Zobrazeno 1 - 10 of 36 pro vyhledávání: '"Foppe B. DeWalle"'
1
Concentration and biotoxicity assay of dilute aqueous solutions of volatile chlorinated organics using supercritical fluid extraction
Autor: Foppe B. DeWalle, Stuart E. Strand, Ryan Wacker, Jerry E. Ongerth
Publikováno v: Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology. 30:1867-1890
Chlorinated volatile organic compounds (VOCs) were extracted from dilute aqueous samples into methanol to provide sufficient concentration for bacterial toxicity measurements. Using equipment designed to prevent loss of volatiles, standards and biolo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8f23bd9a08d59bdec271036dfd08624
https://doi.org/10.1080/10934529509376308
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2
Watershed use and Giardia cyst presence
Autor: Foppe B. DeWalle, G D Hunter, Jerry E. Ongerth
Publikováno v: Water Research. 29:1295-1299
The presence of Giardia in a heavily visited watershed in the Olympic Mountains was compared to that in an adjacent watershed having much lower human use. Also, statistical relationships between cyst presence and watershed use parameters were examine
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f9d4aa4cb6048e933c324cf0b5abbf56
https://doi.org/10.1016/0043-1354(94)00271-8
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3
Composition and variability of leachate from recent and aged areas within a municipal landfill
Autor: John C. Kissel, Nancy Ragle, Foppe B. DeWalle, Jerry E. Ongerth
Publikováno v: Water Environment Research. 67:238-243
A leachate study was conducted at a large, operating, regional municipal solid waste (MSW) landfill near Seattle, Washington, to examine differences in composition and emission rates between old and new areas of the fill. The landfill began operation
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8c1708a8d22df188ce4d5cac62daaef
https://doi.org/10.2175/106143095x131411
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5
The movement of typhoid organisms in saturated, permeable soil
Autor: Foppe B. DeWalle, James A. McGinnis
Publikováno v: Journal - American Water Works Association. 75:266-271
An outbreak of typhoid fever occurred during May 1972 in Yakima County, Wash., involving groundwater transmission of Salmonella typhi between a septic tank used by a known typhoid carrier and a nearby shallow well.1 The distance between the septic ta
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4baab025afadd11d8c33332afde85000
https://doi.org/10.1002/j.1551-8833.1983.tb05137.x
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6
Sanitary Landfill Leachates and Their Treatment
Autor: Edward S. K. Chian, Foppe B. DeWalle
Publikováno v: Journal of the Environmental Engineering Division. 102:411-431
An extensive analysis of both organic and inorganic constituents in leachate samples collected from landfills located throughout the United States was conducted in this study. Ratios of certain parameters of leachate, such as COD/TOC, BOD 5 /COD, FA-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f3655600f87984528fdab7ec7808750d
https://doi.org/10.1061/jeegav.0000476
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7
Detection of trace organics in well water near a solid waste landfill
Autor: Edward S. K. Chian, Foppe B. DeWalle
Publikováno v: Journal - American Water Works Association. 73:206-211
The majority of municipal and industrial solid wastes is disposed of in landfills. Although sanitary landfill guidelines have reduced the immediate public health hazards from vector exposure, environmental degradation can occur through leaching of or
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78bf29bae80c89c1782aab165f70cf34
https://doi.org/10.1002/j.1551-8833.1981.tb04681.x
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8
Removal of Organic Matter by Activated Carbon Columns
Autor: Foppe B. DeWalle, Edward S. K. Chian
Publikováno v: Journal of the Environmental Engineering Division. 100:1089-1104
This study shows that the major organic fraction in activated sludge effluent that exhibited a high adsorption in activated carbon columns is a fulvic acid-like material with a molecular weight ranging from approximately 100 - 10,000. A high molecula
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ce6a3aa1509cec59e9c538b6a65f2e91
https://doi.org/10.1061/jeegav.0000251
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