College of Environment Science and Engineering, Guangxi University, Nanning 530004, China.
College of Environment Science and Engineering, Guangxi University, Nanning 530004, China.
Bioresour Technol. 2014 Dec;174:67-73. doi: 10.1016/j.biortech.2014.10.007. Epub 2014 Oct 8.
Magnetic biochar was prepared with eucalyptus leaf residue remained after essential oil being extracted. Batch experiments were conducted to examine the capacity of the magnetic biochar to remove Cr (VI) from electroplating wastewater and to be separated by an external magnetic field. The results show that the initial solution pH plays an important role on both sorption and separation. The removal rates of Cr (VI), total Cr, Cu (II), and Ni (II) were 97.11%, 97.63%, 100% and 100%, respectively. The turbidity of the sorption-treated solution was reduced to 21.8NTU from 4075NTU after 10min magnetic separation. The study also confirms that the magnetic biochar still retains the original magnetic separation performance after the sorption process.
磁性生物炭是用提取精油后剩余的桉树叶片残渣制备的。通过批实验研究了磁性生物炭从电镀废水中去除 Cr(VI)并通过外加磁场进行分离的能力。结果表明，初始溶液 pH 值对吸附和分离都有重要影响。Cr(VI)、总 Cr、Cu(II)和 Ni(II)的去除率分别为 97.11%、97.63%、100%和 100%。吸附处理后，溶液的浊度从 4075NTU 降低到 10min 磁分离后的 21.8NTU。研究还证实，磁性生物炭在吸附过程后仍保留了原始的磁分离性能。
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