Removal of methyl orange from aqueous solutions through adsorption by calcium aluminate hydrates

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:426

Article

Zhang, Ping^1,2  Wang, Tianqi¹  Qian, Guangren²  Wu, Daishe¹  Frost, Ray L.³ 

[1] Nanchang Univ, Sch Environm & Chem Engn, Minist Educ, Key Lab Poyang Lake Environm & Resource Utilizat, Nanchang 330047, Peoples R China

[2] Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200072, Peoples R China

[3] Queensland Univ Technol, Fac Sci & Technol, Chem Discipline, Brisbane, Qld 4001, Australia

关键词: Methyl orange (MO);    Tricalcium aluminate (C(3)A);    Hydrates;    Intercalation;    Adsorption;   

DOI  :  10.1016/j.jcis.2014.03.060

来源: Elsevier

【 摘 要 】

Methyl orange (MO) is a kind of anionic dye and widely used in industry. In this study, tricalcium aluminate hydrates (Ca-Al-LDHs) are used as an adsorbent to remove methyl orange (MO) from aqueous solutions. The resulting products were studied by X-ray diffraction (XRD), infrared spectroscopy (MIR), thermal analysis (TG-DTA) and scanning electron microscope (SEM). The XRD results indicated that the MO molecules were successfully intercalated into the tricalcium aluminate hydrates, with the basal spacing of Ca-Al-LDH expanding to 2.48 nm. The MIR spectrum for CaAl-MO-LDH shows obvious bands assigned to the N=N, N=H stretching vibrations and S=O, SO3- group respectively, which are considered as marks to assess MO- ion intercalation into the interlayers of LDH. The overall morphology of CaAl-MO-LDH displayed a honey-comb like structure, with the adjacent layers expanded. (C) 2014 Elsevier Inc. All rights reserved.

【 授权许可】

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