Abstract
According to WHO, 140 million peoples across the world are under the threat of arsenic poisoning. This call for technological intervention to remove arsenic from contaminated water and the availability of suitable point-of-use treatment may be a suitable option. A domestic filter was designed for removal of arsenic from water having both arsenic and iron at higher concentration. The ferro-cement filter consists of a sand-clay-rice husk candle in the upper chamber for iron removal. The second chamber houses a bed of Activated Alumina (AA) within a polypropylene container. This candle essentially functions on the principle of oxidation of iron to insoluble ferric hydroxide precipitates and their removal by the candle. Ferric hydroxide has a keen affinity towards both trivalent and pentavalent arsenic. Therefore, the candle is observed to remove significant arsenic along with iron. The activated alumina bed subsequently acts as a polishing unit to remove further residual arsenic.
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Acknowledgement
The authors are thankful to United Nation International Children’s Emergency Fund (UNICEF), Kolkata, India for financial support.
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Koner, S., Gupta, A. (2020). Enhanced Removal of Arsenic Through a Low Cost Domestic Filter Designed by Innovative Technology. In: Dawn, S., Balas, V., Esposito, A., Gope, S. (eds) Intelligent Techniques and Applications in Science and Technology. ICIMSAT 2019. Learning and Analytics in Intelligent Systems, vol 12. Springer, Cham. https://doi.org/10.1007/978-3-030-42363-6_41
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DOI: https://doi.org/10.1007/978-3-030-42363-6_41
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