Factors that influence the ozonation process of water in bubble columns

Authors

  • Mayra Bataller Centro Nacional de Investigaciones Científicas
  • Tito Díaz Instituto Superior Politécnico "José A. Echeverría"
  • Eliet Véliz Centro Nacional de Investigaciones Científicas
  • Lilia Asela Fernández Centro Nacional de Investigaciones Científicas
  • Caridad Alvarez Centro Nacional de Investigaciones Científicas

Abstract

The water treatment based on ozono employment every time receives a more international application, because of its excellent properties as germicide and oxidant. Bubble reactors have an extensive application, especially, bubble column. This paper presents the results on an experimental study in a bubble column 0.2 m diameter and 4 m height and under operating conditions similar to those installed in ozone water treatment systems in service in Cuba. The objective of this study was to obtain statistical models with independent variables for evaluating the effects of parameters such as: liquid flow rate (1-3 m3/h), gas flow rate (0,18-0,36 m3/h) and initial ozone concentration in the feed gas (12-18 g/m3). The volumetric gas liquid mass transfer coefficient and the dissolved ozone concentration at the column outlet were evaluated as dependent variables. An increment of gas flow rate results in an increase of the volumetric gas-liquid mass transfer coefficient. On the other hand, the liquid flow rate does not have an appreciable influence on this coefficient at values greater than 2 m3/h in this study. The results indicate that the ozone concentration in the feed gas has no effect on the volumetric gas liquid mass transfer coefficient but on dissolved ozone concentration at the column outlet. They also indicate that the decreasing of the liquid flow rate and the increasing of the gas flow rate are convenient to increase dissolved ozone concentration at the column outlet, even at the lowest ozone concentration value in the feed gas.

Published

2022-06-01

How to Cite

Bataller, M., Díaz, T. ., Véliz, E. ., Fernández, L. A., & Alvarez, C. . (2022). Factors that influence the ozonation process of water in bubble columns. NATIONAL CENTER FOR SCIENTIFIC RESEARCH (CENIC) CHEMICAL SCIENCES JOURNAL, 32(3), 165-169. Retrieved from https://revista.cnic.cu/index.php/RevQuim/article/view/1671

Issue

Section

Research articles