Centers and Institutes (MU): Recent submissions
Now showing items 21-40 of 1401
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Effect of subsurface structure and bypass water flow on copper and zinc movement
(1994)The potential movement of heavy metals beyond the soil application zone is a cause for public concern. Structural features of the argillic horizon in soils such as the Tuskeego (fine mesic montomorillonitic, mesic Mollie ... -
Role of runoff and interflow in chemical transport for claypan soils
(1996)No-tillage systems have been found to increase water runoff for some soils. This is a major concern because this increased runoff has the potential for increasing the runoff of dissolved herbicides in the spring since these ... -
Enhancement of nitrification in submerged flow constructed wetlands
(1992)Four laboratory-scale, submerged flow constructed wetland (SFCW) mesocosms (Juncus effesus) were used to evaluate methods of increasing oxygenation within the wetlands to enhance nitrogen removal from applied wastewaters. ... -
Effect of phytase on phytate P utilization by turkeys
(1992)An in vitro method was developed for poultry to predict inorganic phosphorus release from maize-soya bean feeds containing supplemental phytase (E.C. 3.1.3.8), and to quantify the effect of acid phosphatase (E.C. 3.1,3.2.), ... -
Development of new methodology for the assessment of water treatment plant performance with respect to the removal of cyst-sized particles
"This is the fourth in a four-part series of year-long studies conducted at the Capital City Water Treatment Plant, Jefferson City, Missouri, over the period of 1985 to 1989, to evaluate the effect of temperature on water ... -
Degrading sludge with cellulase complex
(1989)The ability of indigenous and commercial cellulase complexes to degrade native and pretreated sludge was evaluated. Indigenous enzyme was produced in our laboratory, where as commercial cellulase was purchased from a ... -
Nitrate removal by denitrification using 'captor' media
(1991)In many areas throughout the U.S. groundwater supplies are contaminated by nitrates in excess of the standard of 10 mg/L (as N)mandated by the Safe Drinking Water Act of 1974 and its subsequent amendments. The nitrate ... -
Managing land application rates of to optimize economic value and water quality
Annual broiler processing capacity in southwestern Missouri is expected to increase from 127 million birds in 1989 to 245 million birds in 1995, or 93 percent. Much of this growth is expected to occur in Barry county where ... -
Evaluation of a small municipal constructed wetland wastewater treatment system
(1991)Modifications were made to an existing wastewater wetland treatment system to improve its effluent quality. Modifications included installation of baffles in the pond and the planting of selected plant materials. Removal ... -
Field evaluation of termiticide movement - phase II
(1989)In recent years, chlordane has been found in fish in Missouri at high levels. The Missouri Department of Health has issued advisories against fish consumption in a number of lakes and rivers because of chlordane contamination, ... -
Field evaluation and model calibration for agricultural pesticide transport to groundwater - phase II
(1989)Certain soil physical and chemical property data are needed to predict transport of agricultural chemicals (pesticides, herbicides, etc.) to groundwater. The objective of this investigation was to evaluate the soil variability ... -
Chlordane movement during rainfall
(1988)Indoor rainfall simulation experiments were conducted to quantify the mass of technical chlordane leaving an experimental soil box in runoff, splash and leachate. The initial mass of technical chlordane was uniformly ... -
Macropore effects on pesticides transport to groundwater
(1988)The objective of this investigation was to evaluate the leaching and degradation characteristics of atrazine and bromide in a field of alluvial soils under irrigated, no-till management. The experimental site was 0.1 ha ... -
Evaluation of an on-site sewage disposal system at the Lake of the Ozarks
(1986)An aeration device - conventional soil disposal field system was monitored for one year in the Lake of the Ozarks area to assess its treatment efficiency and effect on the water quality of the immediate area. The aeration ... -
Ferrate ion, FeO42-, as a Cl2 and MnO4- replacement in water purification
(1986)A method has been devised by which solid samples of K2FeO4 can be stabilized with respect to decomposition through a double-mixed salt with inexpensive K2SO4. This solid solution is stable over a wide range of compositions ... -
Characterization of runoff and infiltration from no-till soybeans with selected winter cover crops
(1986)The influence of "living mulch" winter cover crops on soil loss, runoff amount and quality and soybean growth was studied at the Midwest Claypan Experimental runoff plots located on Mexico silt loam (Udollic Ochraqualf). ... -
Kinetics of chlorine depletion and microbial growth in household plumbing systems
(1987)To date, the microbial ecology of water treatment and distribution systems has never been systematically explored. Despite chronic problems with microbial growths in water distribution systems, the waterworks literature ... -
Microbiological and chemical changes in drinking water systems caused by increased temperature during the summer months
(1985)As part of a continuing effort to diminish the incidence of persistent microbiological and chemical violations, the Missouri Department of Natural Resources, Division of Public Water Supplies, has enlisted the assistance ... -
Seasonal effects on total bacterial removals in a rapid sand filtration plant
(1986)The present study is the first comprehensive study of the removal of total bacterial cells from a drinking water supply. Using the direct microscopic count to enumerate the total bacterial population present in raw, settled ... -
Monitoring volatile organic compounds in groundwater: indicators of organic hazardous wastes pollution in Missouri
(1985)This research addresses the role of volatile organic compounds (VOC) as indicators of groundwater pollution by hazardous wastes. These compounds consist primarily of hydrocarbons, e.g., benzene, and chlorinated hydrocarbons, ...