Patent ID: 9339760
Filing Date: 2016-05-17
CPC Classification: B01D,C02F,C05F,C07C,C10L,C12M,Y02E,Y02P,Y02W

Claim Text:
1. A method for removing contaminants in a biogas comprising: (a) heating and aerating anaerobic digester effluent in an aeration reactor to produce a first effluent with an alkaline pH; (b) contacting the first effluent from step (a) with an input biogas in a reactor to produce a treated biogas and a second effluent that has a lower pH as compared to the pH of the first effluent; (c) recovering the treated biogas from step (b), wherein the treated biogas has less H (d) aerating the second effluent of step (b) to produce a third effluent, wherein the third effluent has an alkaline pH; and (e) contacting the third effluent of step (d) with the recovered biogas of step (c) to remove CO