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首页> 外文期刊>Water Science and Technology >Adsorptive removal of methylene blue by CuO-acid modified sepiolite as effective adsorbent and its regeneration with high-temperature gas stream
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Adsorptive removal of methylene blue by CuO-acid modified sepiolite as effective adsorbent and its regeneration with high-temperature gas stream

机译：CuO-酸改性海泡石作为有效吸附剂的吸附去除亚甲基蓝及其在高温气流中的再生

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摘要

In this study, the dynamic adsorption of methylene blue dye onto CuO-acid modified sepiolite was investigated. Meanwhile, the equilibrium and kinetic data of the adsorption process were studied to understand the adsorption mechanism. Furthermore, a high-temperature gas stream was applied to regenerate the adsorbent. The results showed that the Langmuir isotherm model was applied to describe the adsorption process. The positive value of enthalpy change indicated that the adsorption process was endothermic in nature. In the dynamic adsorption process, the best adsorption performance was achieved when the ratio of column height to diameter was 2.56 and the treatment capacity was 6 BV/h. The optimal scenario for regeneration experiments was the regeneration temperature of 550-650 degrees C, the space velocity of 100 min(-1) and the regeneration time of 10 min. The effective adsorption of CuO-acid modified sepiolite was kept for 12 cycles of adsorption and regeneration.
机译：在这项研究中，研究了亚甲基蓝染料在CuO-酸改性海泡石上的动态吸附。同时，研究了吸附过程的平衡和动力学数据，以了解吸附机理。此外，施加高温气流以再生吸附剂。结果表明，采用Langmuir等温模型描述了吸附过程。焓变的正值表明吸附过程本质上是吸热的。在动态吸附过程中，当柱高与直径之比为2.56，处理能力为6 BV / h时，可获得最佳吸附性能。再生实验的最佳方案是再生温度为550-650摄氏度，空速为100分钟（-1），再生时间为10分钟。 CuO-酸改性海泡石的有效吸附保持12次吸附和再生循环。

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