Análise do processo experimental na solubilidade do mercúrio total em processo redutivo - DOI: 10.4025/actascitechnol.v29i2.704

Raquel Dalla Costa; Célia Regina Granhen Tavares; Eneida Sala Cossich; Terezinha Aparecida Guedes

doi:10.4025/actascitechnol.v29i2.704

Factorial design analysis on the solubility of total mercury in reduction process - DOI: 10.4025/actascitechnol.v29i2.704

Authors

Raquel Dalla Costa UEM
Célia Regina Granhen Tavares UEM
Eneida Sala Cossich UEM
Terezinha Aparecida Guedes UEM

DOI:

https://doi.org/10.4025/actascitechnol.v29i2.704

Keywords:

amálgama odontológica, mercúrio total, ácido húmico, temperatura, pH, planejamento experimental

Abstract

The dental wastewater can contribute to the total daily mercury load on the environment. Factorial design of experiments is useful to analyze factors that influence this solubility. The aim of the present study was to design experiments to examine the effects of operational variables, humic acid, temperature, pH and contact time that may affect the solubility of total mercury as dental amalgam residue in reduction process. Based on the factorial design of experiments, the humic acid concentration was the most significant factor in this process, followed by other factors. The parameters affecting the solubility of total mercury showed that when the [HA], T and CT increases and pH decreases there is an important increase of total mercury concentration in process. For the tested conditions, the high total mercury concentration was obtained using the humic acid concentration = 1.0 g L^-1, temperature = 35^oC, pH = 4.0 and contact time = 10 days.

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Author Biography

Raquel Dalla Costa, UEM

Possui graduação em Engenharia Química pela Universidade Estadual do Oeste do Paraná e mestrado em Engenharia Química pela Universidade Estadual de Maringá. Doutoranda em Engenharia Química pela Universidade Estadual de Maringá. Tem experiência na área de Engenharia Química, com ênfase em Ambiental. Objetivo: Obter oportunidade de ministrar aulas em instituição de ensino Currículo Lattes

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Published

2008-02-12

How to Cite

Costa, R. D., Tavares, C. R. G., Cossich, E. S., & Guedes, T. A. (2008). Factorial design analysis on the solubility of total mercury in reduction process - DOI: 10.4025/actascitechnol.v29i2.704. Acta Scientiarum. Technology, 29(2), 173–179. https://doi.org/10.4025/actascitechnol.v29i2.704

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Issue

Vol. 29 No. 2 (2007)

Section

Chemical Engineering

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0.8

2019CiteScore

36th percentile