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WRRCTR No.166 Activated Carbon Adsorption of Low Concentration Organic Pesticides in Water

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Title: WRRCTR No.166 Activated Carbon Adsorption of Low Concentration Organic Pesticides in Water
Authors: Dugan, Gordon L.
Gee, Henry K.
Oshiro, Kevin M.
Lau, L. Stephen
Keywords: activated carbon
organic pesticides
well water
water supply
water treatment
show 8 morewater pollution control
ethylene dibromide
pesticide removal
mini-column filtration
central Oahu

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LC Subject Headings: Carbon, Activated.
Ethylene dibromide.
Water -- Purification -- Adsorption.
Issue Date: Dec 1984
Publisher: Water Resources Research Center, University of Hawaii at Manoa
Citation: Dugan GL, Gee HK, Oshiro KM, Lau LS. 1984. Activated carbon adsorption of low concentration organic pesticides in water. Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC technical report, 166.
Series/Report no.: WRRC Technical Report
Abstract: A series of thirty separate experimental laboratory benchscale runs were
conducted in which concentrations of EDB and DBCP in water, ranging from
2,170 to 10,000 parts per trillion (ppt), were treated by passing various
quantities through both standard and fine-grained Calgon and Darco granulated
activated carbon (GAC). The results of the experiments indicate that
Calgon is more efficient than Darco in removing EDB and DBCP, that fine-grained
GACs are more efficient than standard GACs, that EDB is removed
more efficiently than DBCP, and that when a mixture of EDB and DBCP is
passed through the same GAC, the pesticide removal efficiency of the GAC -- based
on fine-grained Calgon -- decreases significantly. At single concentrations
of EDB, no detectable concentrations (at the 10-ppt level) were
noted when the maximum flow-through GAC loading rates were 259 gal/lb•day
(1.50 ml/g•min). Based on extrapolated results, the GAC requirement for
100 ppt pesticide concentrations is estimated to be approximately 1.0 lb/1.0 mil gal.
Description: Board of Water Supply Grant/Contact No. B368
Pages/Duration: vii + 53 pages
Appears in Collections:WRRC Technical Reports

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