Activation characteristics comparison of activated carbons prepared from biomass and lignite

doi:10.3969/j.issn.0438-1157.2013.09.036

CIESC Journal ›› 2013, Vol. 64 ›› Issue (9): 3338-3347.DOI: 10.3969/j.issn.0438-1157.2013.09.036

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Activation characteristics comparison of activated carbons prepared from biomass and lignite

LI Dong^1,2, WANG Yin³, YANG Juan², YAO Changbin², SU Hong¹, XU Guangwen²

1. School of Environment and Material Engineering, Yantai University, Yantai 264005, Shandong, China;
2. National Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
3. Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, Fujian, China

Received:2013-01-10 Revised:2013-02-26 Online:2013-09-05 Published:2013-09-05
Supported by:
supported by the National Natural Science Foundation of China(51176197,21161140329),the High-tech Research and Development Program of China(2012AA021401)and the National Key Technology R&D Program(2012BAC03B05,2010BAC66B01).

生物质和煤基活性炭制备过程的活化特性比较

李栋^1,2, 汪印³, 杨娟², 姚常斌², 苏宏¹, 许光文²

1. 烟台大学环境与材料工程学院, 山东烟台 264005;
2. 中国科学院过程工程研究所多相复杂系统国家重点实验室, 北京 100190;
3. 中国科学院城市环境研究所, 福建厦门 361021

通讯作者: 汪印, 许光文
作者简介:李栋(1989- ),男,硕士研究生。
基金资助:
国家自然科学基金项目(51176197,21161140329);国家高技术研究发展计划项目(2012AA021401);国家科技支撑计划项目(2012BAC03B05,2010BAC66B01)。

Abstract

Abstract: This work compared the activation reactivities of different carbonized materials to justify the adsorption properties of the activated carbons prepared under the same steam activation conditions but from different raw materials,including rice husk,sawdust and lignite.The results showed that the activation reactivity of biomass feedstock was higher than lignite,and the activation rate of carbonized material varied in a descending order of ash-removed rice husk,sawdust,rice husk and lignite.Characterizing the carbonized materials by ultimate and proximate analysis,BET,SEM,XRD,FTIR,and XPS was performed to clarify further the reason for such different activation characteristics.It was found that the higher the volatile component and organic oxygen and the lower the ash content in the raw material,the easer it would be to produce high quality activated carbon via a short-time activation.

Key words: biomass, lignite, steam activation, adsorption property, activation activity

摘要： 分别以稻壳、木屑及褐煤为原料用水蒸气活化法制备了活性炭,比较了所得活性炭的吸附性能和炭化料的反应活性,探明了造成不同原料活化特性差异的原因。结果表明,活化过程中生物质原料的反应活性优于褐煤,炭化料的活化速率遵循脱灰稻壳>木材炭化料>稻壳炭化料>褐煤炭化料。通过对炭化料进行元素分析、气化反应活性分析、BET、SEM、XRD、FTIR、XPS等物理和化学性质的表征,揭示了不同原料表现出不同活化特性的原因。结果表明,在相同炭化和活化条件下,原料挥发分越高,灰分越低,炭化料有机含氧量越高,则水蒸气的活化速率越快,更容易在短时间内制备出高性能的活性炭。

关键词: 生物质, 褐煤, 水蒸气活化, 吸附性能, 活化反应性

CLC Number:

TQ424.1

LI Dong, WANG Yin, YANG Juan, YAO Changbin, SU Hong, XU Guangwen. Activation characteristics comparison of activated carbons prepared from biomass and lignite[J]. CIESC Journal, 2013, 64(9): 3338-3347.

李栋, 汪印, 杨娟, 姚常斌, 苏宏, 许光文. 生物质和煤基活性炭制备过程的活化特性比较[J]. 化工学报, 2013, 64(9): 3338-3347.

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Activation characteristics comparison of activated carbons prepared from biomass and lignite

生物质和煤基活性炭制备过程的活化特性比较

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