| Title: | Removal of inorganic As [sup] 5+ from a small drinking water system |
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| Authors: | ID Simonič, Marjana (Author) |
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| Files: |  http://www.shd.org.rs/JSCS/Vol74/No1/09_4044_3811.pdf
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | The drinking water from a small drinking water system contained arsenic in a concentration of about 50 ▫$mu$▫g/L. Chemical analyses showed that the pentavalent form of arsenic was present. Since the MCL value is 10 ▫$mu$▫g/L, it was necessary to implement a technological treatment to make the water suitable for drinking. In order to do so, two technologies were suggested: activated alumina and ▫$alpha$▫-FeOOH (TehnoArz, TA) adsorption media. Experiments using both adsorption media were performed on a laboratory scale. It was possible to remove arsenic to below 1 ▫$mu$▫g/L. The maximal adsorption capacity was found to be 12.7 mg of As5+ per gram of ▫$alpha$▫-FeOOH. Moreover, all the important physico- chemical parameters of the water remained practically unchanged after the treatment. Only a slight release of iron from the media was observed. The Fe-As bond was studied by means of chemical analysis and X-ray powder diffraction. Finally, in addition to showing the capability of arsenic removalby ▫$alpha$▫-FeOOH, a comprehensive optimization of the technological parameters of the selected technology is provided. |
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| Keywords: | drinking water, arsenic, activated alumina, goethite, adsorption |
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| Year of publishing: | 2009 |
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| PID: | 20.500.12556/DKUM-27353  |
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| UDC: | 628.1.033:546.73-188+541.183 |
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| ISSN on article: | 0352-5139 |
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| COBISS.SI-ID: | 12950550 |
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| NUK URN: | URN:SI:UM:DK:1K49UI1X |
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| Publication date in DKUM: | 01.06.2012 |
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| Views: | 2118 |
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| Downloads: | 44 |
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| Metadata: |    |
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| Categories: | Misc.
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