1 / 18

Tillämpad vattenkemi 2010 Applied Aquatic Chemistry 2010

Tillämpad vattenkemi 2010 Applied Aquatic Chemistry 2010. Jan-Olle Malm Lars Stenberg Deptartment of Chemistry Per Warfvinge Department of Chemical Engineering. After the course, you should:. understand key chemical processes in surface waters and groundwaters

roana
Download Presentation

Tillämpad vattenkemi 2010 Applied Aquatic Chemistry 2010

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tillämpad vattenkemi 2010Applied Aquatic Chemistry 2010 Jan-Olle Malm Lars Stenberg Deptartment of Chemistry Per Warfvinge Department of Chemical Engineering

  2. After the course, you should: • understand key chemical processes in surface waters and groundwaters • be able to apply your knowledge about chemical equilibrium on real-world problems • have developed your computation skills • be able to interpret chemical phenomena and express your ideas in writing

  3. What we do • Basic chemistry – lectures by Jan-Olle Malm • Applied Water Chemistry – lectures by Per Warfvinge • Exercises and preparation of a workbook • Labwork • The CO2/water system • Chemical analyses and charge balance • Microbial redox reactions

  4. Perspective: Water chemistry as a result of complex interactions

  5. National environmental goals: Atmosphere Water • Limited climatic change • Fresh air • Only natural acidification • High quality groundwater • Vital lakes and streams • Vibrant wetlands • Oceans in balance • No eutrophication • Diverse forests • Rich farmland • Great mountains • Good built environment • Safe radiation • Protective ozone layer

  6. Links to previous courses • Hydrology and aquatic ecoogy • Links between chemistry and biology • Growth limiting element, carbon sources • Physics • Balances, thermodynamics, computations • Geology • Link bedrock/soil to water quality • Open and closed aquifers • Themodynamics • Equilibrium concept, ”free energy”, kinetics • Mathematics • Algebraic equations (dependence, rank)

  7. …and further on • Statistics W3 • Computational skills • Masstransport W3 • Modeling of dynamic systems • Chemistry in a context • Contaminant transport in groundwater • Environment and Management W3 • Link environmental issues - environmental legislation • Environmental assessment • Degree project and – work!

  8. What does an Environmental engineer need to master? • Processes dealing with the pH and redox-conditions in water • Gas-water interactions • Acid-base equilibria • Dissolution and precipitation reactions • Reduction - oxidization reactions • Less important • Phase distribution equilibria • Complexing

  9. Key chemical concepts • Equilibrium • Equilibrium equations • Charge neutrality • Charge balances

  10. Water chemistry units • mol/L • Used for equilibrium/kinetic calculations • mg/L • Commonly uses for N and P • eq/L or molc/L • equivalents/L = charge * mol/L • Commonly used for comparisons and trend analysis • Can be used to set up charge balances

  11. The Charge Balance - Stream water from the Kålmården area

  12. Most important acid-base system in nature: CO2-water

  13. Water chemistry: First week

  14. Sensitivityof aquatic species to pH

  15. Key chemical concepts • Equilibrium • Equilibrium equations • Charge neutrality • Charge balances

  16. Global reservoirs of water

  17. Laboration 1:Equilibrium gas/liquid • CO2 in N2 is bubbled through ”pure” water • Experimental determination of gas-liquid equilibrium constant • When: Wednesday - Thursday • Where: Level 0, labs close to Ideon • Staff: Jenny Axén Mårtensson, Malin Rosenberg

  18. Globally most common ions in surface waters/ground waters

More Related