Index Catalog // ScholarsArchive@OSU

Preparation and laboratory evaluation of stationary-phase iron-oxide-based adsorbents for removal of metals from waste waters

Creator:: May, Michael Lee
Abstract:: Several potential sorbent materials containing iron oxides were prepared and evaluated for potential to remove divalent metals from waste waters. These included a ferrihydrite-coated sand, maghemite incorporated in Dowex[Trademark] ion exchange resin, gothite and two thermally activated ferrihydrites. Attempts to prepare sorbents from steel shot by coating with ferrihydrite or...
Resource Type:: Masters Thesis
Full Text:: Sand 2-Theta 0 0 r0 Scale 06-Aug-1993 09 48 a. U O co SS 60 35 40 45 50 25 30 C

Experimental Investigation of the Effects of Embedded Rebar, Cracks, Chloride Ingress and Corrosion on Electrical Resistivity Measurements of Reinforced Concrete

Creator:: Morales, Monica
Abstract:: The effects of steel reinforcement, chloride-induced corrosion initiation, cracking and delamination on the electrical resistivity measurements using the Wenner probe technique were studied experimentally on custom-designed reinforced concrete slabs. Investigation parameters included (1) probe configurations with respect to rebar mesh, (2) rebar density, (3) epoxy coating on the rebar, (4)...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ O. Burkan Isgor The effects of steel reinforcement, chloride-induced corrosion initiation

Oregon coastal lake study : phosphorus loading and water quality implications

Creator:: Blair, Michael Stuart
Abstract:: A study of phosphorus loading and water quality implications was conducted for the Oregon coastal lakes. The study was based on existing data for lake total phosphorus concentrations and for watershed land uses. A phosphorus mass-balance model was developed to predict lake total phosphorus concentrations from estimated phosphorus loading from...
Resource Type:: Masters Thesis

Adsorption of hexavalent and trivalent chromium to a clayey silt soil : batch kinetic and equilibrium studies

Creator:: Bean, Gregory R.
Abstract:: Chromium, an element of widespread use, is toxic in some forms. Improper disposal of waste chromium products has resulted in contamination of many sites throughout the United States, including the United Chrome Products Superfund site in Corvallis, Oregon. A better understanding of chromium chemistry is needed to facilitate the remediation...
Resource Type:: Masters Thesis
Full Text:: 0 02- 00- O. 1.0 X I04M b. 1.0x10 -3M c. 60 x 10-3M I. HCr04- 2. CrO4a 3. H2Cr04 4. Cr2072 10

Investigation of Iron Passivity and Chloride-induced Depassivation in Alkaline Electrolytes using Reactive Force Field Molecular Dynamics (ReaxFF-MD)

Creator:: Dormohammadi, Hossein
Abstract:: The corrosion and passivity of iron (and carbon steel) in media with different alkalinity as well as iron depassivation have been studied extensively using electrochemical methods and nano-scale surface characterization studies. The electrochemical techniques provide valuable information about the average electrochemical behavior of relatively large metal surfaces, typically in centimeter-square...
Resource Type:: Dissertation
Full Text:: : ____________________________________________________________________ O. Burkan Isgor The corrosion and passivity of iron (and carbon steel) in media with

Estuarine sediment controls on trace metal distributions

Creator:: Davies-Colley, Robert J.
Abstract:: Sediments are the major compartment in aquatic environments for many materials of toxic or nutrient concern. The lack of knowledge of the phase associations of toxic metals in sediments is the largest deficiency in our understanding of the environmental hazard posed by metal contamination. This study examined the sedimentary partitioning...
Resource Type:: Dissertation
Full Text:: of chemical species. { } Braces. Denote mass or areal concentration of solid phases. o /oo Parts

Modeling and Finite Element Analysis of a Standard Concrete Canoe

Creator:: Stache, Stephanie S.
Abstract:: This thesis project provides a guiding framework for the structural analysis portion of the National Concrete Canoe Competition (NCCC). Step-by-step instructions on how to 3-dimensionally model a “standard” sized concrete canoe in AutoCAD Civil 3D, import the model into SAP2000, and proceed to analyze the canoe with the SAP2000 finite...
Resource Type:: Honors College Thesis
Full Text:: : Thomas Miller This thesis project provides a guiding framework for the structural analysis portion

Multi-hazard Damage and Loss Assessment of Bridge Networks

Creator:: Burns, Patrick O.
Abstract:: The overarching objective of this study is to examine and compare the vulnerabilities of bridges combining effects of earthquake-induced ground shaking, ground failure (e.g., landslides and lateral spreading), and tsunami inundation. A parametric study is performed to understand the sensitivity of economic loss and traffic capacity with respect to the...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Patrick O. Burns for the

Assessing Durability of Concrete and Ettringite Accelerated Cementitious System

Creator:: Sarkar, Anika T.
Abstract:: The goal of the first part of this project was to investigate the influence of aggregate source and entrained air on the transport properties of concrete. Currently, there are several ASTM standards available that provide systematic procedures to evaluate mass transport properties of concrete. ASTM C642-13 (ASTM 2013), often referred...
Resource Type:: Capstone Project
Full Text:: family. I would also like to thank my committee members, Dr. O. Burkan Isgor and Dr. Erdem Coleri, for

Evaluation of the Effect of Chloride Ingress and Freeze-Thaw Cycles on Electrical Resistivity of Reinforced Concrete

Creator:: Rodriguez Matiz, David Esteban
Abstract:: Performing bridge inspections can be a very daunting task for every department of transportation (DOT) in the country. Because the leading cause of deterioration in reinforced concrete bridge decks is corrosion of the steel reinforcement, the ability to detect the concentration of corrosion-causing chlorides in the concrete, using a non-destructive...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________________ Jason H. Ideker O. Burkan Isgor Performing bridge inspections can be a very

ScholarsArchive@OSU

Preparation and laboratory evaluation of stationary-phase iron-oxide-based adsorbents for removal of metals from waste waters

Experimental Investigation of the Effects of Embedded Rebar, Cracks, Chloride Ingress and Corrosion on Electrical Resistivity Measurements of Reinforced Concrete

Oregon coastal lake study : phosphorus loading and water quality implications

Adsorption of hexavalent and trivalent chromium to a clayey silt soil : batch kinetic and equilibrium studies

Investigation of Iron Passivity and Chloride-induced Depassivation in Alkaline Electrolytes using Reactive Force Field Molecular Dynamics (ReaxFF-MD)

Estuarine sediment controls on trace metal distributions

Modeling and Finite Element Analysis of a Standard Concrete Canoe

Multi-hazard Damage and Loss Assessment of Bridge Networks

Assessing Durability of Concrete and Ettringite Accelerated Cementitious System

Evaluation of the Effect of Chloride Ingress and Freeze-Thaw Cycles on Electrical Resistivity of Reinforced Concrete

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