Binary carbon dioxide and nitrogen adsorption on pomelo peel-derived porous sorbent

被引:2
|
作者
Abd Ghafar, Nawal [1 ]
Jamian, Nor Ruwaida [1 ]
Tan, Lian See [1 ]
Jusoh, Nurfatehah Wahyuny Che [1 ,2 ]
机构
[1] Univ Teknol Malaysia, Malaysia Japan Int Inst Technol MJIIT, Dept Chem & Environm Engn ChEE, Kuala Lumpur, Malaysia
[2] Univ Teknol Malaysia, Inst Future Energy, Ctr Hydrogen Energy, Kuala Lumpur, Malaysia
来源
CHEMICAL ENGINEERING RESEARCH & DESIGN | 2023年 / 199卷
关键词
CO2:N(2 )adsorption; Post-combustion; IAST prediction; Pomelo peel; Activated carbon; SINGLE-STEP SYNTHESIS; HIGH-SURFACE-AREA; ACTIVATED CARBON; CO2; CAPTURE; FACILE PREPARATION; AQUEOUS-SOLUTIONS; KOH ACTIVATION; RICE HUSK; BIOMASS; ADSORBENTS;
D O I
10.1016/j.cherd.2023.09.018
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The rising concern regarding CO2 emission from fossil fueled-power plants, along with the heightened interest in repurposing biowaste has necessitated the utilization of biowaste as an adsorbent for CO2 capture. In this study, the pomelo peel-derived activated carbon (POM-AC) was investigated as a potential adsorbent for post-combustion CO2 capture application, which involves capturing CO(2 )from the CO2 and N-2 gas mixture. The POM-AC was characterized, revealing a microporous-mesoporous structure that contains various surface functional groups including hydroxyl, carbonyl, carboxyl, and alkene groups. The strong affinity of POM-AC towards CO2 over N-2 was demonstrated from the increment in the CO2 and N-2 gas mixture uptake with the increase in CO2 gas compositions. The total adsorption capacity of POM-AC at ambient conditions for 100% CO2, 15% CO2, 10% CO2, and 5% CO2 is 127.8 mg/g, 55.7 mg/g, 49.1 mg/g, and 38.3 mg/g, respectively. Notably, POM-AC outperformed the commercial activated carbon (Chemiz-AC) at simulated post -combustion conditions due to POM-AC having smaller pores than Chemiz-AC. The Ideal Adsorbed Solution Theory (IAST) prediction of binary CO2 and N-2 adsorption equilibria showed higher CO2 adsorption capacity than N(2 )at post-combustion gas compositions (5-15% CO2), which further suggests its stronger preferential of CO2 over N-2. Furthermore, a relatively high CO2/N-2 selectivity of 23.9 was predicted for 15% CO2 gas composition. The adsorption isotherm and kinetic analysis revealed that the surface of POM-AC is hetero-genous, and the rate-controlling step of CO2 and N-2 adsorption is physisorption. Coupled with the utilization of a zero-cost biowaste as an activated carbon precursor, these findings showed that POM-AC could be a promising adsorbent for post-combustion CO2 capture application.(c) 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:21 / 32
页数:12
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