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Dye Removal from Wastewater Using Functionalized Copper Oxide–zinc Oxide Nanocomposite as an Adsorbent

Chamani, Houman | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47712 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Kariminia, Hamid Reza; Mahmoudi, Niyaz Mohammad
  7. Abstract:
  8. In this thesis, the copper oxide - zinc oxide nanocomposite was synthesized and functionalized using 3-aminopropyltrimethoxysilane. The functionalized nanocomposite was characterized using X-ray Diffraction spectroscopy (XRD), Fourier Transform Infrared (FT-IR), X-ray Fluorescence Spectroscopy (XRF), Scanning Electron Microscopy (SEM) and Brunauer–Emmett–Teller (BET). Dye removal from synthetic wastewater was done in a batch system using functionalized copper oxide - zinc oxide nanocomposite as adsorbent. Direct red 23, direct red 80 and direct red 81 were used for preparation of synthetic wastewaters. The effects of operational parameters such as adsorbent dosage, initial dye concentration, pH, additive salts, temperature and time on dye removal were investigated. Isotherms, kinetics and thermodynamics of dye adsorption were studied. Investigation of isotherms showed that dye adsorption followed Langmuir isotherm. Adsorption kinetic was found to conform to second order kinetics. The thermodynamic data showed that dye adsorption was spontaneous, endothermic and physical reaction. Furthermore, according to desorption studies, dye release was occurred to a large extent at pH=12. The results indicate that the functionalized copper oxide - zinc oxide nanocomposite can be used as a suitable adsorbent for dye removal from anionic colored wastewater
  9. Keywords:
  10. Functionalization ; Adsorption ; Bleaching ; Isotherm Adsorption ; Thermodynamics ; Kinetic Model ; Copper Oxide-Zinc Oxide Nanocomposite Synthesis

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