Novel concept of supporting the membrane separation of CO2 in power plants by thermoacoustic dehumidification

Integration of a Metal–Organic Framework Film with a Tubular Whispering-Gallery-Mode Microcavity for Effective CO2 Sensing

“…Nowadays, the CO 2 concentration in the atmosphere is continuously increasing, thus the measurement and control of CO 2 emissions are becoming more and more important. , CO 2 measurements are required in the agriculture industry, biochemical process management, and industrial emission monitoring . Especially, in the field of industrial combustion, which is the main source of CO 2 emissions, the CO 2 content of the exhaust gas will reach 10 to 20% . For instance, in boiler feed water heaters, the CO 2 content of the emitted flue gas will reach more than 80% .…”

“…On the other hand, application of semiconductor-based sensors is limited due to their high operating temperature (over 100 °C), low sensitivity, and poor selectivity . In addition, the working range of these sensors is generally inadequate for industrial applications …”

“…5 Especially, in the field of industrial combustion, which is the main source of CO 2 emissions, the CO 2 content of the exhaust gas will reach 10 to 20%. 6 For instance, in boiler feed water heaters, the CO 2 content of the emitted flue gas will reach more than 80%. 7 Thus, high-performance CO 2 sensors that can quantitatively sense CO 2 with low power consumption and a wide working range are attracting tremendous attention.…”

“…16 In addition, the working range of these sensors is generally inadequate for industrial applications. 6 Optical sensors based on refractive index (RI) change have become an alternative gas detection tool owing to their handheld capability and room-temperature operation. 17−19 As promising candidates, optical fiber-based sensors 20,21 and whispering-gallery-mode (WGM) microcavity-based sensors 22 were developed and applied in sensing the surrounding environment.…”

CO₂ Capture from a Simulated Dry Exhaust Gas by Internally Heated and Cooled Temperature Swing Adsorption

“…To store and use CO 2 derived from combustion emission gases, a major technological challenge is to separate and isolate CO 2 from said combustion emission gases. ere are various methods for separating and capturing CO 2 from combustion emission gases, which include solid absorption methods, chemical absorption methods, membrane separation methods, pressure swing adsorption (PSA), and temperature swing adsorption (TSA) (Chowdhury et al, 2014;Numaguchi et al, 2017;Riboldi and Bolland, 2017;Remiorz et al, 2019;Jiang et al, 2020a). Among these technologies, chemical absorption methods that use aqueous monoethanolamine (MEA) solutions are the most mature technology for capturing CO 2 from combustion emission gases, and furthermore, are at a technology readiness level close to commercialization.…”