Document qddvMzkakyjxX6jMaGL1eJb2K

RECYCLED AR226-2647 \ \ GO \ Z-47 REV 6-82 T * B l.lR rl t> 1803 E. I. d u P o n t d e N e m o u r s & C o m p a n y IN CORPORATED P.O . Box 1217 P a r k e r s b u r g . W. V a . 26102 POLYMER PRODUCTS DEPARTM ENT AR226-2647 cc: D. M. von Schriltz-Wilm. J. E. Crum J. R. Lawson A. C. Sobrero W. M. Stewart July 14, 1992 TO: Rie Brandenburg - Dordrecht Jern Di k - Dordrecht Kazu Yokoyama - HDF Mike McClusky - WW Rob McElhany - REOP Harry Heath - Chambers Works 44150 Bart Ruiter - Louviers James C. Moore - Spruance Fabiola Sepulveda - D12032-1 N. Marinir - Chambers Works 76815 Everett I. Baucom - Fayetteville FROM: Rogai1 J. 2fR ^Washington Works K) /' $ ADSORPTION OF AMMONIUM PERFLUOROOCTANATE ON CARBON 'ILW-i Attached is a report of Calgon Carbon's adsorption isotherm test work for ammonium perfluorooctanate (C-8) on carbon. We at Washington Works are planning to use carbon adsorption as the technology to remove C-8 from our waste water. RJZ:sal Attachment BETTER T H IN G S FOR BETTER LIVIN G BOD000393 EID563366 C A L C O N C A R B O N C O R P O R A T I O N P.O. B O X 717 PIT T S B U R G H , PA 15230-0717 (412) 787-6700 TWX:671 1837CCCPGH FAX: 4 1 2 / 7 8 7 - 6 6 7 6 412/787-6813 June 29, 1992 Ro g e r J. Zipfel DuPont Polymers P. 0. Box 1217 Parkersburg, WV Dear Roger, 26102 I would like to first thank you for the time that you spent with me on Wednesday discussing the C-8 removal project. The information you provide will be valuable in making our system recommendation. Please find attached a copy of the Isotherm Report prepared by our Research and Development staff. If you have any questions concerning the data or results interpretation, please do not hesitate to call me. I have also asked Dr. Greenbank to give you a call to discuss the PAC vs. GAC issue we were discussing. Thanks again and I will be in contact with you within a week to discuss our process recommendations. Very truly yours C A L G O N C A R B O N C O RIPPOORRiA T I O N J M H / m l s :3186 Attachment J. Michael HavelRa Technical Sales Representative BOD000394 EID563367 CONFIDENTIAL CALGON CARBON CORPORATION Wastewater Technical Service Report Adsorption Isotherm Testing for Removal of Ammonium Perfluoro .) Octanate from Industrial Wastewater Prepared for: Roger J. Zipfel DuPont Polymers Parkersburg, WV am `- ~ pi. BOD000395 EID563368 Wastevater Technical Service No. 0692-09 Page 2 Executive Summary DuPont has an industrial wastevater that is contaminated with four fluorotensides (CR , ammonium perfluoro octanate). The contaminant is a commonly used surfactant in their teflon plant and other DuPont plants. They are required to remove the contaminant by the end of the year. The problem is believed to be a toxicity related issue. A request was made for Calgon Carbon Corporation to conduct feasibility testing with the use of activated carbon to remove the (CR) surfactant. No specific treatment objective was listed in the request; however, 99 percent removal or non-detectable limits of surfactant was mentioned in a preliminary discussion of the project. The industrial wastewater, as received, was water white in color and had some white suspended solids. Raw Characterization is shown in Table I. Glass fiber filtration removed the solids and the filtrate was water white andrclear. An eleven point isotherm was conducted on the contaminated water usingservice ! carbon. The results of the isotherm show the service carbon would remove 99.9 percent of the ammonium perfluoro octanate (Cg) from the wastewater. The^ isotherm curve shows a one phase plot with an estimated equilibrium capacity of 224 mg/g. The theoretical carbon use rate at equilibrium was calculated at 3.5 lbs/1000 gallons. Refer to Table II and Figure I. Recommendations The sample received for laboratory testing contained white suspended solids; therefore, filtration was required prior to isotherm testing. It.is recommended that it may be necessary to investigate solids riemosgal prior to a full scale adsorption system. Also, the isotherm data only deiteEmines the theoretical carbon use rate based on the equilibrium capacity antibcshould not be used for design purposes. BOD000396 EID563369 Wastewater Technical Service No. 0692-09 Page 3 Introduction DuPont used surfactants mainly in their teflon and other plant processes. Their industrial wastewater is contaminated with surfactants (four fluorotensides - C ammonium perfluoro octanate). The surfactant contamination may be a toxicity related problem, which needs to be cleaned up by the end of the year. An isotherm was conducted using service carbon to determine the feasibility of removing the contaminants. Procedure A. Sample . The industrial wastewater was collected by the customer and shipped to Calgon Carbon Corporation. One 6.5 gallon glass carboy of the contaminated water was received May 5, 1992. The sample was stored in the refrigerator (4) upon receipt. The sample appeared water white with white suspended ,1 .> solids settled at the bottom of the container. B. Activated Carbon The isotherm was conducted using service carbon, i.e., activated carbon that had been reactivated. The carbon vas water washed, oven dried, land -o. pulverized to 95% minus 325 mesh prior to isotherm testing. % inai Characterization data of the carbon are shown in Table XII. ~t oi j - C. Filtration The raw wastewater was vacuum filtered through Whatman 934-All, 11 centimeter glass fiber filter paper. The filtrate was water white and clear. D. Adsorption Isotherm Testing An eleven point isotherm was conducted on the industrial wastewater. The varying dosages were weighed out (Control, 0.01, to 10.0 grams) and each dose was added to one liter of filtered wastewater. The dosages were conducted in one liter Erlenmeyer flasks. The carbon/liquid slurries were stirred with the use of magnetic stirring apparatus. The solutions were allowed to stir for 24 hours, then filtered through 0.45 micron millipore pads to remove the carbon. E. Analytical The pH, suspended solids, and conductivity were determined using methods described in "Standard Methods for Examination of Water and Wastewater", current edition. Eighteen hundred milliliters of each filtered dosage were sent to CH,M Hill Analytical Laboratories for analyses of the surfactant (Cg ). ' BOD000397 EID56337 0 Wastewater Technical Service No. 0692-09 Page 4 Discussion Characterization of the raw wastewater is shown in Table I. The data shov 100 mg/L of the surfactant. The equilibrium capacity was calculated at 224 mg/g and the corresponding theoretical carbon use rate was estimated at 3.5 lbs/1000 gallons. The isotherm data and curve are shown in Table II and Figure I, respectively. BOD000398 EID563371 Table I DuPont Parkersburg, WV - TSR No. 0692.09 Characterization of Rav Wastewater Analysis pH . Suspended Solids Conductivity Ammonium Perfluoro Octanate (Cg) Concentration mg/L 3.2 94 410 umhos/cm 100 BOD000399 EID563372 Table II DuPont Parkersburg, W - TSR No. 0692-09 Adsorption Isotherm Report Parameters Lab No-: C54242 Sample Volume Agitation Time Temperature Pretreatment Sample Point Contaminant Raw (Cg) Analysis 1 Liter 24 hours Ambient Glass Fiber Filtered -** FEP Vet Finishing Recycle Water Ammonium Perfluro Octanate (Cg) 100 mg/L Dosage ms Carbon (M) Control 0.01 0.025 0.05 0.1 0.25 0.5 1.0 2.5 5.0 10.0 Remaining (C) mg/L mg 93.0 93.0 93.0 93.0 88.0 88.0 84.0 84.0 71.0 71.0 37.0 37.0 8.4 8.4 0.4 <0.1 <0.1 <0.1 0.4 -- -- -- mg Adsorbed (X) -- 5.0 9.0 22.0 56.0 84.6 92.6 -- -- Carbon Loading (X/M) ____ 200 180 220 224 169.2 92.6 -- -- .------ -- Comments: X M CQ = 224 mg/g Theoretical Carbon Use Rate @ Equilibrium = 3.5 lbs/1000 gallons BOD000400 EID563373 Table III DuPont Parkersburg, W - TSR No. 0692-09 Activated Carbon Characterization Data Material Test A.D. (G/CC) Screen, % On -40 Moisture X (As Packed) Ash % Iodine No. Service Carbon Specification Minimum Maximum -60 5 2 9 750 BOD000401 EID563374 ADSORPTION ISOTHERM FOR THE REMOVAL OF AMMONIUM PERFLUORO OCTANATE FIGURE I d a t e __ CALGON CARBON CORPORATION /)//>&?- O 9 TECHNICAL SUPPORT REQUEST tsr p & " 327-F DISTRIBUTION: W hits-Lab; Yellow-File; Pink - Originator BOD000403 EID56337 6 liAY--13--9' 14:34 FROM ChLGM CARBON N.C.SALES TO BLDG.K3 P.03 TSR NO.. ISOTHERM TEST REQUEST Customer Name: Location: ____ _ ftmtcgosborg_v-Jy------------- Application Engineer. Scendeva .Salesperson:. m.kiP- V i a v a i I. Process or System Description (provide as much detail as possible - attach pages, if necessary): 1. Application Area: , Groundwater,__________________ ______ Wastewater---------------- -- -------- --------- Process----------- 2. Description of the Customer's Process or Stream: , ,,. $e.& a tta c h e d co.it report 3. Stream Composition (detail all components, concentrations, (Attach M SD S), etc.). S e e afcfca.cv.ed caU report: 4. Does the Sample contain volatiles? yes/no. If yes, special sampling piocedwes,gftpyld. be-arrsnged. 5. Sample Storage PbT Ambient/friHeratg>'OtheL^_ 11. 1. Sample Propertied' '$H --------- --------------------.... TOC Suspended SBlidP . ------------------------ C o lo r -------- Other knpswiftroperties 2. Pretreatment Requirements --------------------------------------------------------- r w -r n e n r - 3. Test Conditions A. Temperature atrs 'a l& w lr ----------------- --------------------- ---- -------------- B. Carbon_______ --------------------------------------------------- ------------------------ -- ----------------------------------- C. pH______________------------------------------------------------ -- ......-- ------------;-------- -------------------------- 4. Vonitoring P- - oi & Detection Levet . A. TOC ' ----------------------------- ----------------------------- -- ------------ ------ ------------------------- B. Color Method ________ M et^ :-------------------------------------------------------- -- ------------------------ C. Specific Organic ________ List: C o (.T o ' o s . ^ r n e d . ,\o ^ D. Other _______ '-`st: ......... -- ------------------------ ---------- ------ ------ ------------------ 5. Special Sampling and/or Handling Requirements A. Volume for return ___ .------------------------------------------- ---------- -- ------------------------- B. Zero Headspace _ _ _ _ _ _ _ _ _ ----------------------------------------------- -- ----- -------------------- --------- C. Inert Headspace - -- ________ _________________ ____ ___________________ -- 329-F BOD000404 EID563377