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Review of modifications of activated carbon for enhancing contaminant uptakes from aqueous solutions

机译：审查改性活性炭以增强从水溶液中吸收污染物的能力

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摘要

Due to its versatility and wide range of applications,activated carbon is widely used as contaminant removal media.Recent research have focused on enhancing the effectiveness of activated carbon by modifying their specific properties in order to enable the carbon to develop affinity for certain contaminants.In view of this,a comprehensive list of literatures on chemical,physical and biological modification techniques of activated carbon pertaining to enhancement of contaminant removal from aqueous solutions was compiled and reviewed.Acidic treatment to introduce acidic functional groups onto surface of activated carbon was by far,the most studied technique.It was apparent from the literature survey that the beneficial effects of specific modification techniques on activated carbon adsorption of targeted contaminant species from aqueous solutions were profound,with some studies reported increase of contaminant uptake factors of more than 2.Concurrently,considerable decreases associated with certain contaminant uptakes can also occur depending on the technique used.
机译：由于活性炭的多功能性和广泛的应用范围，它被广泛用作污染物去除介质。最近的研究集中在通过改变活性炭的特定特性来提高活性炭的有效性，以使活性炭对某些污染物具有亲和力。有鉴于此，编写并综述了有关活性炭的化学，物理和生物改性技术的综合文献，这些文献与提高从水溶液中去除污染物的能力有关。迄今为止，已经进行了将酸性官能团引入活性炭表面的酸性处理，从文献调查中可以明显看出，特定的修饰技术对水溶液中目标污染物的活性炭吸附具有巨大的益处，一些研究报告说污染物吸收因子增加了2倍以上。相关的大量减少根据所使用的技术，也可能发生某些污染物的吸收。

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