Continuous-Flow Aqueous System for Heterogeneous Photocatalytic Disinfection of Gram-Negative Escherichia coli - Archive ouverte HAL Access content directly
Journal Articles Industrial and engineering chemistry research Year : 2017

Continuous-Flow Aqueous System for Heterogeneous Photocatalytic Disinfection of Gram-Negative Escherichia coli

(1) , (1) , (2) , (1)
1
2

Abstract

Within the global objective to develop a sustainable oxidative process based on heterogeneous photocatalysis, the possibility of combining solar UV irradiation and a supported semiconductor all while working in an open reactor running in continuous flow is a pertinent option. Here we investigated a heterogeneous photocatalytic disinfection process performed with a 2D-photocatalytic material implemented in an open-flow flat-plate reactor irradiated with a LED panel. Inactivation of Gram-negative Escherichia coli was attempted using different UV light flux densities and feed flow rates. Treatment capacities were calculated under steady-state conditions using a simple mass balance between inlet and outlet. For an irradiated surface of 1.5 × 10–2 m2, values ranged from 10 to 30 × 105 MPN h–1 L–1as a function of working conditions. With just a few adjustments, the model based on coupling mass transfer with phototocatalysis-driven bacterial inactivation developed previously in the case of a closed-batch cylindrical reactor was tested and extended with success.

Dates and versions

hal-01879027 , version 1 (21-09-2018)

Identifiers

Cite

Mejdi Kacem, Gael Plantard, Monica Brienza, Vincent Goetz. Continuous-Flow Aqueous System for Heterogeneous Photocatalytic Disinfection of Gram-Negative Escherichia coli. Industrial and engineering chemistry research, 2017, 56 (51), pp.15001 - 15007. ⟨10.1021/acs.iecr.7b03644⟩. ⟨hal-01879027⟩
190 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More