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Evaluation of the removal efficiency of ethylparaben by adsorption on activated carbon and on alternative adsorbents and toxicity tests with zooplanktonic freshwater organisms

Grant number: 17/20490-3
Support type:Scholarships in Brazil - Master
Effective date (Start): July 01, 2018
Effective date (End): February 29, 2020
Field of knowledge:Engineering - Sanitary Engineering
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Eny Maria Vieira
Grantee:Rodrigo Maia Valença
Home Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

The constant increase on the industrial activity along with the exponential urban growth promote a large contribution of pollutants to the water bodies. As a result of technological and analytical methods improvement, there is a concern about the group of emerging micropollutants, which are substances that occur in water at low concentrations that resist conventional wastewater treatment and that are capable of interfering negatively on affected biotic systems even at low concentrations. An example of micropollutantes are the parabens, a group of preservatives chemicals with a wide industrial usage that threaten human health due to their endocrine disruptive and carcinogenic potential. The present work aims to evaluate the removal of aqueous ethylparaben by adsorption on activated carbon and on alternative adsorbents such as chitosan and luffa cylindrica to verify by means of toxicity tests in Daphnia similis, Ceriodaphnia silvestrii and, Ceriodaphnia if the efficacy of the proposed treatment is capable of mitigating the toxic effects caused on aquatic organisms by the presence of ethylparaben in their environment. In addition, an analytical methodology will be developed and validated for the detection and quantification of ethylparaben in water samples using HPLC-DAD. (AU)