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