Comparison of Adsorption Capability of Alginate Beads with Alginate Composite Beads for the Removal of Malachite Green Dye from Aqueous Solution

EasyChair Preprint 6226

Abstract

The present work investigates comparative dye [malachite green (MG)] adsorption efficiency of alginate beads (A0) and prepared composite materials of alginate [i.e., Alginate-bentonite (AB), activated carbon-alginate beads (AC), and activated carbon-bentonite-alginate beads (ABC)] from aqueous solution. Results revealed that among all the composite materials under investigation alginate-bentonite (AB) beads have maximum adsorption capacity (i.e., 69.90 mg/g) compared to others at 30°C and neutral pH. Further, all the prepared composites were characterized by conducting SEM (Scanning Electron Microscopy), FTIR (Fourier transform infrared spectroscopy) and fluorescence imaging before and after adsorption. The images obtained from SEM and fluorescence microscopy confirmed the dye adsorption by all the composite materials. The equilibrium adsorption data was fitted well to Langmuir adsorption isotherm models which confirm the monolayer adsorption behavior of dye molecules onto the surface of all the adsorbents under study. Kinetic studies revealed that dye adsorption on A0, AC, AB and ABC composite followed pseudo-second order kinetic model

Keyphrases: Adsorption, Alginate, Bentonite

@booklet{EasyChair:6226,
  author    = {Sachin Vaidh and Priya Vaidya and Upma Vaid and Gajendra Singh Vishwakarma},
  title     = {Comparison of Adsorption Capability of Alginate Beads with Alginate Composite Beads for the Removal of Malachite Green Dye from Aqueous Solution},
  howpublished = {EasyChair Preprint 6226},
  year      = {EasyChair, 2021}}