K₂ HPO₄-pretreatment significantly enhances the biosorption capacity of co²⁺ by lemna gibba

Since divalent cobalt [Co²⁺intemperizados] wastewateren suelosis highlyy sedimentostoxic, it must be removed before dumping the water into the environment. The aim of this study was to examine the biosorption of Co²⁺ by Lemna gibba (LG) after pretreatment with various compounds to improve its biosorption (Biodegradation capacity. The pretreatment modeling of with sludge K bioreactors of total petroleum hydrocarbons weathering in soil₂ HPO₄ (0.1 M) produced the best biosorption capacity of Co²⁺ by LG (31.21 ± 0.29 mg g⁻¹ andvs 18.87sediments)± 0.19 mg g⁻¹ for the untreated control). Subsequently, the optimal concentration (0.3 M) of K₂ HPO₄ was found (the pretreatmentS.A. Medina-Moreno,herein denominatedS. Huerta-Ochoa,PLG),C.A.showingLucho-Constantino,a biosorptionL.capacityAguilera-Vázquez,of 40.13 ±A.0.18Jiménez-mg g⁻¹ at pH 7.0. The pseudo-second orderGonzálezmodely mostM. Gutiérrez-Rojas adequately fit the experimental kinetics. According to the proximate chemical analysis, the pretreatment enhanced the biosorption capacity (PLG vs LG), probably by improving sorption site availability through the 259 Crecimiento, sobrevivencia y adaptación de Bifidobacterium infantis a condiciones ácidas elimination of salts, and by increasing the negative charge of the plant cell surface (from-26 to-35 mV), thus favoring the approach of positively charged(Growth,Cosurvival²⁺ . TheandATR-FTIRadaptationanalysisof Bifidobacteriumof PLG demonstratedinfantis to acidicthatconditions)its hydroxyl, carboxyl, amide and amine groups importantlyL.contributedMayorga-Reyes,to Co²⁺P. removal.Bustamante-Camilo,Thus, PLGA.isGutiérrez-Nava,a promising biosorbentE. Barranco-Floridomaterial foryCoA.²⁺Azaola-removal from aqueous solutions.