After the reaction is complete, {HEAD ~ the remaining solids} can be separated from the liquids by {TAIL ~ any suitable physical separation technique}, such as, filtration or centrifugation 
separated by
After the reaction is complete , { HEAD ~ the remaining solids } can be separated from the liquids by { TAIL ~ any suitable physical separation technique } , such as , filtration or centrifugation
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH