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Pretreatment Affects Activated Carbon from Piassava.

Jonnys Paz Castro1,2,3, João Rodrigo C Nobre3, Alfredo Napoli4

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|July 8, 2020
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Summary

Pretreating piassava palm residues, like those from Leopoldinia piassaba, enhances activated carbon (AC) properties. Extraction pretreatment proved more effective than corona discharge for creating superior AC adsorbents.

Keywords:
AmazonAttalea funiferaBahiaLeopoldinia piassabaagricultural residuescorona dischargeelectrical dischargepiassava

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Area of Science:

  • Materials Science
  • Environmental Chemistry
  • Chemical Engineering

Background:

  • Activated carbon (AC) is a valuable adsorbent derived from various carbonaceous materials.
  • Piassava palms (Leopoldinia piassaba and Attalea funifera) are abundant sources of lignocellulosic residues.
  • Residue pretreatment can significantly influence the characteristics and performance of derived activated carbon.

Purpose of the Study:

  • To investigate the impact of different pretreatment methods (corona electrical discharge and extraction) on activated carbon derived from piassava palm residues.
  • To evaluate the adsorption efficacy of the prepared activated carbon for methylene blue and phenol.
  • To compare the performance of activated carbon derived from L. piassaba versus A. funifera.

Main Methods:

  • Piassava palm residues were subjected to corona electrical discharge and solvent extraction pretreatments.
  • Activated carbon was produced from pretreated residues.
  • Characterization involved elemental analysis and Fourier-transform infrared spectroscopy (FTIR).
  • Adsorbent efficacy was tested using methylene blue and phenol adsorption.

Main Results:

  • All produced activated carbon samples exhibited good adsorbent properties.
  • Extraction pretreatment resulted in superior activated carbon functionality compared to corona electrical discharge pretreatment.
  • Activated carbon derived from L. piassaba showed better performance than that from A. funifera, attributed to higher lignin content.

Conclusions:

  • Pretreatment of piassava residues is crucial for optimizing activated carbon properties.
  • Extraction is a more effective pretreatment method than corona discharge for enhancing AC performance.
  • L. piassaba is a promising precursor for producing high-performance activated carbon due to its lignin composition.