Kinetic, Isotherm and Thermodynamic Studies for Removal of Methylene Blue Using β-Cyclodextrin/Activated Carbon Aerogels

Journal Article · Wed Aug 15 04:00:00 EDT 2018 · Journal of Polymers and the Environment

DOI:https://doi.org/10.1007/S10924-018-1219-2· OSTI ID:22788009

Zhou, Kaixuan; Li, Yanhui ^[1]; Li, Qi; Du, Qiuju ^[2]; Wang, Dechang ^[1]; Sui, Kunyan ^[2]; Wang, Cuiping ^[1]; Li, Hongliang; Xia, Yanzhi ^[2]

---

1. Qingdao University, College of Mechanical and Electrical Engineering (China)
2. Qingdao University, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory (China)

A novel aerogel (β-CD/AC) was prepared through polymerization reaction of β-cyclodextrin (β-CD) with activated carbon (AC) and vacuum freeze drying method. The structure and morphology of β-CD/AC were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, Brunauer–Emmett–Teller (BET) method and thermogravimetric analysis (TGA). β-CD/AC is used to deal with wastewater containing methylene blue (MB) dye. The effects of AC content in β-CD/AC, pH value, temperature, contact time and amount of adsorbent on the adsorption of MB were studied in detail. The Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms. The Langmuir monolayer adsorption capacity of MB onto β-CD/AC was estimated as 166.67 mg/g. The kinetics of MB onto β-CD/AC was well described by the pseudo-second order model. The thermodynamic parameters indicated that the adsorption reaction of MB onto β-CD/AC was endothermic and spontaneous.

• OSTI ID: 22788009
• Journal Information: Journal of Polymers and the Environment, Journal Name: Journal of Polymers and the Environment Journal Issue: 8 Vol. 26; ISSN 1566-2543
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACTIVATED CARBON
ADSORPTION
FOURIER TRANSFORM SPECTROMETERS
GELS
ISOTHERMS
KINETICS
LYOPHILIZATION
METHYLENE BLUE
MORPHOLOGY
OLIGOSACCHARIDES
PH VALUE
SCANNING ELECTRON MICROSCOPY
TEMPERATURE DEPENDENCE
THERMAL GRAVIMETRIC ANALYSIS
THERMODYNAMICS
WASTE WATER