Atrazine removal in aqueous solutions using activated carbon from peach stone

  • Ana Paula Staben Pruchniak Departamento de Química. Setor de Ciências Exatas e de Tecnologia. Universidade Estadual do Centro Oeste (UNICENTRO), Alameda Élio Antonio Dalla Vecchia, n° 838, CEP: 85040-167, Guarapuava, PR, Brazil.
  • Graziella dos Santos Portes Silva Departamento de Química. Setor de Ciências Exatas e de Tecnologia. Universidade Estadual do Centro Oeste (UNICENTRO), Alameda Élio Antonio Dalla Vecchia, n° 838, CEP: 85040-167, Guarapuava, PR, Brazil.
  • Liliane Schier de Lima Departamento de Química. Setor de Ciências Exatas e de Tecnologia. Universidade Estadual do Centro Oeste (UNICENTRO), Alameda Élio Antonio Dalla Vecchia, n° 838, CEP: 85040-167, Guarapuava, PR, Brazil.
  • Sueli Pércio Quináia Departamento de Química. Setor de Ciências Exatas e de Tecnologia. Universidade Estadual do Centro Oeste (UNICENTRO), Alameda Élio Antonio Dalla Vecchia, n° 838, CEP: 85040-167, Guarapuava, PR, Brazil.
Keywords: adsorption, biomass, pesticide, water treatment

Abstract

 

Activated carbon is commonly used as a material for contaminant-adsorption processes in aqueous systems. However, its use is more restricted to charcoal than to coal, for the most part, in view of the fact of the higher cost (~ 40%) if the mineral is a fossil fuel which needs to be extracted from the earth by mining. For this reason, the peach stone that comes from alimentary industrial tailings can be a good choice for the separation of pollutants from aqueous suspensions and other soluble substances. The purpose of this research was the development of a low-cost filter, using stones to remove atrazine from water. Appraisal and characterization studies were performed along with batch experiments to investigate dosing effects of the activated carbon, atrazine concentration, contact time, and adsorption pH on removal procedures. From the results of the experiment, an excellent removal of the analyte in question was observed under conditions that can be considered as close as possible to the environment, such as pH = 6.5, room temperature and 10 minutes of agitation time, always choosing the best alternative with the lowest cost of energy and time. Batch system application has been recommended as versatile for utilization in seasonal problems such as pesticide contamination.


Author Biographies

Ana Paula Staben Pruchniak, Departamento de Química. Setor de Ciências Exatas e de Tecnologia. Universidade Estadual do Centro Oeste (UNICENTRO), Alameda Élio Antonio Dalla Vecchia, n° 838, CEP: 85040-167, Guarapuava, PR, Brazil.
      
Graziella dos Santos Portes Silva, Departamento de Química. Setor de Ciências Exatas e de Tecnologia. Universidade Estadual do Centro Oeste (UNICENTRO), Alameda Élio Antonio Dalla Vecchia, n° 838, CEP: 85040-167, Guarapuava, PR, Brazil.
    
Liliane Schier de Lima, Departamento de Química. Setor de Ciências Exatas e de Tecnologia. Universidade Estadual do Centro Oeste (UNICENTRO), Alameda Élio Antonio Dalla Vecchia, n° 838, CEP: 85040-167, Guarapuava, PR, Brazil.
   
Sueli Pércio Quináia, Departamento de Química. Setor de Ciências Exatas e de Tecnologia. Universidade Estadual do Centro Oeste (UNICENTRO), Alameda Élio Antonio Dalla Vecchia, n° 838, CEP: 85040-167, Guarapuava, PR, Brazil.
  
Published
15/05/2020
Section
Papers