Removal of selected water disinfection byproducts, and MTBE in batch and continuous flow systems using alternative sorbents.

Removal of selected water disinfection byproducts, and MTBE in batch and continuous flow systems using alternative sorbents.

Access: Use of this item is restricted to the UNT Community.
Date: December 2002
Creator: Kadry, Ahmed Y.
Description: A study was conducted to evaluate the sorption characteristics of six disinfection byproducts (DBPs) on four sorbents. To investigate sorption of volatile organic compounds (VOCs), specially designed experimental batch and continuous flow modules were developed. The investigated compounds included: chloroform, 1,2-dichloroethane (DCE), trichloroethylene (TCE), bromodichloromethane (BDCM), methyl tertiary butyl ether (MTBE), bromate and bromide ions. Sorbents used included light weight aggregate (LWA), an inorganic porous material with unique surface characteristics, Amberlite® XAD-16, a weakly basic anion exchange resin, Amberjet®, a strongly basic anion exchange resin, and granular activated carbon (GAC). Batch experiments were conducted on spiked Milli-Q® and lake water matrices. Results indicate considerable sorption of TCE (68.9%), slight sorption of bromate ions (19%) and no appreciable sorption for the other test compounds on LWA. The sorption of TCE increased to 75.3% in experiments utilizing smaller LWA particle size. LWA could be a viable medium for removal of TCE from contaminated surface or groundwater sites. Amberlite® was found unsuitable for use due to its physical characteristics, and its inability to efficiently remove any of the test compounds. Amberjet® showed an excellent ability to remove the inorganic anions (>99%), and BDCM (96.9%) from aqueous solutions but with considerable elevation of pH. ...
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Correlation of Humus and Water Content on Saba Clay, Denton, Texas

Correlation of Humus and Water Content on Saba Clay, Denton, Texas

Date: August 1938
Creator: Wilson, Clyde Byron
Description: This study is an attempt to determine the relationship between humus and the water found in it and how both effect soil in Denton county, Texas.
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Distribution of Phosphates in a Sewage Plant and its Receiving Waters

Distribution of Phosphates in a Sewage Plant and its Receiving Waters

Date: May 1969
Creator: Hansard, John D.
Description: The purpose of this paper is to detail the distribution and quantity of soluble phosphates in an activated sludge plant, its discharge creek, and receiving reservoir. The resultant analyses and comparison of data should provide some better understanding of the fate of phosphorus in a Southwestern waterway system.
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A Determination of the Bothe Depression Factor for Discs in Water

A Determination of the Bothe Depression Factor for Discs in Water

Date: August 1950
Creator: Patton, Bob
Description: The purpose of this work is to determine experimentally the depression of the neutron density by a detecting foil. The depression factor is known as the "self-shading" of the foil.
Contributing Partner: UNT Libraries
Climate Change Impacts on the United States: The Potential Consequences of Climate Variability and Change

Climate Change Impacts on the United States: The Potential Consequences of Climate Variability and Change

Date: 2000
Creator: National Assessment Synthesis Team (U.S.)
Description: This assessment examines how global climate climate change affects the United States, and describes strategies for adaptation.
Contributing Partner: UNT Libraries
Bacterial Survey of Representative Denton County Wells with Special Reference to Sanitation

Bacterial Survey of Representative Denton County Wells with Special Reference to Sanitation

Date: June 1937
Creator: Roberts, Sally Stevens
Description: This thesis aimed to study the seventy-two representative wells of Denton County and to determine the possibilities of infection with typhoid organism. The sanitary survey and the test for Colon-Aerogenes bacteria show that 55% of the 72 wells studied are unsanitary, 27% are sanitary, and 18% are doubtful.
Contributing Partner: UNT Libraries
Effects of X-Irradiation on Water and Ion Flux in Isolated Roots

Effects of X-Irradiation on Water and Ion Flux in Isolated Roots

Date: January 1967
Creator: Wall, Malcolm J.
Description: Due to the relatively small amount of work concerning radiation, it was thought feasible to use ionizing radiation as a tool to study the relationship between water and salt flux in isolated root systems. Moreover, the more quantitative potometric method lends itself well to such a study, since the two processes can be followed simultaneously. the aims of this study, therefore, were 1) to determine effects of X-irradiation on water, calcium and potassium flux in excised onion roots; 2) to determine the dose levels required for producing permeability changes; 3) to investigate the nature of radiation damage to root systems; and 4) to attempt to shed light on the relation between water transport and ion movement in root systems.
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Drinking Water Management Act

Drinking Water Management Act

Date: January 27, 2006
Creator: China (Republic : 1949- ). Huan jing bao hu shu
Description: This law was passed by the Republic of China (Taiwan) to safeguard public health by protecting drinking water resources from pollution by dumping, logging, industry, nuclear waste, ranching, recreation, mineral exploration and extraction, transportation, and other activities.
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A Gas Chromatographic Study of Actinomycete Tastes and Odors

A Gas Chromatographic Study of Actinomycete Tastes and Odors

Date: August 1966
Creator: Hendricks, Albert C.
Description: The primary purpose of this study was to continue the search for a suitable liquid phase which could be utilized in a gas chromatographic study of actinomycetic tastes and odors. Of equal importance were the attempts to characterize the compounds found in the odor water.
Contributing Partner: UNT Libraries
Federal Irrigation Legislation

Federal Irrigation Legislation

Date: January 1970
Creator: Colton, Ronald Wayne
Description: The West had to somehow solve its water deficit if that region were ever to overcome its retarded growth and development. Irrigation offered at least a partial solution if the rivers could be tapped, and this concept opened a whole new phase in the legislative, political, and economic development of the West and of the nation.
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An Investigation of Gas Chromatographic Separation of Tastes and Odors Produced by Actinomycetes

An Investigation of Gas Chromatographic Separation of Tastes and Odors Produced by Actinomycetes

Date: January 1965
Creator: Matlock, James K.
Description: It is the purpose of this thesis to evaluate a few selected gas chromatographic materials for the separation of odorants produced by an actinomycete culture under laboratory conditions. Also to compare the results obtained with concentrated solutions of a surface water containing similar odors under natural conditions.
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Science and Technology to Support Fresh Water Availability in the United States

Science and Technology to Support Fresh Water Availability in the United States

Date: November 2004
Creator: National Science and Technology Council (U.S.). Committee on Environment and Natural Resources.
Description: This report describes issues regarding water use, conservation, and management. Many parts of the United States are expected to face water shortages in the near future.
Contributing Partner: UNT Libraries
A Mineral Analysis of the Henrietta Water Supply

A Mineral Analysis of the Henrietta Water Supply

Date: 1941
Creator: Selvidge, R. F.
Description: The water which supplies the city of Henrietta, Clay County, Texas, is obtained from the Little Wichita River. A concrete dam was built across the river at a point about a mile and a half north of town.
Contributing Partner: UNT Libraries
Bacterial Survey of the Sources of Drinking Water of Trinidad, Texas, with Special Reference to Sanitation

Bacterial Survey of the Sources of Drinking Water of Trinidad, Texas, with Special Reference to Sanitation

Date: 1944
Creator: Coldwell, Lavenia Ruth
Description: A bacterial analysis of the water from thirty-six sources of consumption by the white population of Trinidad, Henderson County, Texas, was made to determine the potability of each of these in regard to infection from typhoid or related organisms.
Contributing Partner: UNT Libraries
Portrait of a southern Progressive: The political life and times of Governor Pat M. Neff of Texas, 1871-1952

Portrait of a southern Progressive: The political life and times of Governor Pat M. Neff of Texas, 1871-1952

Access: Use of this item is restricted to the UNT Community.
Date: May 2011
Creator: Stanley, Mark
Description: Pat M. Neff was a product of his political place and time. Born in Texas in 1871, during Reconstruction, he matured and prospered while his native state did the same as it transitioned from Old South to New South. Neff spent most of his life in Waco, a town that combined New South Progressivism with religious conservatism. This duality was reflected in Neff's own personality. On moral or religious issues, he was conservative. On economic and social issues, he was Progressive. He thus was a typical Southern Progressive who de-emphasized social and political change in favor of economic development. For instance, as governor from 1921 to 1925, his work to develop and conserve Texas' water resources brought urbanization and industrialization that made the New South a reality in the state. Neff was a devout Baptist which influenced his politics and philosophy. He was president of Baylor University, a Baptist institution, for fifteen years after leaving the governor s office and he led the Southern Baptist Convention (SBC) in the 1940s. He combined Progressive and Christian values as he argued for the establishment of the United Nations and advocated forgiveness and brotherhood after World War II. The war's end marked the ...
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Toward a philosophy of water: Politics of the pollution and damming along the Ganges River.

Toward a philosophy of water: Politics of the pollution and damming along the Ganges River.

Date: May 2007
Creator: McAnally, Elizabeth Ann
Description: This thesis sets out to develop a beginning of a philosophy of water by considering philosophical implications of ecological crises currently happening along the waters of the Ganges River. In my first chapter, I give a historical account of a philosophy of water. In my second chapter, I describe various natural and cultural representations of the Ganges, accounting for physical features of the river, Hindu myths and rituals involving the river, and ecological crises characterized by the pollution and damming of the river. In my third and final chapter, I look into the philosophical implications of these crises in terms of the works of the contemporary philosopher Bruno Latour.
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The Effects of Climate Change on Agriculture, Land Resources, Water Resources, and Biodiversity in the United States

The Effects of Climate Change on Agriculture, Land Resources, Water Resources, and Biodiversity in the United States

Date: May 2008
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research.
Description: This document is a part of the Synthesis and Assessment Products described in the U.S. Climate Change Science Program Strategic Plan. The report describes how climate affects the design, construction, safety, operations, and maintenance of transportation infrastructure and systems. The prospect of a changing climate raises critical questions regarding how alterations in temperature, precipitation, storm events, and other aspects of the climate could affect the nation's roads, airports, rail, transit systems, pipelines, ports, and waterways. Phase I of this regional assessment of climate change and its potential impacts on transportation systems addresses these questions for the region of the U.S. central Gulf Coast between Galveston, Texas and Mobile, Alabama.
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Experiment Station Record, Volume 87, July-December, 1942

Experiment Station Record, Volume 87, July-December, 1942

Date: 1943
Creator: U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations.
Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Puerto Rico station. Name and subject indexes start on page 901.
Contributing Partner: UNT Libraries Government Documents Department
Experiment Station Record, Volume 79, July-December, 1938

Experiment Station Record, Volume 79, July-December, 1938

Date: 1939
Creator: U.S. Department of Agriculture. Office of Experiment Stations.
Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Puerto Rico Station. Name and subject indexes start on page 721.
Contributing Partner: UNT Libraries Government Documents Department
GEO Year Book 2007: An Overview of Our Changing Environment

GEO Year Book 2007: An Overview of Our Changing Environment

Date: 2007
Creator: United Nations Environment Programme
Description: This publication is an overview of major global environmental issues and policy decisions during the course of 2007.
Contributing Partner: UNT Libraries
Experiment Station Record, Volume 86, January-June, 1942

Experiment Station Record, Volume 86, January-June, 1942

Date: 1943
Creator: U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations.
Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Puerto Rico station. Name and subject indexes start on page 879.
Contributing Partner: UNT Libraries Government Documents Department
Experiment Station Record, Volume 88, January-June, 1943

Experiment Station Record, Volume 88, January-June, 1943

Date: 1944
Creator: U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations.
Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Puerto Rico station. Name and subject indexes start on page 871.
Contributing Partner: UNT Libraries Government Documents Department
Experiment Station Record, Volume 80, January-June, 1939

Experiment Station Record, Volume 80, January-June, 1939

Date: 1939
Creator: U.S. Department of Agriculture. Office of Experiment Stations.
Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, and bibliographies. Name and subject indexes start on page 865.
Contributing Partner: UNT Libraries Government Documents Department
Experiment Station Record, Volume 92, January-June, 1945

Experiment Station Record, Volume 92, January-June, 1945

Date: 1947
Creator: U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations.
Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Puerto Rico station. Name and subject indexes start on page 881.
Contributing Partner: UNT Libraries Government Documents Department
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