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首页> 外文期刊>RSC Advances >Magnetic activated carbon prepared from rice straw-derived hydrochar for triclosan removal
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Magnetic activated carbon prepared from rice straw-derived hydrochar for triclosan removal

机译：由稻草衍生的水炭制备的用于去除三氯生的磁性活性炭

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摘要

Recently, considerable attention has been given to the hydrothermal liquefaction (HTL) of waste rice straw for the production of bio-oil and hydrochar. However, hydrochar material could not be directly applied in the environmental field, due to its limited porosity and surface area. In order to improve the porosity and adsorption capacity of rice straw-derived hydrochar, it was activated and magnetized to a magnetic activated carbon. The activation condition for hydrochar was firstly considered, due to the negative effect of the magnetic medium. Results suggested that the as-prepared magnetic activated carbon possessed a large surface area (around 674 m(2) g(-1)), and exhibited both a high adsorption capacity and a fast adsorption rate for triclosan (TCS) removal. In addition, magnetic activated carbon can be easily recovered from aqueous solutions by an external magnetic field. Overall, the waste rice straw-derived hydrochar can be transformed to a highly efficient magnetic adsorbent for TCS removal.
机译：近来，已经对废稻草的水热液化（HTL）进行了相当大的关注，以生产生物油和水煤焦。然而，由于其有限的孔隙率和表面积，水炭材料不能直接应用于环境领域。为了提高稻草衍生的炭的孔隙率和吸附能力，将其活化并磁化为磁性活性炭。由于磁性介质的负面影响，首先考虑了水焦的活化条件。结果表明，所制备的磁性活性炭具有较大的表面积（约674 m（2）g（-1）），并且具有较高的吸附容量和三氯生（TCS）去除的快速吸附速率。另外，可以容易地通过外部磁场从水溶液中回收磁性活性炭。总体而言，可以将废稻草衍生的烃类转化为高效的磁性吸附剂，以去除TCS。

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