Biofilm Sorption of Natural Organic Materialby Gary Carlson, Univ of Colorado, Boulder, CO, USA,
JoAnn Silverstein, Univ of Colorado, Boulder, CO, USA,
Abstract: The biosorption of non-ozonated and ozonated natural organic matter (NOM) onto a dense biofilm was investigated at the University of Colorado Environmental Engineering laboratories. Bench-scale experiments were conducted using four different biomass concentrations produced by varying the amount of supplemental carbon substrate(glucose) to each individual reactor: reactor 1 (R1) received 40mg/l as carbon/day, reactor 2 (R2) received 20mg/l as carbon/day, reactor 3 (R3) received 10mg/l as carbon/day, and reactor 4 (R4), the abiotic control reactor, received no carbon substrate. In the experiments influent natural DOC range varied from 0-24mg/l with an influent chloroform precursor concentration range of 0-800ug/L. The biosorption removal of NOM was measured as DOC and chloroform precursor concentrations. Statistically, ozonation did not change the amount of NOM removal by biosorption compared to non-ozonation.
Subject Headings: Sorption | Biofilm | Carbon fibers | Substrates | Chemical treatment | Water treatment
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