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Preparation and Characterization of Activated Carbon from Waste Ion-Exchange Resin for CO_2 Adsorption

机译：废离子交换树脂活性炭的制备与表征CO_2吸附

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Activated carbons, derived from waste ion-exchange resin by CO_2 physical activation, were applied to separate CO_2 from flue gas against global warming. The BET specific surface areas of activated carbons at different activation temperatures and times were investigated. The CO_2 adsorption capacity was tested under non-isothermal and isothermal conditions. The experimental results show that when keeping the activation temperature constant, the specific surface area increases firstly and then decreases with increasing activation time. For the given activation time, the specific surface area rises firstly and then declines with increasing activation temperature. The adsorption capacity decreases with increasing temperature. The maximum adsorption capacity is 51.46 mg/g under the condition of 298 K and pure CO_2. Fractional order kinetic model is the best one to describe the kinetics of CO_2 adsorption. The activated carbons show the potential to be an effective adsorbent for the removal of CO_2 from flue gas.
机译：通过CO_2物理活化衍生自废离子交换树脂的活性炭，从烟气中施加与全球变暖的烟气分离。研究了不同活化温度和时间的活化碳的BET比表面积。在非等温和等温条件下测试CO_2吸附能力。实验结果表明，当保持激活温度常数时，比表面积首先增加，然后随着激活时间的增加而降低。对于给定的激活时间，比表面积首先上升，然后随着激活温度的增加而下降。吸附容量随着温度的增加而降低。在298k和纯CO_2的条件下，最大吸附容量为51.46mg / g。分数顺序动力学模型是描述CO_2吸附动力学的最佳方法。活性炭显示出具有用于从烟道气中除去CO_2的有效吸附剂的可能性。

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