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To investigate the dominant role and mechanism of solid particles in enhancing mass and heat transfer and catalytic effects during CO2 desorption from rich liquids, nano-titanium dioxide (TiO2) and zeolite (HZSM-5) are selected as representative particles to represent the enhancement of heat and mass transfer and chemical catalytic effects, respectively. A continuous stirring reactor was set up, and the ratio of CO2 desorption rate from rich liquids with and without particle addition was defined as the desorption enhancement factor. The effects of varying particle mass fraction, particle size, stirring speed, CO2 loading of the rich liquid, and absorbent type on the CO2 desorption enhancement were systematically investigated. The results show that, the HZSM-5 particles achieve a higher desorption enhancement factor compared with the TiO2 particles, this is primarily due to the higher micropore surface area and Brønsted acid site coupling parameters of HZSM-5 particles. Additionally, the desorption enhancement factor for TiO2 is less affected by operational conditions, fluctuating between 1.00 and 1.20. In contrast, increasing the particle mass fraction and CO2 loading in the rich liquid significantly enhances the desorption effect of HZSM-5, with the desorption enhancement factor reaching up to 2.25. A linear relationship was observed between the HCO3– concentration in the rich liquid and the desorption enhancement factor for HZSM-5, indicating that HZSM-5 particles promote the CO2 desorption process by enhancing the reaction pathway related to HCO3–. This finding provides a theoretical basis for further optimizing the design of solid particles and improving CO2 desorption efficiency from rich liquids.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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