The experiment is the use of modified bentonite after the performance of adsorption to deal with dark red dye. The first 0.1mol/L 0.1mol/L of nitric acid and nitric acid Rail lanthanum solution to the 200ml distilled water mixed 20g bentonite, after mixing, aside, filtration, drying, grinding and other processes produced a Rail lanthanum modified clays. Research in different living conditions of the adsorption clays performance.
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