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Abstract This study explored a new facile one-step method of preparing magnetically modified biochar (NMBC) with easy separation characteristics for the improvement of Cr (VI) removal. The prepared NMBC was… Click to show full abstract
Abstract This study explored a new facile one-step method of preparing magnetically modified biochar (NMBC) with easy separation characteristics for the improvement of Cr (VI) removal. The prepared NMBC was characterized by scanning electron microscopy, elemental analysis, Fourier transform infrared spectroscopy, and superconducting quantum interference device. Results showed that NMBC processed a rough and uneven surface with high N and amine contents, as well as magnetization for the separation. The kinetics, isotherm and thermodynamic analysis of Cr (VI) adsorbed on the prepared materials were also investigated, as well as the effect of initial pH. NMBC showed a high Cr (VI) adsorption capacity of 48 mg g −1 , which is twice higher than that of traditional magnetic biochar (MBC, 19 mg g −1 ). The different mechanisms of MBC and NMBC were also discussed.
Journal Title: Journal of The Taiwan Institute of Chemical Engineers
Year Published: 2017
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