In a second dual bed adsorber 18, {HEAD ~ the gaseous stream} is contacted with {TAIL ~ a bed} of LiAgX adsorbent under the conditions described above 
In a second dual bed adsorber 18 , { HEAD ~ the gaseous stream } is contacted with { TAIL ~ a bed } of LiAgX adsorbent under the conditions described above
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH