Decomposition of Atrazine Traces in Water by Plasma Discharge

Decomposition of Atrazine Traces in Water by Plasma Discharge

Abstrakt

Plasma discharge is a promising technique for micropollutant decomposition, since it produces a wide spectrum of highly reactive species near the water surface. In this research, two DBD reactors with a water electrode were investigated on energy yield of H2O2 production, ozone production and atrazine decomposition, in comparison to a reference reactor based on diaphragm discharge. Energy yield of atrazine decomposition is two orders of magnitude higher in the DBD reactors. They can be further optimized by adding a membrane or active carbon textile with high surface area underneath the water surface. Adsorption of the micropollutant on such membrane or textile leads to higher decomposition rate at the plasma-liquid interface, without changing the input power. The synergetic combination of liquid plasma with nanofiber membrane or carbon cloth is a convenient water treatment technology, which can easily be scaled up to industrial level.

Plasma discharge is a promising technique for micropollutant decomposition, since it produces a wide spectrum of highly reactive species near the water surface. In this research, two DBD reactors with a water electrode were investigated on energy yield of H2O2 production, ozone production and atrazine decomposition, in comparison to a reference reactor based on diaphragm discharge. Energy yield of atrazine decomposition is two orders of magnitude higher in the DBD reactors. They can be further optimized by adding a membrane or active carbon textile with high surface area underneath the water surface. Adsorption of the micropollutant on such membrane or textile leads to higher decomposition rate at the plasma-liquid interface, without changing the input power. The synergetic combination of liquid plasma with nanofiber membrane or carbon cloth is a convenient water treatment technology, which can easily be scaled up to industrial level.

discharge with liquid, atrazine, decomposition

discharge with liquid, atrazine, decomposition

VANRAES, P.; NIKIFOROV, A.; VYHNÁNKOVÁ, E.; ŠUBRT, M.; KRČMA, F.; VÁVROVÁ, M.; SURMONT, P.; LYNEN, F.; DAELS, N.; DE CLERK, K.; VAN HULLE, S.; VANDAMME, J.; VAN DURME, J.; LEYS, C.

21.09.2014

Greifswald

HAKONE XIV - Book of Abstracts

96

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