Adsorption and desorption of m-xylene from supercritical carbon dioxide on activated carbon
Adsorption and desorption of m-xylene from supercritical carbon dioxide on activated carbon
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DOI：
10.1081/ss-100105913
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发表时间：
2001-01-01
影响因子：
2.8
通讯作者：
Brunner, G
中科院分区：
文献类型：
--
作者：
Benkhedda, J;Jaubert, JN;Brunner, G
报道了超临界二氧化碳在活性炭上的平衡负载量。实验数据通过测量从填充有活性炭的柱洗脱的对二甲苯的出口浓度直到流出物达到输入浓度而获得。Freundlich等温式与实验数据的相关性令人满意。在第二步中，研究了负载间二甲苯的活性炭的超临界二氧化碳再生。实验结果表明，再生活性炭对间二甲苯的吸附容量在多次循环后仍接近原炭，且保持稳定。研究了温度、压力和流速对再生效率的影响。
The equilibrium loadings of m-xylene from supercritical carbon dioxide on activated carbon are reported. The experimental data were obtained by measuring the outlet concentration of ni-xylene eluted from a column packed with activated carbon until the effluent reached the input concentration. The Freundlich isotherm expression was found to correlate the experimental data satisfactorily. In a second step, the regeneration by supercritical carbon dioxide of activated carbon loaded with m-xylene was investigated. The experimental data demonstrated that the adsorptive capacities of the regenerated activated carbon for m-xylene after many cycles were close to those of the virgin carbon and remained stable. The effects of temperature, pressure, and flow rate on regeneration efficiency were also studied.