Experimental Zn(II) retention in a sandy loam soil by very small columns

Release of Ni and Zn from Contaminated Floodplain Soils Under Saturated Flow Conditions

“…Consequently, the non-equilibrium observed was related to a retarded reaction and characterised by diffusive contaminant supply. Miretzky et al (2006) also detected this dependency that is typical of In a similar study, Pang et al (2002) attributed the increase in K neq with decreasing v to non-equilibrium Zn adsorption.…”

Competitive sorption and transport of Pb2+, Ni2+, Mn2+, and Zn2+ in lateritic soil columns

“…NaOH and HNO 3 were used for pH adjustments to maintain a pH of 5. All the glassware used for dilution, storage and experiments were cleaned with non-ionic detergent, thoroughly rinsed with tap water, soaked overnight in a 10% (v/v) HNO 3 solution and finally rinsed with ultrapure quality water before use [26].…”

Reactive transport of arsenic(III) and arsenic(V) on natural hematite: Experimental and modeling

“…Dynamic systems are usually less affected by analytical errors, and they simulate field conditions better than batch experiments because: (1) a high solid/solution ratio is achieved, (2) an immobile porous medium is percolated by a given solution, and (3) reaction products do not accumulate [23]. Batch experiments are used to obtain equilibrium sorption isotherms and to evaluate the sorption capacity of sorbents for given metals present in fluid phases [24]. However, in the practical operation of full-scale sorption processes, continuous-flow fixed-bed columns are often preferred.…”