Mesoporous high-surface-area activated carbon from biomass waste via microwave-assisted-H3PO4 activation for methylene blue dye adsorption: An optimized process

Ali H. Jawad*, Nurul Najwa Abd Malek, Tumirah Khadiran, Zeid A. ALOthman, Zaher Mundher Yaseen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

In this study, rubber seed pericarp (RSP) biomass wastes (specific surface area = 0.79 m2/g) were converted into mesoporous high-surface-area activated carbon (RSP-AC) (specific surface area = 1245.7 m2/g) via microwave heating process using H3PO4 as an activating agent. The optimum activation conditions were determined by using response surface methodology with Box-Behnken design (RSM-BBD). The best activation conditions for RSP-AC preparation were found to be impregnation ratio 1:2 (RSP:H3PO4), radiation power 800 W and radiation time 15 min. The effectiveness of RSP-AC material towards removal of methylene blue (MB) dye from aqueous environment was evaluated and optimized by RSM-BBD. The RSP-AC shows effective and fast removal of MB (100 mg/L) of 92 % within 10 min, and at optimum working conditions of RSP-AC dose 0.05 g, and solution pH 7.8 as confirmed by RSM-BBD. The maximum adsorption capacity of RSP-AC towards MB was found to be 347.8 mg/g at 25 ± 2 °C. This result indicates that RSP-AC is a promising activated carbon material with potential application in wastewater treatment.

Original languageEnglish
Article number109288
JournalDiamond and Related Materials
Volume128
DOIs
StatePublished - Oct 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

  • Activated carbon
  • Adsorption
  • Box-Behnken design
  • Microwave
  • Rubber seed pericarp

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Mechanical Engineering
  • General Physics and Astronomy
  • Materials Chemistry
  • Electrical and Electronic Engineering

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