Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Removal of Arsenic from Water with Non-Thermal Plasma (NTP), Coagulation and Membrane Filtration
Arsenic in drinking water resources and, especially, in groundwater, represents a severe health problem for millions of people in affected regions. This paper investigates a removal technology combining non-thermal plasma at a reaction time of 30 min, which has improved the downstream coagulation and the filtration efficiency. The results show removal rates of total arsenic over 98%. In addition, WHO limits of less than 10 μ g L − 1 could be achieved in both batch and continuous set-ups. A difference in effective over potential of the NTP reaction of 32 m V over a reaction using air as oxidant was calculated. Kinetic data of arsenic concentrations over time fitted a pseudo first-order reaction. The proposed process combination has shown to be a simple and energy-saving alternative compared to conventional oxidation and adsorption technologies by exploiting the ’enhancer’ effect of ozone and other reactive oxygen species within the NTP.
Removal of Arsenic from Water with Non-Thermal Plasma (NTP), Coagulation and Membrane Filtration
Arsenic in drinking water resources and, especially, in groundwater, represents a severe health problem for millions of people in affected regions. This paper investigates a removal technology combining non-thermal plasma at a reaction time of 30 min, which has improved the downstream coagulation and the filtration efficiency. The results show removal rates of total arsenic over 98%. In addition, WHO limits of less than 10 μ g L − 1 could be achieved in both batch and continuous set-ups. A difference in effective over potential of the NTP reaction of 32 m V over a reaction using air as oxidant was calculated. Kinetic data of arsenic concentrations over time fitted a pseudo first-order reaction. The proposed process combination has shown to be a simple and energy-saving alternative compared to conventional oxidation and adsorption technologies by exploiting the ’enhancer’ effect of ozone and other reactive oxygen species within the NTP.
Removal of Arsenic from Water with Non-Thermal Plasma (NTP), Coagulation and Membrane Filtration
Jan O. Back (Autor:in) / Werner Stadlmayr (Autor:in) / Simon Jabornig (Autor:in) / Florian Winkler (Autor:in) / Karl Winkler (Autor:in) / Marco Rupprich (Autor:in)
2018
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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