Abstract
AbstractThe transport of bimetallic nano-Fe/Cu particles through coarse sand-packed columns was investigated simulating particle transport under 25 injection strategy scenarios. The considered transport mechanisms included retention on and release from the solid grains, modeled by a dual-site advection-dispersion-deposition equation, and clogging of the porous medium. The transport kinetics and parameters used in the research reported in this paper were calibrated against experimental data, previously reported, and simulated using computer software. The influence of the injected particle concentration (2–12 g/L), flow rate (43.2–172.8 m/day), duration, and eventual alternation of injection and flushing periods was analyzed. The impact of each scenario was quantified in terms of particle mobility, porous medium clogging, water pressure, and uniformity of distribution of the particles in the porous medium. The results of this paper indicate that when injecting under conditions typical of a full-scale aqui...
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