Advanced sustainable carbon material from babassu biomass and its adsorption performance

Paloma Nayra da Silva Lima, Anupama Ghosh, Ariane Nascimento, Laís Helena Sousa Vieira, Rubens Silva Costa, Odair Pastor Ferreira, Guilherme J.P. Abreu, Kazunori Fujisawa, Edson Cavalcanti Silva-Filho, Antônio Gomes de Souza Filho, Anderson Oliveira Lobo, Mauricio Terrones, Bartolomeu Cruz Viana

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Activated carbon (AC) wasprepared from babassu mesocarp, an abundant biomass inBrazil. Thermal pretreatments, including hydrothermal carbonization and pyrolysis at different temperatures were applied along with potassium hydroxide activation, in synthesizing ACs with varying structure, electronic and surface properties. A thorough characterization of the ACs revealed their low structural order and high specific surface area, containing micropores and mesopores. Furthermore, negatively charged surface oxygen functional groups make them potential candidates as adsorbents for cationic chemical species. A detailed study of adsorption of methylene blue cationic dye was carried out by varying time, initial concentration, pH and ionic strength of the dye solution, which showed that the chief driving force of this adsorption is the Coulombic interaction on the surface, followed by diffusion throughout the pores. These ACsshowed fast and efficient dye uptake – the best sample showedequilibrium adsorption capacity of 388 mg g−1for methylene blueand 220 mg g−1 for another cationic dye crystal violetduring 6 h –and thereby can be used as renewable and sustainable adsorbents.

Original languageEnglish (US)
Article number111188
JournalJournal of Physics and Chemistry of Solids
Volume176
DOIs
StatePublished - May 2023

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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