Abstract
It is of great significance to develop sorbents which efficiently capture heavy metals in the incineration of municipal solid waste. In adsorption process, mass-transfer has been an important factor affecting the adsorption capacity. In this study, we synthesized Si-Al xerogel with high surface area, large pore diameter and volume with the attempt to investigate the effect of pore diameter on adsorption. And as a comparison, the crystallized Si-Al with the same Si/Al ratio has also been studied. The BET surface area, pore volume and diameter of synthesized Si-Al xerogel are 441.84 m2/g, 0.37 cm3/g, and 3.3 nm, respectively. Adsorption experiment results show that the saturated adsorption capacity of Si-Al xerogel is 57.8% higher than that of crystallized Si-Al at 600 °C. Combined with the characterization results of BET, SEM, TEM and EDS, it is speculated that the high porosity of Si-Al xerogel can improve mass-transfer limitations. So, the results in this study will be helpful in the design of novel sorbents with high adsorption heavy metals capacity and the setting of engineering operating parameters in the actual incineration of municipal solid waste in the future.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
