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Application of ferric chloride for arsenic removal in the integrated process: coagulation/microfiltration
Abstract
The study presents results of using iron coagulation integrated with microfiltration to remove arsenic from water. Tested samples of natural groundwater contained approximately 32 μg/L of arsenic, 0.13 mg/L of iron and 0.085 mg/L of manganese. As a coagulant the aqueous solution of ferric chloride was dosed in portions from 1.0 to 10.5 mg/L. In the research microfiltration membranes with 400 kDa MWCO were used. Tests indicated that even at low iron coagulant doses (1.5 mg/L) reduction of arsenic concentration below acceptable level for drinking water (10 μg/L) was obtained and arsenic retention factor reached 74%. Increasing dosage of coagulant resulted in further improvement on the arsenic removal. Additionally iron concentration in the permeate was in trace amounts over the entire dose range. Reduction of such parameters as color, UV absorbance and permanganate value was also obtained. However method was inefficient in removing manganese from groundwater.
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Details
- Category:
- Monographic publication
- Type:
- rozdział, artykuł w książce - dziele zbiorowym /podręczniku w języku o zasięgu międzynarodowym
- Title of issue:
- W : Membranes and Membrane Processes in Environmental Protection strony 131 - 141
- Language:
- English
- Publication year:
- 2014
- Bibliographic description:
- Bray R., Fitobór K.: Application of ferric chloride for arsenic removal in the integrated process: coagulation/microfiltration// W : Membranes and Membrane Processes in Environmental Protection/ ed. Michał Bodzek, Jacek Pelczar Warsaw, Gliwice: Environmental Engineering Committee Polish Academy of Sciences, 2014, s.131-141
- Verified by:
- Gdańsk University of Technology
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