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首页> 外文期刊>Journal of industrial and engineering chemistry >Adsorption characteristics of methyl mercaptan, dimethyl disulfide, and trimethylamine on coconut-based activated carbons modified with acid and base
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Adsorption characteristics of methyl mercaptan, dimethyl disulfide, and trimethylamine on coconut-based activated carbons modified with acid and base

机译：甲硫醇，二甲基二硫和三甲胺在酸和碱改性的椰子基活性炭上的吸附特性

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摘要

The influence of surface modification of activated carbon on the adsorption of methyl mercaptan (MM), dimethyl disulfide (DMDS), and trimethylamine (TMA) was investigated by treatments with 1N-HNO3 solution and lN-NaOH solution. The surface modifications changed the concentrations of functional groups on the surface of activated carbon. Also, the surface modifications changed breakthrough time and equilibrium adsorption capacity of MM, DMDS, and TMA. The adsorption capacities of MM and DMDS were increased by acid treatment, but decreased by base treatment. On the other hand, the adsorption capacity of TMA was decreased by both acid and base treatments. But the difference ranges of equilibrium adsorption capacities according to acidity and basicity of the surface were relatively small.
机译：通过用1N-HNO3溶液和1N-NaOH溶液处理，研究了活性炭的表面改性对甲基硫醇（MM），二甲基二硫（DMDS）和三甲胺（TMA）吸附的影响。表面改性改变了活性炭表面上官能团的浓度。而且，表面改性改变了MM，DMDS和TMA的穿透时间和平衡吸附能力。 MM和DMDS的吸附能力通过酸处理增加，但通过碱处理降低。另一方面，酸和碱处理均降低了TMA的吸附能力。但是，根据表面的酸度和碱性，平衡吸附能力的差异范围相对较小。

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