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.
Authors
Additional information
- Category
- Publikacja monograficzna
- Type
- rozdział, artykuł w książce - dziele zbiorowym /podręczniku w języku o zasięgu międzynarodowym
- Language
- angielski
- Publication year
- 2014
