Removal of Arsenic from Water with Non-Thermal Plasma (NTP), Coagulation and Membrane Filtration
| Autor: | Werner Stadlmayr, Florian Winkler, Jan O. Back, Simon Jabornig, Marco Rupprich, Karl Winkler |
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| Rok vydání: | 2018 |
| Předmět: |
lcsh:Hydraulic engineering
Ozone non-thermal plasma Geography Planning and Development Inorganic chemistry Ultrafiltration chemistry.chemical_element membrane filtration 02 engineering and technology Aquatic Science Nonthermal plasma 010402 general chemistry 01 natural sciences Biochemistry law.invention chemistry.chemical_compound lcsh:Water supply for domestic and industrial purposes Adsorption lcsh:TC1-978 law arsenic removal groundwater Coagulation (water treatment) coagulation Filtration Arsenic Water Science and Technology lcsh:TD201-500 021001 nanoscience & nanotechnology 0104 chemical sciences Arsenic contamination of groundwater chemistry ultrafiltration 0210 nano-technology |
| Zdroj: | Water Volume 10 Issue 10 Water, Vol 10, Iss 10, p 1385 (2018) |
| ISSN: | 2073-4441 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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