| Download | - View accepted manuscript: Development of an iron amended biofilter for removal of arsenic from rural Canadian prairie potable water (PDF, 327 KiB)
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| Author | Search for: Gottinger, A. M.; Search for: Wild, D. J.; Search for: McMartin, D.; Search for: Moldovan, B.; Search for: Wang, D. L.1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Conference | Water Pollution 2010: Tenth International Conference on Modelling, Monitoring and Management of Water Pollution: 09 June 2010, Bucharest, Romania |
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| Subject | arsenic; ZVI/sand filter; adsorption isotherm; slow sand filtration; Water mains |
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| Abstract | The current study examined the use of a ZVI (zero valent iron)/sand filter for the removal of arsenic (As) from Canadian Prairie ground water sources. Batch isotherm data indicated a favourable reaction represented by the Langmuir isotherm equation with loading capacities of 5000 and 2000 mg As/kg ZVI. Column experiments using arsenate-spiked RO water (50 µg/L) and varying volumetric ratios of ZVI to sand indicated no statistical difference in arsenic-removal performance above a ZVI/sand ratio of 20/80 (%, v/v) with removal efficiencies of greater than 98%. A second column study using two ground water sources with 50/50 and 40/60 ZVI/sand filters achieved 89 - 96% As removal. A pilot study using a 50/50 ZVI/sand filter integrated into the existing small-scale biological system showed arsenic removal efficiency of approximately 99.7%. By incorporating this ZVI/sand filter into existing biological treatment, it was capable of removing As to concentrations below 0.1 µg/L and reducing the concentrations of other contaminants, such as ammonia, iron and manganese. The overall performance of the pilot system indicates the ZVI/sand filter is a viable option for arsenic removal from drinking water for small communities (populations < 5000). |
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| Publication date | 2010-06-09 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 53267
NRC-IRC-20942 |
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| NPARC number | 20374842 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 14e17539-2e9c-4427-8966-00cacf4b33f2 |
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| Record created | 2012-07-23 |
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| Record modified | 2020-07-14 |
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