Use of Biochar Prepared from the Açaí Seed as Adsorbent for the Uptake of Catechol from Synthetic Effluents
Uendel dos Santos Feitoza,
Pascal S. Thue,
Eder C. Lima,
Glaydson S. dos Reis,
Navid Rabiee,
Wagner S. de Alencar,
Beatris L. Mello,
Younes Dehmani,
Jörg Rinklebe,
Silvio L. P. Dias
Affiliations
Uendel dos Santos Feitoza
Institute of Exact Sciences, Federal University of the South and Southeast of Pará (UNIFESPA), Marabá 68570-590, PA, Brazil
Pascal S. Thue
Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, RS, Brazil
Eder C. Lima
Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, RS, Brazil
Glaydson S. dos Reis
Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, 245, 901 83 Umeå, Sweden
Navid Rabiee
School of Engineering, Macquarie University, Sydney, NSW 2109, Australia
Wagner S. de Alencar
Institute of Exact Sciences, Federal University of the South and Southeast of Pará (UNIFESPA), Marabá 68570-590, PA, Brazil
Beatris L. Mello
Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, RS, Brazil
Younes Dehmani
Laboratory of Chemistry and Biology Applied to the Environment, Faculty of Sciences of Meknes, Moulay Ismail University, Meknes 50070, Morocco
Jörg Rinklebe
School of Architecture and Civil Engineering, Institute of Foundation Engineering, University of Wuppertal, Water- and Waste-Management, Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany
Silvio L. P. Dias
Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, RS, Brazil
This work proposes a facile methodology for producing porous biochar material (ABC) from açaí kernel residue, produced by chemical impregnation with ZnCl2 (1:1) and pyrolysis at 650.0 °C. The characterization was achieved using several techniques, and the biochar material was employed as an adsorbent to remove catechol. The results show that ABC carbon has hydrophilic properties. The specific surface area and total pore volume are 1315 m2·g−1 and 0.7038 cm3·g−1, respectively. FTIR revealed the presence of oxygenated groups, which can influence catechol adsorption. The TGA/DTG indicated that the sample is thermally stable even at 580 °C. Adsorption studies showed that equilibrium was achieved in Qmax is 339.5 mg·g−1 (40 °C) with 98.36% removal of simulated effluent, showing that açaí kernel is excellent biomass to prepare good biochar that can be efficiently used to treat real industrial effluents.
