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The modification of hydrotalcite (LDH) by (NH4)2SO4 was investigated in order to apply the modified LDH (MLDH) as an adsorbent in the removal of Pb(II). During the SO42– modification, the exchange process between SO42– and CO32– in interlayer spaces took place along with Mg2+ partial dissolution from edges of the brucite sheets, which provided active sites for Pb(II) bonding to the adsorbent particles...
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