esm223_11_Reading_Keller_presentation_MTBE

Esm223_11_Reading_Ke - Research on MTBE Remediation Alternatives Presented at 12th Annual National UST/LUST Conference 2000 Bren School of

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1 Research on MTBE Remediation Alternatives Arturo A. Keller Bren School of Environmental Science and Management University of California, Santa Barbara Presented at 12th Annual National UST/LUST Conference, 2000 Extent of Contamination of Drinking Water Supplies in CA z Data available: 43% of 245 drinking water reservoirs y 26 waterbodies showed concentrations above 5 ug/L y 13 waterbodies showed concentrations above 14 ug/L y MTBE monitoring data is trickling in z Groundwater contamination y 35 public drinking water wells with MTBE contamination y Potential for 0.3 to 1.2% of drinking water wells: x 60 to 160 public water supplies x 1000 to 5000 private water supplies y 2,100 LUFT sites with MTBE above 100 ug/L + 250 more y 200 to 880 new LUFT sites with MTBE per year in the future
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2 Applicable Technologies z Technologies Evaluated at UCSB y Air Stripping y Granular Activated Carbon y Advanced Oxidation Processes y Hollow Fiber Membranes z Other Technologies under study y Biofiltration y Fenton Oxidation y ORP (Oxygen Releasing Compound) y Enhanced In-situ biodegradation y Activated Carbon Fiber Physicochemical Data Properties at 25 o C MTBE ETBE TAME TBA Ethanol Vapor Pressure (atm) 0.330 0.200 0.090 0.054 0.069 Aqueous solubility (mg/L) 43,000 to 54,300 26,000 20,000 Henry’s Law Constant (Mol L Mol -1 L -1 ) 0.024 to 0.123 0.109 0.052 4.3x10 -4 to 5.9x10 -4 2.1x10 -4 to 2.6x10 -4 Octanol-Water Partitioning Coefficient, K ow (-) 10 1.2 10 1.74 No data 10 0.35 10 -0.16 to 10 -0.31 Boiling Point ( o C) 55.2 67 86.3 82.9 78.5 Density (g/mL) 0.74 0.73 0.77 0.79 0.79 Molecular Weight (g/mole) 88.15 102.18 102.18 74.12 46.07 CAS Number 1634-04-4 637-92-3 994-05-8 75-65-0 64-17-5
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Cases Used in Study Case 1 2 3 4 5 6 7 8 9 10 Concentration (ug/L) 100 100 100 500 1000 5000 100 500 1000 5000 Flow rate (gpm) 1000 500 100 100 100 100 10 10 10 10 z Scenarios: y LUFT: High concentration/low flowrate y Drinking water well or surface water reservoir: Low concentration/high flowrate y Treat to 5 ug/L Air Stripping z Air Treatment alternatives
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This note was uploaded on 08/06/2008 for the course ESM 235 taught by Professor Dunne during the Winter '08 term at UCSB.

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Esm223_11_Reading_Ke - Research on MTBE Remediation Alternatives Presented at 12th Annual National UST/LUST Conference 2000 Bren School of

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