Development of an iron-amended biofilter for removal of arsenic from rural Canadian prairie potable water


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Gottinger A. M. , Wild D. J. , McMartin D., Moldovan B., Wang D.

10th International Conference on Modelling, Monitoring and Management of Water Pollution, Bucharest, Romanya, 9 - 11 Haziran 2010, cilt.135, ss.333-335 identifier identifier

  • Cilt numarası: 135
  • Doi Numarası: 10.2495/wp100291
  • Basıldığı Şehir: Bucharest
  • Basıldığı Ülke: Romanya
  • Sayfa Sayıları: ss.333-335

Özet

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 mu g/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