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首页> 外文期刊>Chemical Engineering Communications >CO2 Adsorption by Modified Palm Shell Activated Carbon (PSAC) Via Chemical and Physical Activation and Metal Impregnation
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CO2 Adsorption by Modified Palm Shell Activated Carbon (PSAC) Via Chemical and Physical Activation and Metal Impregnation

机译：改性棕榈壳活性炭（PSAC）通过化学和物理活化以及金属浸渍对CO2的吸附

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摘要

The aim of this study was to verify the ability of nickel-impregnated palm shell activated carbon (PSAC) for CO2 adsorption and compare its performance with the chemically and physically activated PSAC. Sodium hydroxide and CO2 were used as activating agents for chemical and physical activation, respectively. Nickel nitrate hexahydrate (Ni(NO3)(2)center dot 6H(2)O) was used as a precursor for metal impregnation. The effect of different chemical loadings (NaOH: 20-50 wt%), metal impregnation (Ni(NO3)(2)center dot 6H(2)O: 16-28 wt%), and heat treatment time (1-4 h) was studied as parameters. Adsorption capacity was calculated using breakthrough graphs. The effect of humidity on CO2 adsorption and desorption of CO2 was also investigated in this study. The results revealed that chemically modified PSAC yields the highest adsorption capacity (48.2 mg/g) compared to other methods of activation. Interestingly, it was found that the adsorption capacity of nickel-impregnated PSAC was similar to other types of metal-impregnated activated carbon. Humidity gave a negative effect on CO2 adsorption. In summary, results showed that chemical activation is an efficient technique to modify PSAC for CO2 adsorption.
机译：这项研究的目的是验证浸渍镍的棕榈壳活性炭（PSAC）对CO2吸附的能力，并将其性能与化学和物理活化的PSAC进行比较。氢氧化钠和二氧化碳分别用作化学和物理活化的活化剂。六水合硝酸镍（Ni（NO3）（2）中心点6H（2）O）被用作金属浸渍的前体。不同化学负载（NaOH：20-50 wt％），金属浸渍（Ni（NO3）（2）中心点6H（2）O：16-28 wt％）和热处理时间（1-4 h）的影响）作为参数进行了研究。使用穿透图计算吸附容量。这项研究还研究了湿度对CO2吸附和解吸的影响。结果表明，与其他活化方法相比，化学修饰的PSAC产生最高的吸附容量（48.2 mg / g）。有趣的是，发现镍浸渍的PSAC的吸附能力与其他类型的金属浸渍的活性炭相似。湿度对CO 2吸附产生负面影响。总而言之，结果表明，化学活化是一种改性PSAC以吸收CO2的有效技术。

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