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Transcript
OREGON STATE UNIVERSITY ENVE 431/531 Winter 2003 Transport and Fate of Organic Chemicals in Environmental Systems 4 Credits, Lectures M,W,F. 10:00-10:50, Apperson 301 Recitation Thurs. 10 -11:50. Apperson 301 Texts: Required: Water Quality - Tchobanoglous and Schroeder Recommended (531) Environmental Modeling - Schnoor Valley Library Reserve: Chemistry for Envir. Engineering – Sawyer, McCarty, Parkin Course Web Site: Blackboard: http://my.oregonstate.edu/ Instructor: Dr. Lewis Semprini email [email protected] Office: Merryfield Hall 204C; Phone 737-6895; Office Hours: MW: 3 to 5 p.m. TA: Sarun Tejasen, email [email protected] 104 Merryfield Hall Office Hours: Tu and Thurs: 2:00 to 4:00 CLASS SCHEDULE READING ASSIGNMENTS _________________________________________________________________________________________ DATE TOPIC Chemistry for Environmental Water Quality Engineering Envir. Modeling _________________________________________________________________________________________________ Jan. Jan Jan Feb 6 8 10 15 17 22 24 27 29 30 31 3 7 10 12 14 17 19 21 24 26 Introduction 1-29 Chemical Kinetics 83-92 Transformations of Organics 271-276 Partition Progesses: Henry's Law (Liquid/Vapor) 25-26; 264-268 Sorption Soil/Water) 93-98 Multi-Media Mass Balances Fugacity Concept Handout Modeling: Material Balances Batch Reactors Midterm 1 Batch Reactors with Multiple Phases Completely Mixed Reactors (Steady-State) Completely Mixed Reactors (Non-steady-state) Transport at Interfaces (Two-Film Theory) Completely Mixed Reactors (Lakes) Lakes (Continued) Rivers (BOD-model) 527-544 Rivers (DO-Sag) River (DO-Sag cont) Rivers Trace Chemicals Dispersion in Rivers 231-247 1-29 94-110 305-31 122-123 322-327 310-312 327-329 336-347 248-249; 306-309 35-42 267-276 73-80 311-322 270-275; 385-386 387-399 106-121 337-351 330-336 347-365 82-87 232-243 351-355 243-258 52-56 Feb Feb March March March March March March March 27 28 3 5 7 10 12 14 20- Midterm 2 Dispersion In River (cont:) Mixing in Rivers and Estuaries Ocean Outfalls Water Quality Lakes and Reseviors Water Quality in Groundwater Systems Water Quality in Groundwater Sytems Cont: Wrap-up Final Exam 12:00 pm 351-353 353-363 363-377 383-399 405-415 415-435 281-294 347-365 455-470 470-484 ENVE 431/531 Course Objectives The objective of the course is to develop an understanding of processes that control the fate, distribution, and transport of organic chemicals in the environment. Kinetics and partitioning processes as they relate to environmental contamination will be reviewed. Processes that control the equilibrium distribution of contaminants in environmental compartments, such as air, water, and sediments, will be discussed. Models for batch, completely mixed, and plug flow reactors will be developed. Theory for the mass transfer between phases including: 1) partitioning; and 2) transport processes of diffusion, advection and dispersion, will be developed. Kinetic concepts and mechanisms for chemical and biological transformations in the environment will be presented. Simple analytical models for lakes, rivers, and estuaries, which illustrate processes of transport and fate, will be developed. Transport and fate of chemicals in groundwater systems will also be discussed. We will also learn to use the computer model: AQUASIM 2.0 that will permit us to construct environmental models for lakes and rivers. Course Prerequisites ENVE 321and ENVE 421 Format: Grade Based on: Homework (an assignment each week) Midterms Group Project Final ENVE 431 20 % 40% 40 % ENVE 531 15 % 35 % 15 % 35 % The ENVE 531 group project will involve the investigation of an environmental problem that is selected by the instructor. The group will critically analyze the problem, find scientific literature about it, and answer specific questions that are posed using methods developed in class. Learning Objectives: EnvE 431 and Enve 531: Transport and Fate of Organic Chemicals in Environmental Systems At the end of this class, the student should be able to: LO 1: Describe fundamental reaction mechanisms and apply reaction kinetics to modeled environmental systems LO 2: Calculate the distribution of a compound in a multi-phase system based on theories of equilibrium partitioning and mass transfer between phases. LO-3: Understand how the physical/chemical properties of an organic chemical control its distribution in the environment. LO-4: Model the dissolved oxygen concentration and deficit in a river in response to BOD loading. LO 5: Mathematically model steady state and transient environmental systems, such as rivers and lakes, using first order kinetics, reactor, and partitioning theory. LO 6: Apply mass transfer, phase partitioning, and transformation kinetics to model the fate of trace contaminants in rivers. LO-7 Apply simple dispersion mixing models for rivers and estuaries. L0-8 (531 Students) Apply knowledge of processes and modeling skills to determine the fate of a contaminant in a complex real world setting in a group class project.