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