Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Stephen J. Randtke"'
Autor:
Stephen J. Randtke, Colton Kenner, Edward Peltier, Karen Shafer-Peltier, Ming Chen, Eric Albertson
Publikováno v:
Environmental Science: Water Research & Technology. 6:132-143
The formation of precipitates (scales) during reinjection limits the reuse of oil and gas production water (produced water) for additional oil recovery. Selective removal strategies that target Ba and Sr, the primary scale-forming cations, would limi
Publikováno v:
Separation and Purification Technology. 222:1-10
Divalent cations such as Ba2+, Sr2+, Ca2+, and Mg2+, commonly found in oil/gas produced water at high concentrations, adversely affect oil and gas production by forming scales in pipes, tanks, process equipment such as oil-water separators, and treat
Publikováno v:
Chemical Engineering Journal. 344:155-164
Complexing metal cations with water-soluble nano-sized ionic polyelectrolytes, combined with a separation process such as ultrafiltration (UF), is a potential strategy to remove or recover ionic heavy metals from water or wastewater. However, competi
Autor:
Jonathan Cuppett, Stephen J. Randtke
Publikováno v:
Opflow. 43:10-13
Autor:
Ming Chen, Edward Peltier, Saad Waseem, Stephen J. Randtke, Karen Shafer-Peltier, Orion Dollar
Publikováno v:
Water research. 170
Boron (B), normally present in ground water and sea water, is a vital micronutrient for plants, but is also toxic in excessive amounts. Under typical conditions, aqueous boron is present as boric acid (H3BO3), which is uncharged, making B particularl
Publikováno v:
Chemosphere. 213
With increasing arsenic (As) contamination incidents reported around the world, better processes for As removal from industrial wastewater and other contaminated waters are required to protect drinking water sources. Complexation of As with cetylpyri
Publikováno v:
Water Research. 79:68-78
Bisphenol A (BPA), bisphenol F (BPF), and bisphenol A diglycidyl ether (BADGE) are common components of epoxy coatings used in food packaging and in drinking water distribution systems. Thus, leachates from the epoxy may be exposed to the disinfectan
Autor:
Stephen J. Randtke, Jonathan Sieber-Denlinger, Scott W. Campbell, Frank deNoyelles, Gerald T. Blain, Vernon A. Strasser, Shugen Pan, Val H. Smith
Publikováno v:
Lake and Reservoir Management. 18:319-323
Drinking water for the City of Wichita, KS is provided by Cheney Reservoir, a eutrophic impoundment constructed by the U.S. Bureau of Reclamation in 1962. This large, shallow reservoir has a mean depth of 5.3 meters and a surface area of 40 km2. Nume
Publikováno v:
Journal - American Water Works Association. 87:64-77
Autor:
Stephen J. Randtke, Craig D. Adams
Publikováno v:
Environmental Science & Technology. 26:2218-2227
The primary ozonation byproducts of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] were determined in natural and synthetic water with a maximum initial atrazine concentration of 15 μg/L. Deethylatrazine [2-amino-4-chloro-6-(isopro