{HEAD ~ Trace quantities} of {TAIL ~ nutrients} 22, such as nitrogen and phosphorous, are also added to the bioreactor 17 to support the methanotrophic microorganisms 21 
{ HEAD ~ Trace quantities } of { TAIL ~ nutrients } 22 , such as nitrogen and phosphorous , are also added to the bioreactor 17 to support the methanotrophic microorganisms 21
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH