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Research and Outreach

Trace Organic Analytical Laboratory

The Trace Organic Analytical Laboratory (TOAL) conducts high quality analyses for organic chemicals of environmental concern. The chemicals currently include the polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polychlorinated biphenyls (PCBs), planar PCBs, polycyclic aromatic hydrocarbons (PAHs) and organochlorinated pesticides (OCPs). The lab has performed analyses on soil, sediment, papermill sludge, incinerator ash, water, fish as well as avian and mammalian wildlife.

The Laboratory was created in 1986, originally as a part of the Chemical Toxicology Research Center (CTRC), and is now housed in the Natural Resources Research Institute (NRRI). It exists to provide analytical support to environmental research projects within the University and to provide state-of-the-art analyses for state agencies and other units outside the University. The Laboratory is an integral part of a growing research program in environmental science & engineering within the University. Instrumentation includes a GC/MS (HP 5890II with 5971A MSD) used for PCDD, PCDF and PAH analysis and a GC (HP 5890A) with two electron capture detectors for PCB & OCP analysis. Methods used for PCDDs & PCDFs follow closely those developed in the U.S. EPA for the National Dioxin Study. PCB methods follow closely those described in EPA method SW 846. The laboratory seeks diligently to maintain high standards of quality assurance and control (QA & QC). Every effort is taken to incorporate recent advances in methodology and ensure that acceptable levels of detection are attained.

Contact Dr. Keith Lodge for further information.

Process Modeling & Simulation

Numerical models are developed for modeling chemical processes involving fluid flow, heat and mass transfer with chemical reaction. The mathematical models are solved with the aid of sophisticated software on personal computers and UNIX workstations. Modeling and simulation software include CFX, HYSYS, Superpro Designer, MathCAD, Matlab, MULTIPHYSICS, Matlab, Mathcad, Visual BASIC and FORTRAN, JMP, C++.

Computational Fluid Dynamics (CFD) is used as a numerical tool for modeling fluid flow, heat transfer, and reactions in fluid/solid systems such as porous beds, membranes, reactors, and channels. The department maintains UNIX and PC workstations for numerical modeling.

Contact Dr. Richard Davis for more information.

Mass Transfer Laboratory

The Mass Transfer Lab (MTL) is located in the Engineering Building on the UMD campus. Transport phenomena and physico-chemical properties of fluid systems are researched in the Mass Transfer Laboratory. A laminar liquid jet is used to measure rates of gas aborption into liquids under conditions of small contact times on the order of a millisecond. This device has the advantage that liquid hydrodynamic effects are negligible and fast reacting systems may be studied. For slower absorbing or reacting systems, a Parr mini-reactor is available. An Reactive System Screening Tool calorimeter is used to for safe reactor design.

Capabilities for measuring physical, chemical and thermodynamic properties are available in this laboratory. Specific properties include density, viscosity, diffusivity, reaction rate constants, partition coefficients, and vapor-liquid equilibrium.

Analytical equipment include a GCMS, UV-Vis spectrophotometers, HPLC with spectrophotometer and refractive index detectors, electronic analytical balances, surface tensiometer, Z-potentiometer, particle size analyzers, and centrifuges.

Contact Dr. Richard Davis for more information.

Chemical Engineering Training & Education

The faculty in the department of Chemical Engineering regularly provide short courses, workshops, and seminars as part of our ongoing effort to support regional businesses and schools. Examples of titles of short courses include: Engineering Statistics, Hazardous Waste Minimization, Air Pollution Control, Process Modeling & Simulation, Engineering Economics, and FE/EIT Review.

For further information, please contact us.

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Last modified on 07/09/13 12:39 PM
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