Abstract
This study developed a novel lump activated alumina-based composite material (AACM), which composed of activated alumina, polyacrylic acid, sodium polyacrylate, and sodium alginate with a mass mixing ratio of 10:1.5:1.5:1.5. The 10:1.5:1.5:1.5 AACM had the rigid and compact structure without the problems of crack and disintegration. Moreover, due to great structure strength, air channels of 10:1.5:1.5:1.5 AACM can be made by the drilling machine, which was uncomplicated and fast, and can save the mold cost. Under the same adsorption conditions, equilibrium adsorption capacities of 10:1.5:1.5:1.5 AACM were 1.3–2.7 times higher than those of activated alumina in the range of 50–90% relative humidity, and 1.1−1.4 times better than those of a silica gel-based composite material (SGCM) in the high relative humidity (80−90% RH). The calculated results by a linear driving force model showed that 10:1.5:1.5:1.5 AACM possessed greater adsorption rate coefficients compared to activated alumina and SGCM. Moreover, the energy factor of 10:1.5:1.5:1.5 AACM was comparable to that of SGCM at the regenerative conditions of 50 °C and 15% RH, and it was 53% and 27% higher than activated alumina and SGCM, respectively, when using the return air for regeneration. Thus, the proposed AACM is competitive and flexible for extensive applications.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call