Browsing by Author "Harper, Willie"

Now showing items 1-8 of 8

Decreasing Lead Bioaccessibility In Soils With Phosphate Amendments

Moseley, Rebecca (2006-08-15)

Ingestion of Pb-contaminated soil has been proposed as a primary exposure pathway for elevated blood Pb levels in young children (Dudka and Miller, 1999). Children are often exposed to soils contaminated with toxic metals ...

Destruction of Perchlorate and Nitrate by Stabilized Zero-valent Iron Nanoparticles and Immobilization of Mercury by a New Class of Iron Sulfide Nanoparticles

Xiong, Zhong (2007-12-15)

This research compares representative standard strong-base anion (SBA) and weak-base anion (WBA) exchangers, a bifunctional resin (A-530E), a class of polymeric ligand exchangers (PLE’s), and an ion-exchange fiber (IXF) ...

The Effects of Sulfide on Pulp and Paper Wastewater Color Reversion

Esty, Jessica (2005-12-15)

More and more concern is being given to the aesthetics of wastewater, specifically the color of the resulting effluent. The underlying causes of colored wastewater suggest incomplete pollutant removal and unsuccessful ...

Immobilization of Mercury Using Iron Sulfide Minerals

Bower, Julia (2007-08-15)

Mercury is a pervasive pollutant that has caused environmental and health problems throughout the world. Numerous industries including coal-fired power plants and chlor-alkali plants have discharged mercury into the ...

Numerical Model Evaluations of Cumulative Contraction Scour at a Bridge Site with Cohesive Soils

Harris, Dustin (2005-08-15)

The objective of this study was to perform 2-Dimensional numerical contraction scour calculations at an actual bridge site with cohesive soils. The 2-D model used in the analysis was the Finite Element Surface Water ...

Selective Removal of As(V) from Water by Polymeric Ligand Exchange and Engineered Treatment of Spent Regenerant

An, Byungryul (2006-08-15)

Arsenic introduced by natural or human activities into drinking water sources has been a challenging issue around the world. In the western United States, high arsenic concentrations in drinking water have caused serious ...

Sorption and Biodegradation of Pharmaceutical Compounds in Biological Wastewater Treatment Process

Yi, Taewoo (2007-12-15)

This study was performed to investigate the removal mechanisms of pharmaceutical compounds (PhACs) in biological treatment processes. The removal efficiencies and byproducts of three model compounds including 17a-ethinylestradiol ...

Theromdynamics of Steroid Estrogen Sorption to Activated Sludge

Xu, Kai (2008-12-15)

Sorption is an important mechanism for removal of 17a-ethinylestradiol (EE2) in biological wastewater treatment. In an effort to deepen our understanding of this process, this work investigated the underlying thermodynamic ...