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Application of activated carbon functionalized with graphene oxide for efficient removal of COVID-19 treatment-related pharmaceuticals from water.
Januário, Eduarda Freitas Diogo; Fachina, Yasmin Jaqueline; Wernke, Gessica; Demiti, Gabriela Maria Matos; Beltran, Laiza Bergamasco; Bergamasco, Rosângela; Vieira, Angélica Marquetotti Salcedo.
  • Januário EFD; State University of Maringá, Department of Chemical Engineering, Maringá, 87020-900, Paraná, Brazil.
  • Fachina YJ; State University of Maringá, Department of Chemical Engineering, Maringá, 87020-900, Paraná, Brazil.
  • Wernke G; State University of Maringá, Department of Chemical Engineering, Maringá, 87020-900, Paraná, Brazil.
  • Demiti GMM; State University of Maringá, Department of Chemical Engineering, Maringá, 87020-900, Paraná, Brazil.
  • Beltran LB; State University of Maringá, Graduate Program in Food Science, Maringá, 87020-900, Paraná, Brazil.
  • Bergamasco R; State University of Maringá, Department of Chemical Engineering, Maringá, 87020-900, Paraná, Brazil.
  • Vieira AMS; State University of Maringá, Department of Food Engineering, Maringá, 87020-900, Paraná, Brazil. Electronic address: amsvieira@uem.br.
Chemosphere ; 289: 133213, 2022 Feb.
Article in English | MEDLINE | ID: covidwho-1561142
ABSTRACT
Currently, the COVID-19 pandemic has been increasing the consumption of some drugs, such as chloroquine (CQN) and dipyrone (DIP), which are continuously discharged into water resources through domestic sewage treatment systems. The presence of these drugs in water bodies is worrisome due to their high toxicity, which makes crucial their monitoring and removal, especially by means of advanced technologies. Given this scenario, a new adsorbent material was synthesized through the combination of babassu coconut activated carbon and graphene oxide (GAC-GO). This study was evaluated in batch adsorption processes, aiming at the treatment of water contaminated with CQN and DIP. Characterization analyzes using physicochemical and spectroscopic techniques indicated that the GAC-GO functionalization was successfully performed. The equilibrium time of the adsorption process was 18 and 12 h for CQN and DIP, respectively. Kinetic and isothermal data better fitted to pseudo-second-order and Langmuir models for both drugs. Thermodynamic parameters showed that the process is endothermic and the maximum adsorption capacities of CQN and DIP were 37.65 and 62.43 mg g-1, respectively, both at 318 K. The study of the effect of ionic strength, which simulates a real effluent, demonstrated that the synthesized adsorbent has potential application for the treatment of effluents. Furthermore, satisfactory removal rates were verified for the removal of other contaminants in both simple solutions and synthetic mixtures, evidencing the versatile profile of the adsorbent.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Water Pollutants, Chemical / Pharmaceutical Preparations / Water Purification / COVID-19 Drug Treatment / Graphite Type of study: Experimental Studies Limits: Humans Language: English Journal: Chemosphere Year: 2022 Document Type: Article Affiliation country: J.chemosphere.2021.133213

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Water Pollutants, Chemical / Pharmaceutical Preparations / Water Purification / COVID-19 Drug Treatment / Graphite Type of study: Experimental Studies Limits: Humans Language: English Journal: Chemosphere Year: 2022 Document Type: Article Affiliation country: J.chemosphere.2021.133213