
Aug 15, 2018 · The optimal washing conditions including the effective concentration of the washing solution (e.g., 0.1–1.0 M HCl or 0.05–0.2 M EDTA), the soil/solution ratio (e.g., 20–50 g L −1), and agitation time (e.g., 0.5–5 h) are case-specific and have to be determined by small-scale trials. If a single washing solution cannot be formulated to
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