Modeling of competitive ultrasonic assisted removal of the crystal violet and Aura mineO using MWCNTs functionalized by N-(3-nitrobenzylidene)-N′-trimethoxysilylpropyl-ethane-1,2-diamine: Equilibrium, kinetics and thermodynamic study
Yazarlar (1)
Prof. Dr. Majıd MONAJJEMI Islamic Azad University, Science And Research Branch, İran
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Özgün Makale
(Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale)
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| Dergi Adı | Oriental Journal of Chemistry | ||
| Dergi ISSN | 0970-020X Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | |||
| Makale Dili | İngilizce | Basım Tarihi | 01-2016 |
| Cilt / Sayı / Sayfa | 32 / 4 / 1839–1858 | DOI | 10.13005/ojc/320412 |
| Makale Linki | http://www.scopus.com/inward/record.url?eid=2-s2.0-84991711079&partnerID=MN8TOARS | ||
| Özet |
| In this study, adsorbent was synthesized by covalently anchoring N-(3-nitro-benzylidene)-N-trimethoxysilylpropyl-ethane-1, 2-diamine onto multi-walled carbon nanotubes (NBATSPED-MWCNTs). This novel material was characterized by different techniques such as XRD, SEM and FT-IR.Subsequently, it was used for the ultrasound-assisted removal of Aura mine O(AO) and Crystal violet (CV) from aqueous solutions was investigated. The dependency of removal percentages to variables such as pH, initial dyes concentration,adsorbent dosage, sonication time on the removal percentages of AO and CV were simultaneously investigated by central composite design (CCD) under response surface methodology (RSM). It was shown that the adsorption of AO and CV follows the pseudo-second-order rate equation, while the Langmuir model explains equilibrium data. Isotherms had also been used to obtain the thermodynamic parameters such as free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) of adsorption. The negative value of ΔG° indicates the feasibility and spontaneity of the adsorption process. The positive ΔH° suggests the endothermic nature of the adsorption. The positive values of ΔS |
| Anahtar Kelimeler |
| Aura mine O | Crystal violet | Multi-walled carbon nanotubes | Response surface methodology | Ultrasound-assisted dye removal |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Scopus | 4 |