Marjana Simonič (Author)

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.

Keywords

drinking water;arsenic;activated alumina;goethite;adsorption;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
UDC: 628.1.033:546.73-188+541.183
COBISS: 12950550 Link will open in a new window
ISSN: 0352-5139
Views: 1437
Downloads: 33
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Other data

Secondary title: Removal of inorganic As5+ from a small drinking water system
URN: URN:SI:UM:
Pages: str. 85-92
Volume: ǂVol. ǂ74
Issue: ǂno. ǂ1
Chronology: 2009
Keywords (UDC): applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;public health engineering;water;sanitation;illuminating engineering;sanitarna tehnika;zdravstvena tehnika;voda;sanitarne naprave;svetlobna tehnika;water supply;water treatment;water consumption;oskrba z vodo;priprava vode;uporaba vode;mathematics;natural sciences;naravoslovne vede;matematika;chemistry;crystallography;mineralogy;kemija;inorganic chemistry;anorganska kemija;mathematics;natural sciences;naravoslovne vede;matematika;chemistry;crystallography;mineralogy;kemija;
DOI: 10.2298/JSC0901085S
ID: 1437614
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