Atrazine removal in aqueous solutions using activated carbon from peach stone

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 th...

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Published inRevista ambiente & água Vol. 15; no. 3; pp. 1 - 11
Main Authors Pruchniak, Ana Paula Staben, Silva, Graziella dos Santos Portes, de Lima, Liliane Schier, Quináia, Sueli Pércio
Format Journal Article
LanguageEnglish
Published Taubaté Instituto de Pesquisas Ambientais em Bacias Hidrográficas 01.09.2020
Subjects
Activated carbon
Adsorbents
Adsorption
Aqueous solutions
Atrazine
Carbon
Charcoal
Contaminants
Contamination
Drinking water
Fossil fuels
Herbicides
Mine tailings
Pesticides
pH effects
Pollutants
Removal
Room temperature
Stone
Water purification
Water treatment
Brazil
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Summary: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.
ISSN:1980-993X
DOI:10.4136/1980-993X