Adsorption experiments and mechanisms of methylene blue on activated carbon from garden waste via deep eutectic solvents coupling KOH activation
文献类型：期刊论文
| 作者 | Cao, Yunqi1; Yang, Li1; Liu, Fang1; Yu, Qiang2,3 |
| 刊名 | BIOMASS & BIOENERGY
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 182页码:11 |
| 关键词 | Activated carbon Deep eutectic solvents KOH Methylene blue Absorption Density functional theory |
| ISSN号 | 0961-9534 |
| DOI | 10.1016/j.biombioe.2024.107074 |
| 通讯作者 | Liu, Fang(fang.liu@cumt.edu.cn) |
| 英文摘要 | Carbon-based adsorbents derived from biomass waste are validly capable of adsorbing and purifying dye wastewater. Herein, a novel adsorbent (p-DES-GHC(KOH)) from garden waste was developed by a two-stage coupling strategy of deep eutectic solvents (DES) modification and KOH activation for methylene blue (MB) adsorption. The properties and adsorption behaviors of p-DES-GHC(KOH) were investigated, and the adsorption mechanisms were thus proposed based on experiments and density functional theory (DFT) calculations. The results indicated that p-DES-GHC(KOH) exhibited superior pore structures with a surface area of 883.95 m(2)/g and substantial oxygenated functional groups. The maximum absorption capacity of MB was 351.72 mg/g at 25 degrees C, with isotherms and kinetics fitting well to the Freundlich model along with the pseudo-second-order kinetic model, respectively. The Elovich fitting results indicated that the adsorption process of MB on the p-DES-GHC(KOH) surface was not mainly dominated by chemisorption, but also regulated by other adsorption processes. The endothermic and spontaneous absorption processes with the stochasticity of MB molecules on the p-DES-GHC(KOH) surface were verified by thermodynamic analysis. DFT calculations revealed that the introduction of hydroxyl and carbonyl groups reduced the adsorption energy and reinforced the adsorption capacity of p-DES-GHC(KOH) for MB through synergistic effects. The adsorption of MB on p-DES-GHC(KOH) might be affected by pore filling, pi-pi interaction, and electrostatic attraction. The potential of p-DES-GHC(KOH) as a promising adsorbent for MB removal from wastewater was confirmed in this study. |
| WOS关键词 | HYDROTHERMAL CARBONIZATION ; SEWAGE-SLUDGE ; REMOVAL ; HYDROCHAR ; EQUILIBRIUM ; KINETICS ; BIOCHAR ; ACID ; PYROLYSIS ; STRAW |
| 资助项目 | National Natural Science Foundation of China[52176143] ; Outstanding Youth Foundation of Jiangsu Province of China[BK20220159] ; Fundamental Research Funds for the Central Universities[2023KYJD1009] |
| WOS研究方向 | Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:001173247500001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; Outstanding Youth Foundation of Jiangsu Province of China ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.giec.ac.cn/handle/344007/41078]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Liu, Fang |
| 作者单位 | 1.China Univ Min & Technol, Sch Low Carbon Energy & Power Engn, Xuzhou 221116, Jiangsu, Peoples R China 2.South China Agr Univ, Inst Biomass Engn, Guangzhou 510642, Guangdong, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Yunqi,Yang, Li,Liu, Fang,et al. Adsorption experiments and mechanisms of methylene blue on activated carbon from garden waste via deep eutectic solvents coupling KOH activation[J]. BIOMASS & BIOENERGY,2024,182:11. |
| APA | Cao, Yunqi,Yang, Li,Liu, Fang,&Yu, Qiang.(2024).Adsorption experiments and mechanisms of methylene blue on activated carbon from garden waste via deep eutectic solvents coupling KOH activation.BIOMASS & BIOENERGY,182,11. |
| MLA | Cao, Yunqi,et al."Adsorption experiments and mechanisms of methylene blue on activated carbon from garden waste via deep eutectic solvents coupling KOH activation".BIOMASS & BIOENERGY 182(2024):11. |
入库方式： OAI收割
来源：广州能源研究所
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