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Effects of heavy feedlot manure application rates on the basic infiltration rate of soilStritzke, Robert Dean January 2010 (has links)
Digitized by Kansas Correctional Industries
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Fluidized bed pyrolysis of cattle feedlot manureEngler, Cady Roy January 2010 (has links)
Digitized by Kansas Correctional Industries
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Carbon dioxide and ammonia removal from anaerobic digestion gasDaber, James V January 2011 (has links)
Digitized by Kansas Correctional Industries
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A continuous watershed model for evaluation and design of feedlot runoff control systemsBean, Theodore A January 2011 (has links)
Digitized by Kansas Correctional Industries
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Kinetics and mechanisms of methoxide substitution and electroreduction of hexachlorobenzeneSidhu, Jeswant K., University of Western Sydney, Faculty of Informatics, Science and Technology January 2000 (has links)
Hexachlorobenzene (HCB) is a pollutant, and there is an urgent need to degrade it. Two methods of degrading HCB to ethers are nucleophilic substitution and electroreduction, chosen for their viability and safety. The kinetics of substitution of HCB by potassium hydroxide and methanol were examined. The substitution of HCB by methoxide produced 1,2,3,5-tetrachloro-4.6-dimethoxybenzene (1,2,3,5-TCDMB) as the major substitution product, and side reactions produced extra chloride due to other substitution products. Thus, the proposed reaction mechanism is complicated due to the formation of ethers and phenols due to consecutive and parallel reactions. The substitution products of HCB were uncatalytically and catalytically electroreduced. Products with increasingly more methoxy substituents had lower electron affinities and increasing positive free energies. Catalysed electroreduction was more effective than uncatalysed electroreduction in dechlorinating the HCB substitution products to aromatic ethers. The most effective organic catalysts were those that possessed the lowest electron affinity as reflected in the reduction potential. A combination of nucleophilic substitution and electroreduction of HCB and its substitution products produced mono-, di- and trimethoxide chloroaromatic ethers and phenols. These products, particularly the ethers, may have future applications as fragrance ingredients / Doctor of Philosophy (PhD)
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Retention of zinc-65 by Columbia River sedimentJohnson, Vernon Gene 10 December 1965 (has links)
Graduation date: 1966
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Radioactivity of sediments in the Columbia River estuaryJennings, Charles David 11 January 1966 (has links)
Graduation date: 1966
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Pollution prevention strategies used by Oregon hospitalsPatel, Neha T. 24 September 2002 (has links)
Waste generated by the health care industry has been cited as a major
source of toxic pollution, including mercury and dioxins, which poses a serious
threat to public health. The purpose of this study was to investigate pollution
prevention activities of health care facilities in Oregon related to environmentally preferable
purchasing practices, recycling, mercury reduction efforts, and written
policy. Surveys were sent to 57 hospitals in Oregon, 24 facilities responded
(42.1 %).
Results indicate that the following environmentally-preferable purchasing
practices are being implemented: purchasing reduced hazardous material (92%);
using recycled packaging (75%); and, using products made from recycled content
material (83%). Other practices, such as the purchasing of cadmium-free red bags
(25%), supplies shipped in reusable shipping containers (34%), and using minimal
packaging (46%) are being implemented in a few hospitals. None of the hospitals
are purchasing chlorine-free office paper.
The majority of participating Oregon hospitals are recycling paper (96%),
cardboard (96%), clear glass (67%), linens (87.5%), batteries (67%) and X-ray film
(83%). Fewer hospitals are recycling plastics: #1 PET and #6 polystyrene
(37.5%), #2 HDPE (42%), #5 polypropylene (33%). Fewer hospitals are also
composting food (46%), computers and equipment (42%), fluorescent lamps (21%)
and solvents/fixers (29%). Major barriers to recycling in hospitals include lack of
established markets for some materials, limited space to collect the materials, and
low employee participation.
The majority of participating hospitals are reducing the purchasing of
mercury containing products, replacing mercury blood pressure units and gauges,
replacing lab and housekeeping chemicals, and pharmaceuticals. Fewer than 50%
of then participating hospitals are replacing switches, recycling batteries and
conducting an inventory of mercury sources. Few hospitals are checking drains
and pipes for mercury contamination (13%), recycling fluorescent lamps (21%) and
requiring vendors to disclose mercury content below 1% (17%). While most
hospitals no longer purchase new mercury-containing devices, the cost associated
with disposal of mercury as a hazardous waste is a major barrier to elimination.
Hospitals located in urban areas in Oregon are more likely to implement
pollution prevention strategies than rural hospitals. Nearly all Oregon hospitals
lack a corporate policy on pollution prevention/source reduction, or written goals
on waste volume reduction or waste toxicity reduction efforts. The few hospitals
(8%) that have put policies in place have done so voluntarily, and with the full
support from upper-level management.
Based on theses findings recommendations include the following:
1) Establish a "Green Team" of hospital staff from diverse departments. This
group can then strategize about courses of action for the facility with input
from all responsible sectors.
2) Conduct a waste audit. This establishes a baseline of existing hospital waste
and will help determine how to shape a waste minimization program and
pollution prevention plan.
3) Pollution prevention education should be a top priority for all departments
within each hospital including purchasing, nursing, housekeeping and top
management. Many health care professionals are not aware of the link
between the products and practices they choose and the environmental consequences of these choices.
4) Rural hospitals can join pollution prevention email list serves such as the
Oregon Health Care Without Harm list (HCWHoregon-health.org) or the
H2E list serve (www.h2e-online.org) to share, learn and identify practical
strategies for pollution prevention and waste minimization.
5) Approach and involve upper level management to work with hospital
"green teams" to develop and implement a hospital policy on pollution
prevention. / Graduation date: 2003
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Implementing a radiation monitoring program at a solid waste landfillCrail, Scott Allen 03 May 1999 (has links)
More and more, modern society is incorporating the use of radioactive materials into everyday uses. And with society using more radioactive materials, the odds of it being accidentally disposed of into the solid waste stream increases.
There are several radiation systems available which market themselves as being complete and "ready to go". While it is true that a person could purchase one of these systems and would have coverage of the landfill, such a system does not provide the necessary education, response and liability protection programs. Indeed, it would be feasible to foresee a scenario where installing a systems could lead to an increase in liability and employee problems.
As a result, Coffin Butte Landfill worked with the author to establish a complete radiation monitoring program. This program encompasses everything from installment of the system to employee education and training. It also examined the myriad and murky depths of federal and state regulation dealing with solid and radioactive waste to help the landfill set an acceptance policy and minimize liability. This led the author to the belief that the combination of federal and state
regulations imply a requirement for landfills to have a working radiation monitoring program.
Future government action remains uncertain as pertaining to a requirement for landfills to maintain a radiation monitoring system. Indeed, current state regulations are out of sync with federal regulations regarding acceptable public exposures. It is hoped that, with this study's help, Coffin Butte Landfill and Oregon State University will continue with the established relationship and be prepared to respond to regulation changes. / Graduation date: 1999
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Application of the gamma pathway exemption rule for naturally occurring radioactive materials in industrial waste using ISOSHLD-IIBahmaid, Mohammad A. 05 June 1995 (has links)
Graduation date: 1996
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