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Arsenic Removal of Filters by Heat Treated Mixtures of Yellow Loess and Sand in One-Dimensional Column for Real Groundwater Treatment

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It is described that the arsenic (As) removal in real groundwater by filters in one-dimensional (1D) column (30 mm diameter × 240 mm height) using mixtures of heat treated yellow loess (YL) and sand is applied with consideration of water permeability. The effluent satisfies the concentration of <10 ppb drinking water regulation before As saturation with filters. Heat treated mixture of YL and sand under 4% H2/96% Ar condition result in higher As removal capacity than heat treated one under air atmosphere condition at 500 °C for 3 hours. It is due to more evolution of Fe3O4 phase in the mixture. In order to increase As removal efficiency significantly, α-Fe2O3 coated filters on mixture of YL and sand by hydrothermal treatment at 100 °C for 12 hours are utilized. It leads to highly enhanced As removal efficiency with little Fe ions leaching but half reduction of effluent rate, appealing as an alternative of practical As removal filters.
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Keywords: 1D Column; Arsenic (As); Drinking Water; Sand; Yellow Loess (YL); α-Fe2O3 Coating

Document Type: Research Article

Affiliations: 1: Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea 2: Quality Management Team, Korea Institute of Energy Research (KIER), 152 Gajeongro, Yuseong-gu, Daejeon 34129, Republic of Korea 3: Department of Biological Engineering, College of Engineering, Inha University Incheon 22212, Republic of Korea

Publication date: February 1, 2018

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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