Removal of inorganic As [sup] 5+ from a small drinking water system
Povzetek
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.
Ključne besede
drinking water;arsenic;activated alumina;goethite;adsorption;
Podatki
| Jezik: | Angleški jezik |
|---|---|
| Leto izida: | 2009 |
| Tipologija: | 1.01 - Izvirni znanstveni članek |
| Organizacija: | UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo |
| UDK: | 628.1.033:546.73-188+541.183 |
| COBISS: |
12950550
|
| ISSN: | 0352-5139 |
| Št. ogledov: | 1437 |
| Št. prenosov: | 33 |
| Ocena: | 0 (0 glasov) |
| Metapodatki: |
|
Ostali podatki
| Sekundarni naslov: | Removal of inorganic As5+ from a small drinking water system |
|---|---|
| URN: | URN:SI:UM: |
| Strani: | str. 85-92 |
| Letnik: | ǂVol. ǂ74 |
| Zvezek: | ǂno. ǂ1 |
| Čas izdaje: | 2009 |
| Ključne besede (UDK): | 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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