期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 152, 期 -, 页码 233-240出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2015.06.128
关键词
Adsorption; Janus Green B; Nanoparticle; Response surface methodology; Ultrasound-assisted dye removal
类别
资金
- Graduate School of the University of Yasouj
- Research Council of the University of Yasouj
The Janus Green B (JGB) adsorption onto homemade ZnO/Zn(OH)(2) nanoparticles loaded on activated carbon (AC) which characterized by FESEM and XRD analysis has been reported. Combination of response surface methodology (RSM) and central composite design (CCD) has been employed to model and optimize variables using STATISTICA 10.0 software. The influence of parameters over pH (2.0-8.0), adsorbent (0.004-0.012 g), sonication time (4-8 min) and JGB concentration (3-21 mg L-1) on JGB removal percentage was investigated and their main and interaction contribution was examined. It was revealed that 21 mg L-1 JGB, 0.012 g ZnO/Zn(OH)(2)-NP-AC at pH 7.0 and 7 min sonication time permit to achieve removal percentage more than 99%. Finally, a good agreement between experimental and predicted values after 7 min was achieved using pseudo-second-order rate equation. The Langmuir adsorption is appropriate for correlation of equilibrium data. The small amount of adsorbent (0.008-0.015 g) is applicable for successful removal of JGB (RE >99%) in short time (7 min) with high adsorption capacity (81.398.03 mg g(-1)). (C) 2015 Elsevier B.V. All rights reserved.
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