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Normal boundary intersection applied as multivariate and multiobjective optimization in the treatment of amoxicillin synthetic solution

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Abstract

Amoxicillin is a useful antibiotic to combat bacterial infections. However, this drug can cause serious problems when discarded in waterways due to its great bioaccumulation potential. This compound can be treated via advanced oxidation processes (AOPs), which are capable of converting amoxicillin into carbon dioxide and water. In this context, the use of ozone as an oxidizer has excelled in amoxicillin degradation. This paper aims at treating a synthetic solution of amoxicillin (0.1 g L−1) in a reactor with ozone bubbling. A Design of Experiment (DoE) with a response surface known as Central Composite Design (CCD) was used to optimize the treatment process. In addition, a Normal Boundary Intersection (NBI) method was used in the construction of a Pareto boundary chart. Results after 1-h treatment showed a reduction of 53% of the initial organic matter from a designed model using factors, such as pH, ozone generator power, and O3 flow. A model was built from the CCD with score of 0.9929. Thus, the model was able to represent the real scenario with confidence.

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Correspondence to Fabiano Luiz Naves.

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Moura, D., Barcelos, V., Samanamud, G.R.L. et al. Normal boundary intersection applied as multivariate and multiobjective optimization in the treatment of amoxicillin synthetic solution. Environ Monit Assess 190, 140 (2018). https://doi.org/10.1007/s10661-018-6523-8

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  • DOI: https://doi.org/10.1007/s10661-018-6523-8

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