timer Asked: Apr 24th, 2020

Question Description

its a project about in chemical engineering but its more about environmental . i should create a unique scenario where a chemical contaminant transfer through air(1) and water(2) and sediment(3) and aerosol , and the source of it . and it should be interesting to solve in real live . by using Level III model link in the files below about the project instructions

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Report Rubric for Fate and Transport Project Total = 16 points (4 for creativity, 4 for appropriateness, 4 for input specifications and 4 for writing) Creativity: 4. This is a problem someone would want to solve and is interesting. 3. This is a problem someone would want to solve but is not particularly interesting. 2. This is interesting but not a problem someone would want to solve. 1. This is neither interesting nor a problem someone would want to solve. Appropriateness: 4. The scenario can be approximated as steady state and complete mixing within each compartment is a reasonable assumption. 3. This can be approximated as steady state but the assumption of complete mixing (made by the software) isn’t realistic. 2. Complete mixing is a realistic assumption but the scenario can’t be approximated as steady state. 1. The scenario can’t be approximated as steady state and complete mixing is not a realistic assumption. Specifications: 4. Input data (e.g. rain, fish, advective flows, etc) was obtained from cited sources and is reasonable. 3. Input data is reasonable but was guestimated. 2. Default values from the program were used as input data. 1. Input data was made up and the values are not realistic. Writing: 4. The report is organized nicely. Proper grammar and correct spelling are used. All requested sections are present. 3. One of the above items is sub-par. 2. Two of the above items are sub-par. 1. All of the above items are sub-par. ECH 4931 Chemical Fate and Transport - Project Spring 20 For this project, you will use the Level III Model (Version 2.80) from the Canadian Environmental Modeling Center to define and solve a problem of your own design. Instructions for downloading the Level III model are given below. The Level III model is much more sophisticated than the Level I model you ran earlier – it does not assume compartments are in equilibrium. In addition, it takes degradation by chemical reaction into account and allows for in-flows of contaminant both by direct emission and by advection (flow into the environment with air, water, fish, etc.). The model is limited to steady state so problems treated are limited to those where there is a continuous source of contamination. Specific Tasks (1) Download and install the Level III program. You can get the program by going to: Go to the bottom of that page and click on “Download”. Follow the instructions to download and install the software. (2) Choose a contaminant from the drop-down list of chemicals in the “Chemical Properties” program data bank. Alternatively, you may add your own chemical to the databank. Do some research via the Web to find what the chemical you choose is used for and what its common emission sources are. (3) Define a plausible scenario to model emission of that chemical into an environment. This would include specifying an emission rate for the contaminant, specifying whether it is emitted into air, water or soil, and specifying which compartments are present in your environment and what their volumes are. You will also need to specify advective flows of any phases (air, water, fish, etc.), that flow into and out of your environment. (4) Run your scenario with the Level III program. Record the concentrations and amounts of the contaminant in each compartment, the total amount of the contaminant in the environment at steady state and the residence time. (5) Write a report and prepare a 10 minute presentation to be given during the last two weeks of class. Report (Due on Wed, April 29): Your report should be typewritten and include the following sections: (1) Abstract: A brief (about half of a page) synopsis of the scenario you developed and the basic results. (2) Introduction: Briefly describe the contaminant you are studying – what it is used for and what the common emission sources are. Describe your purpose in doing this simulation. What is the main question you would like to answer? For instance, do you want to see if the contaminant concentration in air exceeds an EPA standard? Do you want to know where the bulk of it goes so that you can focus on a clean-up? Do you want to know the concentration in a river leaving your environment? (3) Scenario: Describe your scenario, including how you selected your emission rate, whether there were background concentrations, what compartments you included in your environment and how you selected each of their volumes, and what advective flows you included and how you selected their flow rates. (4) Results: Present in a short table the results requested in point (4) under specific tasks. You may include the diagram that is output from the Level III program but do NOT include tables of tabular output from the program. You may place these in an appendix. (5) Discussion: Discuss the results in terms of the persistence of the contaminant in the environment, where it is likely to be present in the highest concentrations, and where it is likely to be present in the largest amounts. Tie the results to the main question you want to answer. (6) References: Include any references you used to obtain information for your project. (7) Appendices: Put all the tabular output here that the program generates. Presentation (made in class on April 27 and 29): Prepare a 10 minute power point presentation of your project. It is reasonable to follow the same basic structure as in your report. All members of the group should speak during the group presentation. Note: Your project grade will be based primarily on the creativity you use to create your scenario, the reasoning you use to select the various inputs to the program, and whether the scenario is appropriate for the assumptions made by the software. In addition, a portion of your grade will be based on the organization and grammar of your report and the organization and oral presentation skills exhibited during your presentation. All members of your group will receive the same grade on the project. Other You will work in groups of 3 or 4 of your own choosing. Each group should give me a list of its members by Mon, April 6. Each group should describe its scenario to me by Mon, April 13. You don’t have to have the details worked out at that point – just the basic scenario. ...
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