Abstract
Landfill gas (LFG) was upgraded to pure methane using the adsorption and absorption processes. Different toxic compounds like aromatics and chlorinated compounds were removed using granular activated carbon. The activated carbon adsorbed toxic trace components in the following order: carbon tetrachloride > toluene > chloroform > xylene > ethylbenzene > benzene > trichloroethylene ≈ tetrachloroethylene. After removing all trace components, the gas was fed to absorption apparatus for the removal of carbon dioxide (CO 2). Two alkanolamines, monoethanol amine (MEA) and diethanol amine (DEA) were used for the removal of CO 2 from LFG. The maximum CO 2 loading is obtained for 30 wt.% MEA which is around 2.9 mol L − 1 of absorbent solution whereas for same concentration of DEA it is around 1.66 mol L − 1 of solution. 30 wt% MEA displayed a higher absorption rate of around 6.64 × 10 − 5 mol L − 1 min − 1 . DEA displayed a higher desorption rate and a better cyclic capacity as compared to MEA. Methane obtained from this process can be further used in the natural gas network for city.
Sign-in/Register to access full text options 
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.
