The method includes providing a reactor that comprises at least a first multicellular extruded body oriented with {HEAD ~ its cells} extending in {TAIL ~ parallel} in a vertically downward direction from a first end of the body to a second end 
extending in
The method includes providing a reactor that comprises at least a first multicellular extruded body oriented with { HEAD ~ its cells } extending in { TAIL ~ parallel } in a vertically downward direction from a first end of the body to a second end
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH