Speaker:
Dr. Gary Carlson
University of Colorado at Boulder
Boulder, Colorado
Date:
Thursday, January 11, 1996, 3:30 pm.
Ben Bandy Conference Room
Center for Applied Energy Research
Abstract:
Biofilm sorption of natural organic matter (NOM) and NOM-surrogate compounds was investigated with experimentation
specifically addressing the effects of ozonation, sorbate molecular size, and sorbate charge. An experimental
procedure was developed to separate biosorption from biodegradation using a live biofilm. Biosorption effectively
removed 20% to 30% of NOM quanitified as DOC and chloroform precursors. It was found that ozonation did not
significantly affect biofilm sorption , while NOM-surrogate compound research indicated that an increase in sorbate
molecular size decreases sorption. NOM-surrogate compound results also indicated that anionic charge decreases
biofilm sorption.