Synthesis and characterization of biochars modified with natural deep eutectic solvent (NADES) for dipyrone removal from aqueous medium

Author(s)

Guimaraes, Taciana G. S. ; Barros, Lucelia A. ; Silva, Ricardo Santos ; Gonzalez, Mario H. ; Carrilho, Elma N. V. M. ; Labuto, Georgia

• Document type: Journal article
• Source: SUSTAINABLE CHEMISTRY AND PHARMACY; v. 35, p. 18-pg., 2023-10-01.

Abstract

Dipyrone is a widely commercialized substance that has been linked to DNA damage in aquatic organisms. As with other pharmaceutical compounds found in water bodies, it is a global concern that affects water security. Adsorption is considered a viable alternative for removing pharmaceuticals from water, particularly when the adsorbents are derived from renewable sources like agro-industrial wastes. In this study, biochars were prepared from yeast waste (YWB), cork powder (CPB) and old coffee grounds (CGB), and were functionalized with a natural deep eutectic solvent (NADES) based on citric acid and sucrose, resulting in YWB-NADES, CPB-NADES, and CGBNADES. The adsorbents were characterized and used to dipyrone removal from aqueous medium. The dipyrone removal by CGB-NADES at pH 6 reached 21.92 & PLUSMN; 0.5 mg/L (89.12% & PLUSMN; 1.3) and 16.97 & PLUSMN; 0.8 mg/L (68.96% & PLUSMN; 1.9) for deionized and freshwater from a reservoir, respectively. The kinetics adsorption was described by the pseudo-second order, and different isotherm model best fit the experimental data, suggesting that both chemisorption and physisorption mechanisms govern the adsorption of dipyrone by the biochars functionalized with NADES. The synthesis of the functionalized biochars scored 96 points in the Eco Scale, indicating that these adsorbents are environmentally friendly and, in conjunction with their high adsorption capacity, are viable for dipyrone removal in water and effluent treatment. (AU)

• FAPESP's process: 22/06823-8 - Removal of geosminin and 2-methylisoborneol from water by activated carbons from biomass residues and functionalized carbon composites
• Grantee: Ricardo Santos Silva
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 21/06471-1 - Development of activated carbon and nanofunctionalized composites for the removal and passive monitoring of antineoplastic compounds in the aquatic environment
• Grantee: Taciana Guarnieri Soares Guimarães
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 21/14759-5 - Sustainable solvents and extraction techniques in green analytical chemistry for determination of emerging and inorganic contaminants in environmental samples
• Grantee: Mario Henrique Gonzalez
• Support Opportunities: Regular Research Grants
• FAPESP's process: 21/14791-6 - Removal of antibiotics from water medium by adsorbents and nanocomposites produced with biomasses waste
• Grantee: Lucelia Alcantara Barros
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 20/12263-0 - Combined use of physical-photoeletrochemical processes to remove substances which are responsible for taste and odor in drinking water
• Grantee: Christiane de Arruda Rodrigues
• Support Opportunities: Research Grants - Research Partnership for Technological Innovation - PITE
• FAPESP's process: 21/10599-3 - The Antimicrobial Resistance Institute of São Paulo (The Aries Project)
• Grantee: Arnaldo Lopes Colombo
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 20/14419-7 - Removal of drugs from water and wastewater by adsorbents and nanocomposites produced with biomasses waste
• Grantee: Geórgia Christina Labuto Araújo
• Support Opportunities: Regular Research Grants
• FAPESP's process: 22/08358-0 - Prediction and prioritization of pharmaceuticals in the states of São Paulo and Paraíba aiming at the development of monitoring and removal strategies in aqueous media (PRIOFARMA SP-PB)
• Grantee: Geórgia Christina Labuto Araújo
• Support Opportunities: Regular Research Grants