Activated lignin‒chitosan extruded blends for efficient adsorption of methylene blue

Ahmad B. Albadarin, Maurice N. Collins, Mu Naushad, Saeed Shirazian, Gavin Walker, Chirangano Mangwandi

Research output: Contribution to journalArticle

341 Citations (Scopus)
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Abstract

This work investigates the production of activated lignin-chitosan extruded (ALiCE) pellets with controlled particle size distribution (almost spherical: dp ~500‒1000µm) for efficient methylene blue adsorption. The novel preparation method employed in this study successfully produced activated lignin-chitosan pellets. Structural and morphological characterizations were performed using BET, FTIR and SEM-EDX analyses. The influence of contact time, solution pH, ionic strength, initial adsorbate concentration and desorption studies was investigated. The experimental data fitted well with the Langmuir isotherm (R2 = 0.997), yielding a maximum adsorption capacity of 36.25mg/g. The kinetic data indicated that methylene blue (MB) adsorption onto ALiCE can be represented by the pseudo second-order-model with intraparticle processes initially controlling the process of MB adsorption. Overall, these results indicate that the novel ALiCE offers great potential for removing cationic organic pollutants from rivers and streams.
Original languageEnglish
JournalChemical Engineering Journal
Early online date20 Aug 2016
DOIs
Publication statusEarly online date - 20 Aug 2016

Keywords

  • Adsorption
  • Blends Extrusion
  • Chitosan
  • Lignin
  • Dyes

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