부산대학교 도서관

In the present study, a facile and eco-friendly strategy is developed for in situ conversion of waste lime mud and sawdust to valuable calcium-rich activated carbon monoliths (Ca-ACM) in the presence of sticky rice. The obtained “green hybrid bodies” can exhibit superior compressive strength of 18 MPa, water resistance for more than 60 days, and SO 2 removal efficiency up to 93.6%. The SO 2 adsorption capacity of Ca-ACM was evaluated to be 57.1 mg/g in a fixed bed reactor. The remarkable performance of Ca-ACM could be a result of synergetic desulfurization behaviors derived from the integrated activated carbons and Ca-based components, as well as the compact microstructure that is similar to the biomimetic mineralization system of sticky rice lime mortar. The newly developed Ca-ACM is a promising cost-effective (∼CNY 4.88/kg) alternative to comparable commercial activated carbons that can be used as a clean and ecologically compatible adsorbent for SO 2 capture. The route for direct massive utilization of lime mud as an indispensable component for making functional adsorbent reported herein is very beneficial to lime mud waste recycling, SO 2 pollution control, and sustainable growth of papermaking industry. [ABSTRACT FROM AUTHOR]