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Copper and cadmium removal by Mn oxide-coated granular activated carbon

机译：锰氧化物包覆的颗粒活性炭去除铜和镉

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Mn oxide-coated granular activated carbon (MnTOG) was prepared by coating Mn oxide onto granular activated carbon (TOG).The Cu(II) and Cd(II) adsorption capacities of granular activated carbon were significantly improved by Mn oxide coating.Mn oxide,TOG and MnTOG had pH_(zpc) about 6,8.5,and 5.8,respectively.From multiple Cu(II) adsorption/regeneration cycle tests,MnTOG can be regenerated and reused through at least six cycles.More than 70% of the adsorbed Cu(II) was recovered at the end of six adsorption cycles.MnTOG has the ability to remove Cu(II) and Cd(II) to trace levels (<4mug/L) in a column process.For Cd(II) and Cu(II) sorption by MnTOG,Cu(II) had a higher adsorption capacity and a slower diffusion process.There was competition between metals:Cd(II) removal was hindered by the presence of Cu(II),however,Cu(II) removal was only slightly inhibited in the presence of Cd(II).
机译：通过将Mn氧化物涂覆到颗粒活性炭（TOG）上制备Mn包覆的颗粒状活性炭（MnTOG）。 ，TOG和MnTOG的pH_（zpc）分别约为6,8.5和5.8。通过多次Cu（II）吸附/再生循环测试，MnTOG可以通过至少六个循环进行再生和再利用。超过70％的吸附在六个吸附周期结束时回收了铜（II）.MnTOG能够在柱处理中将铜（II）和镉（II）去除至痕量（<4mug / L）。 （II）通过MnTOG吸附，Cu（II）具有更高的吸附能力和较慢的扩散过程。金属之间存在竞争：Cu（II）的存在阻碍了Cd（II）的去除，但是Cu（II）在Cd（II）存在下，去除仅受到轻微抑制。

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