Biosorption of uranium by chemically modified Rhodotorula glutinis

Amidoxime functionalized Trametes trogii pellets for removal of uranium(VI) from aqueous medium

“…The biosorption capacities of the native and amidoxime modified fungal pellets for U(VI) ions were compared with the previous studies [5,[37][38][39][40][41][42] (Table 1). The sorption capacity of the amidoxime modified biosorbent was calculated to be 447.4 mg U(VI) g -1 dry biomass, which is comparable and is higher than many other adsorbents and biosorbents.…”

Biogeochemistry of uranium in the soil-plant and water-plant systems in an old uranium mine

“…The upper continental crust averages estimated by several authors range from 1.55 to 2.8 mg U kg − 1 (Gao et al, 1998;Hu and Gao, 2008;Taylor, 1964;Taylor and McLennan, 1995), whereas the U concentrations in uncontaminated soils worldwide vary between 1.9-4.4 mg kg − 1 (Kabata-Pendias, 2011) and the mean world concentration estimated by Reimann and Caritat (1998) is 2.7 mg kg − 1 . However, excessive amounts of uranium have been released into the environment through the activities associated with the nuclear industry (e.g., Bai et al, 2010;Benedict et al, 1981) and many other anthropogenic sources, such as mining and milling operations, disposal and discharge of industrial waste and effluent, disposal of medical waste, military applications, and the use of phosphate fertilizer in agricultural land (e.g., Campbell et al, 2015;Handley-Sidhu et al, 2010;Kratz and Schnug, 2006;Merkel, 2006;Schnug et al, 2005).…”

“…Uranium is a threatening radionuclide because of its radioactivity and high heavy metal toxicity (e.g., Antunes et al, 2007;Bai et al, 2010;Bhainsa and D'Souza, 2001;Hu et al, 1996), posing a risk to health when incorporated especially in aqueous forms (e.g., Bhalara et al, 2014;Schöner et al, 2009). Uranium disposed into the environment can reach the top of the food chain and be ingested by humans (e.g., Anke et al, 2009;Craft et al, 2004;Neves et al, 2008Neves et al, , 2012Xie et al, 2008), causing health disorders such as kidney or liver diseases and even death (e.g., Craft et al, 2004;Xie et al, 2008).…”

Thermally modified molybdenum oxide as a potential sorbent for the removal of metal cations from aqueous solutions

“…5 whereas in Table 2 literature data concerning the sorption capacity of several sorbents (for the same metals and under similar experimental conditions) are presented for comparison [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63]. Taking into consideration the literature data and the findings of this study one can conclude that the investigated MoO 3 can be used for sorption of Ba, Cs and Eu from aqueous solutions as well as is an excellent sorbent for removal of Pb and U.…”