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Print versionUpdated: 22 January 2020Lecture #1Intro: Course Administration, Scope andChemistry Review(Stumm & Morgan, Chapt. 1)(pp.1-4)(Benjamin, 1.1 & 1.4)David ReckhowCEE 680 #11
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BotswanaZimbabweZimbabweMozambique dfDavid ReckhowNamibiaCEE 680 #16
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Course Administration Course Syllabus Textbook: Benjamin, Water Chemistry, 2ndEdition, Waveland Press, 2015 must read, not all topics may be covered Detailed Course Outline Homework policy most graded; Projects MINEQL, review of literature Web siteDavid ReckhowCEE 680 #18
Other References1.2.3.Langmiur, Aqueous Environmental Geochemistry, Prentice-Hall, 1997.Pankow, Aquatic Chemistry Concepts. Lewis Publ., Chelsea, MI, 1991Stumm & Morgan, Aquatic Chemistry. 3rd Ed., John Wiley & Sons., 1995 4.Jensen, A problem Solving Approach to Aquatic Chemistry, Wiley, 2003. 5.7.Extra copy of 3rd edition on shelf in 3rd floor Elab II officeEby, Principles of Environmental Geochemistry, Cengage Learning,2004.Brezonik & Arnold, Water Chemistry, Oxford Univ Press, 2011 8.UM Science GB855 .J46 2003Sawyer, McCarty & Parkin, Chemistry for Environmental Engineering, McGrawHill, 2003. 6.Extra copy on shelf in 3rd floor Elab II officeUM Science GB855 .S78 1996FC On line: GB855 .B744 2011ebSnoeyink & Jenkins, Water Chemistry, John Wiley & Sons., 1980. David ReckhowUM Science QD169.W3 S66CEE 680 #19
Relation with Environmental icsChemistryDavid ReckhowCEE 680 #110
Relation with Classic Chemistry cs684Kinetics CEE 680 Water Chemistry CEE 572 & 772 Chemical Analysis CEE 684 Chemical Kinetics CEE 697z Organics in waterCEE 680 is very similar to Geo-Sci 519 (Aqueous EnvironmentalGeochemistryDavid ReckhowCEE 680 #111
Interdisciplinary sub-fields From Brezonik & Arnold, 2011David ReckhowCEE 680 #112
Others Geo-Sci 519 With lab. Chemical processes affecting the distribution and circulation of chemical compoundsin natural waters. Geochemistry of precipitation, rivers, lakes, groundwater, and oceans;applications of thermodynamic equilibria to predicting composition of aqueous systems.Behavior of trace metals and radionuclides in near surface environments. Prerequisite: Chem 111,112.David ReckhowCEE 680 #113
General Questions for Water, Soil & Geochemists What is the chemical composition of naturalwaters? Will it change with time, location? What happens to chemical species when theyenter new aquatic or non-aquatic environments? How does transport affect the chemistry? What types of reactions occur in managednatural systems? What do we need to do to make it work better?David ReckhowCEE 680 #114
Examples for Water Treatment How can we use chemistry to stop corrosion anddissolution of lead? What with the pH, alkalinity and hardness be aftermixing two different types of water e.g., groundwater and surface water How do we get the best performance from chemicalprecipitation processes e.g., coagulation, softening What can we do to optimize oxidation treatments e.g., removal of Mn, trace organic constituentsDavid ReckhowCEE 680 #115
Solving real problems Why was this water treatment plant once perfectlydesigned for treating its raw water? Why has air pollution control rendered it far lesseffective? How can it be re-designed to work well again?David ReckhowCEE 680 #116
Disinfection with Free Chlorine Required contact time increases with pHTime for 3 log Giardia inactivation (minutes)600Chlorine Residual0.4 mg/L0.8 mg/L1.2 mg/L1.6 mg/L2.0 mg/L50040010C10 CBased onUSEPA CTtables30020010005.5David Reckhow6.06.57.07.58.0pH CEE 680 #18.59.09.517
DOC removal by alum coagulation450Control (no alum)820ºC400350724 mg/L doseDOC (mg/L)630048 mg/L dose5250200496 mg/L dose3210150ManganeseRennes IV Raw Water(France) 11/19/84100Mn precipitation50Reckhow & Bourbigot (unpublished data)456078pH9101112Soluble Manganese (µg/L)9 Impacts of pH and dose
1400DBP Formation Effect of pHwith freechlorineConcentration (µg/L)1200TOX1000800600TTHM400TCAA200DCAAFrom: Reckhow &Singer, 1984(4.2 mg/L TOC, 3 days, 20mg/L dose, 20oC)02468pH1012
Flint water crisis Edwards slideDavid ReckhowCEE 680 #120
Elemental abundance in fresh waterFrom: Stumm & Morgan, 1996; Benjamin, fig 1.4; Langmuir figure 8.12David ReckhowCEE 680 #221
To next lectureDavid ReckhowCEE 680 #122
Relation with Classic Chemistry Disciplines CEE 680 Water Chemistry CEE 572 & 772 Chemical Analysis CEE 684 Chemical Kinetics CEE 697z Organics in water. David Reckhow CEE 680 #1 11. Physical Chemistry Thermodynamics Kinetics Analytical Chemistry Inorganic Chemistry Organic Chemistry. 697z. CEE 680 is very similar to Geo-Sci 519 (Aqueous Environmental Geochemistry. 680. 684
