductors and other functional materials; organic and inorganic materials – alone or in combination as composites. Innovation in composition and processing to impart special properties to bulk materials and coatings, and for innovative applications in technology, represents a strong focus. The journal attempts to balance enduring themes of science and engineering with the innovation provided by such areas of research activity.