Oxalic acid removal from wastewater using multi-walled carbon nanotubes: Kinetic and equilibrium analysis
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, cilt.38, sa.1, ss.65-69, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 38 Sayı: 1
- Basım Tarihi: 2017
- Doi Numarası: 10.1080/01932691.2016.1141688
- Dergi Adı: JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.65-69
- Anahtar Kelimeler: Adsorption, carboxylic acids, multi-walled carbon nanotubes (MWCNT), HEAVY-METAL IONS, ADSORPTION, SORPTION, MODEL
- İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır
Özet
Oxalic acid adsorption from aqueous solution is studied in this work. Multi-walled carbon nanotubes (MWCNT) were used as an adsorbent. The investigated adsorption variables are equilibrium time, initial acid concentration, and temperature. The experimental results were presented using equilibrium isotherm and kinetic models. The used equilibrium models are Langmuir, Freundlich, and Temkin adsorption isotherms. And the kinetic models are Elovich, Lagergren pseudo-first-order and pseudo-second-order kinetic models. The thermodynamics studies were carried out at three different temperatures: 278, 298, and 318K. Langmuir isotherm was the best fitted equilibrium model for the experimental data. The all applied kinetic models fitted the data suitably.