Uranium and neodymium biosorption using novel chelating polysaccharide

Recovery of Rare Earth Elements from Geothermal Fluids through Bacterial Cell Surface Adsorption

“…41,42 High TDS is also expected to increase surface charge, weakening the electrostatic attraction between the surface and aqueous metals and decreasing adsorption. 43−45 However, other studies have observed that changes in ionic strength do not affect REE adsorption onto surfaces including chelating polysaccharides, 46 clays, 47 and mesoporous silica. 48 It has been suggested that this REE adsorption is dominated by inner sphere complexation at high affinity sites rather than outer sphere complexation; therefore, the REEs cannot be easily displaced by low affinity ions that constitute the majority of the TDS.…”

Adsorption of Lanthanide Ions from Aqueous Solution in Multicomponent Systems using Activated Carbon from Banana Peels (Musa paradisiaca L.)

“…Lanthanides are critical materials for advanced and high technologies in many applications, particularly those in the energy, optic, electronic, chemical, automotive, defence (King et al, 2018), and nuclear power industries (Elsalamouny et al, 2017). The trivalent state of lanthanide is the most thermodynamically stable form in an aqueous solution (Elsalamouny et al, 2017).…”

“…The separation of lanthanides utilizing different methods, including solvent extraction (Wang et al, 2017); plasma separation (Gueroult et al, 2018); hydrothermal (Josso et al, 2018), alkaline, and acid extraction (King et al, 2018); adsorption (Awual et al, 2013); and biosorption (Das & Das, 2013;Fomina & Gadd, 2014;Sadovsky et al, 2016;Elsalamouny et al, 2017) has been reported. In principle, precipitation and solvent extraction methods have technical limitations for treating a contaminated aqueous solution; for example, they require some pre-treatments involving physical and chemical processes.…”

“…In principle, precipitation and solvent extraction methods have technical limitations for treating a contaminated aqueous solution; for example, they require some pre-treatments involving physical and chemical processes. Currently, adsorption method using agricultural waste as an adsorbent for the removal of metal ions has been considered as an alternative and effective method of recovering the metal ions (Das & Das, 2013;Bhatnagar et al, 2015;Elsalamouny et al, 2017;Omo-Okoro et al, 2018;). On the other hand, adsorption method with biomaterials, such as microorganisms and biomass wastes, where adsorbates are bound by the active sites of the biomaterials have also attracted wide attention (Fomina & Gadd, 2014).…”

Remoção De Níquel E Cobalto Em Meios Aquosos: Estudo Comparativo Do Processo De Biossorção/Flotação Com Rhodococcus Erythropolis E Biossorção Em Casca De Banana Modificada

“…As A biossorção é considerada como um processo espontâneo, ocorrendo assim muito rapidamente (Volesky, 2001). Estudos têm relatado que a biossorção de metais por diversos biossorventes não requer muito tempo para atingir o equilíbrio, alcançando-o nos primeiros minutos do processo onde a concentração de metal na solução diminui rapidamente nos primeiros 30 min de contanto e permanecem constante ou com menores variações da remoção de metais após esse período (Bağda et a., 2017;Elsalamouny et al, 2017;Fadel et al, 2015;Vijayaraghavan e Yun, 2008 De acordo com a maioria dos estudos de biossorção, disponíveis na literatura, a equação de pseudo-segunda ordem é o modelo que melhor se adequa para todo o intervalo de tempo de contato, enquanto que equação de pseudo-primeira ordem é geralmente aplicável ao tempo de contato inicial. (Torres et al, 2016;Mudhoo et al, 2012;Markou et al, 2015).…”