Reusable nitrogen-doped mesoporous carbon adsorbent for carbon dioxide adsorption in fixed-bed

被引：56
作者：
Yaumi, A. L. [1 ,2 ]
Abu Bakar, M. Z. [1 ]
Hameed, B. H. [1 ]
机构：
[1] Univ Sains Malaysia, Sch Chem Engn, Engn Campus, Nibong Tebal 14300, Penang, Malaysia
[2] Univ Maiduguri, Dept Chem Engn, Maiduguri, Borno State, Nigeria
来源：
ENERGY | 2017年 / 138卷
关键词：
Carbon dioxide capture; Adsorption; Coconut shell; Breakthrough curve; Glucosamine; Regeneration; POSTCOMBUSTION CO2 CAPTURE; ACTIVATED CARBON; POROUS CARBONS; PERFORMANCE; BIOMASS; TEMPERATURE; SORBENTS; GAS; SUPERCAPACITORS; REGENERATION;
D O I：
10.1016/j.energy.2017.07.130
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Reusable nitrogen-doped carbon derived from coconut shell was prepared as a sustainable alternative for carbon dioxide (CO2) adsorption from gas streams. The procedure is based on carbonization and chemical activation with coconut shell, glucosamine, and KOH as the activating agent. The textural, properties, as well as the fixed-bed adsorption and regeneration performance of the adsorbent were investigated using the fixed-bed adsorption column. The surface nature and properties of the adsorbent changed remarkably due to the surface modification that enhanced the adsorption process. The adsorbent showed a maximum CO2 uptake of 4.23 mmol/g at 30 degrees C and 1 bar. CO2 adsorption capacity increased with initial concentration and decreased with increases in temperature and flowrate. The adsorption capacity and physiochemical properties of the adsorbent were preserved after 20 adsorption desorption cycles without significant loss in capacity. This finding suggests that the synthesized adsorbent is a good candidate for CO2 capture from post-fossil fuel combustion processes. (C) 2017 Elsevier Ltd. All rights reserved.
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页码：776 / 784
页数：9
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