Pham Hoang Giang

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Arsenic poisoning has emerged as an environmental problemfor the human health in many countries, including Vietnam. This study aims to create the adsorbent from ion-rich materials and evaluate its adsorption capacity to remove arsenic in groundwater by column study. The maximum adsorptioncapacitiesofthe adsorbents in column study, calculated by Thomas model, were in the range 20.763 – 129.105 mg/g. And the adsorbate breakthrough time of iron-rich adsorbents calculated byYoon-Nelson model, were in range 312.4 – 2857.4 minutes. Besides, the pilot scale with capacity 5 m3/day was installed at Cu Da Nursery School, Cu Khe commune, Thanh Oai district, Hanoi city where has high arsenic pollution in groundwater (250-400ppb). The pilot system showeda removals of76 % of arsenicand  85 ÷ 90 % of iron, meeting the QCVN 02: 2009/BYT (National technical regulation on drinking water quality).

Keywords: Arsenic, groundwater, adsorbent, column study.


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