1. AN ABSORPTION-DESORPTION PROCESS FOR SELECTIVELY REMOVING CO2 OR H2S FROM A GASEOUS MIXTURE CONTAINING THE SAME IN COMBINATION WITH OTHER GASES, COMPRISING THE STEPS OF: CONTACTING SAID GASEOUS MIXTURE WITH A HOT AQUEOUS SOLUTION COMPRISING FROMA BOUT 15 TO ABOUT 40 W4EEIGHT PERCENT OF A POTSSASSIUM SALT SELECTED FROM THE GROUP CONSISTIBG OF POTASSIUM CARBONATE, POTASSIUM BORATE, AND MIXTURES THEREOF, AND A SMALLER AMOUNT WITHIN THE RANGE OF FROM ABOUT 2.0 TO 16.7% BY WEIGHT OF AN AMINE BORATE CHOSEN FROM THE FROUP CONSISTING OF MONOETHANOLAMINE BORATE, DIETHANOLAMINE BORATE, AN ETHYLENE POLYAMINE BORATE, AND A BORATE OF THE REACTION PRODUCT OF AN ETHYLENE POLYAMINE AND ETHYLENE OXIDE, IN AN ABSORPTION STAGE TO THEREBY CATALYZE THE ABSORPTION OF AT LEAST A PORTION OF THE CO3 OR H2S FROM SAID GASEOUS MIXTURE; MAINTAINING SAID HOT SOLUTION AT AN ELEVATED TEMPERATURE OF AT LEAST ABOUT 56*C.; REGENERATING THE HOT AQUEOUS SOLUTION CONTAINING THE ABSORBED CO2 OR H2S IN A REGENERATING STAGE BY STEAM STRIPPING AT LEAST A PORTION THEREOF FROM THE SOLUTION; AND RECYCLING AT LEAST A PORTION OF SAID REGENERATED SOLUTION FOR ABSORPTIVE CONTACT WITH SAID GASEOUS MIXTURE WHILE MAINTAINING SAID SOLUTION AT A TEMPERATURE OF AT LEAST SAID LEVEL OF 56*C.