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. 2014 Dec 9;9(12):e114858. doi: 10.1371/journal.pone.0114858

Figure 5. REE patterns of adsorbed fraction of REE onto the milt powder at pH 2 and pH 4.

Figure 5

The adsorbed fraction at pH 2 after adsorption at pH 4 and its acidification to pH 2 are also shown to assess the reversibility of the adsorption.