Simultaneous CO<sub>2</sub>/SO<sub>2</sub> adsorption performance of carbide slag in adsorption/desorption cycles
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Bibliographic record
Abstract
Abstract Simultaneous CO 2 /SO 2 adsorption performance of CaO derived from carbide slag (an industrial waste product from a chlor‐alkali plant) in multiple adsorption/desorption cycles was investigated in a dual fixed‐bed reactor. The effects of adsorption duration, SO 2 concentration, adsorption temperature, desorption conditions, and particle size on carbonation conversion, cumulative sulphation conversion, and total Ca utilization of the carbide slag over multiple cycles were discussed. SO 2 presence appreciably impedes the cyclic CO 2 adsorption capacity of the carbide slag. A longer adsorption duration causes a sharper drop in the carbonation conversion due to the adverse effect of SO 2 . The presence of SO 2 intensifies the effect of adsorption temperature on the carbonation conversion of the carbide slag. The optimum adsorption temperature for cyclic simultaneous CO 2 /SO 2 adsorption by the carbide slag is 700 °C. The high desorption temperature and CO 2 concentration (950 °C, 0.9999 L/L CO 2 ) are not beneficial to cyclic CO 2 /SO 2 adsorption. Both the carbonation conversion and cumulative sulphation conversion of the carbide slag decrease with increasing sorbent particle size in the cycles. The compact CaSO 4 product layer covers the surface of CaO derived from the carbide slag during the multiple cycles, which results in a sharp drop in the surface area and pore volume with the cycle number. Compared with limestone, the carbide slag exhibits higher SO 2 adsorption capacity and similar CO 2 adsorption capacity during the cyclic simultaneous CO 2 /SO 2 adsorption.
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Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
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