20.500.12556/DKUM-27353 Removal of inorganic As [sup] 5+ from a small drinking water system Removal of inorganic As5+ from a small drinking water system 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. drinking water arsenic activated alumina goethite adsorption true false false Angleški jezik Srbski jezik Neznano 2012-06-01 10:45:36 2012-06-01 10:45:36 2022-04-15 03:44:09 2021-04-11 03:25:44 2009 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.1.033:546.73-188+541.183 12950550 0352-5139 URN:SI:UM:DK:1K49UI1X http://www.shd.org.rs/JSCS/Vol74/No1/09_4044_3811.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=36645 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0