VERSITy FEB 20114 UNI BT SOIL - 3 GAS – WATER EQUILIBRIUM Air Water absorptiondesorption X(g) X(aq)

Slides:

Advertisements

Similar presentations

Solution, Acids and Bases

Advertisements

Man affects his Environment through the change of:

– Forensic Geology The Woburn Toxics Case A Civil Action.

Gas Solubilities Henry’s Law: [A]equilibrium = SA · pA

 Homogeneous mixtures  Can be solid, liquid or gas  Aqueous solution Water that contains dissolved substances.

Investigation 9A What does it mean to dissolve? Solubility.

Solutions Ch. 11.

Unit 1 Lesson 1, Water and Its Properties. Watered Down What are some of water’s roles on Earth? Water shapes Earth’s surface and weather, and it is vital.

HOW AND WHY DO SUBSTANCES DISSOLVE IN WATER? Learning Targets: *I can explain aqueous solutions and the role of water as the universal solvent. *I can.

WHY US?  BEST QUALITY AND SERVICE AT THE LOWEST PRICE.  IF YOU HAVE A PANAMINIAN FLAG, WE OFFER 15% DISCOUNT.  WE DELIVER TO BOTH OCEANS, ATLANTIC.

* Many useful products are made from mixtures * Glass is unique- it looks and acts as a solid but has the properties of a fluid; is made by heating sand.

Karst Chemistry I. Definitions of concentration units Molality m = moles of solute per kilogram of solvent Molarity [x]= moles of solute per kilogram.

Organic Compounds 1. Organic Compound Properties In general, not very soluble in water Uncharged or weakly charged Can exist as dissolved, solid, or gaseous.

Goals  Determine which chemicals present (or potentially present) in the Lake Champlain basin would cause detrimental effects  Determine the pathways.

Conservative and Reactive Solutes Conservative do not react with soil / groundwater Chloride is a good example Sorbed onto mineral grains as well as organic.

What is a solution? The amount of a substance that dissolves in a given volume of solvent at a given temperature A solution in which the solvent is water.

Mar 27Ch 4 Mar 29Ch 5 Q 7 Apr 3Ch 5 (Review) Apr 5Exam 2 (Ch 3, 4, and 5) (HW 7 originally due) Apr 10Ch 5HW 7 actually due here!! Apr 12Ch 7Q 8 Apr 17Ch.

Water Pollutants and their Sources

Pollution and Degradation

Atmospheric Deposition of Air Toxics Matt F. Simcik Division of Environmental and Occupational Health School of Public Health University of Minnesota.

Environmental Processes Partitioning of pollutants 3.i Sorption involving organic matter (between air/soil and water/soil)

Solutions The inward pull that tends to minimize the surface is called surface tension. Surface tension acts like a thin skin. A liquid that has strong.

Human Impact on the Environment Minerals in Water.

Scheme of the equilibrium Environmental Compartments Model.

Water Waste Treatment.

Laboratory 14: CRSS/FANR 3060 Spring Urban soils often contaminated with metals (Pb) Refining, smelting (aerial deposition) Plumbing (Pb solder)

Chapter 14: Solutions Many of the forces we’ve talked about occur between ions/molecules in solutions Definition: A homogeneous mixture (only one phase)

When a substance dissolves, it goes into solution. A solution is a mixture in which the particles of one substance are evenly mixed with the particles.

Conceptual Physical Science 5th Edition Chapter 16: MIXTURES

Fundamental processes in soil, atmospheric and aquatic systems 2(ii) Partitioning.

Solubility and Solutions. Water is the most abundant liquid on the earth and is necessary for all life. Because of water's great dissolving properties,

Solutions. Definitions  Solution -  Solution - homogeneous mixture Solvent Solvent - present in greater amount~ does the dissolving. Solute Solute -

1 Section 5: Limitations. 2 ISCO Limitations  Saturated Zone vs Unsaturated Zone  Chemistry  CoSolvents  Geology /Geochemistry/Hydrogeology  NAPL.

Chapter 22 Solutions.

Acids and Bases (3).  Bases are the oxides or hydroxides of metals.  Contains either oxide ions (O 2- ) or hydroxide ions (OH - ) BaseFormulaIons present.

Phase Interactions Objective –to understand the chemical principles, significance and application of Phase changes in Environmental Engineering. Phase.

Solution A solution is a homogenious mixture of a substance mixed in a second substance. An alloy is a solution of metals evenly mixed together, an example.

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Addison-Wesley. Chapter 16: MIXTURES.

I like nonsense, it wakes up the brain cells. Fantasy is a necessary ingredient in living, it's a way of looking at life through the wrong end of a telescope.

Welcome to Jeopardy Your Favorite Host: Ms. Ings Today’s Topic: 1.C. Solubility.

Fresh lemonade is a solution of water, lemon juice, and sugar.

Chemistry Review Unit 1C & D Investigating the Fish Kill and Cleaning Water.

Solutions. Occur in all phases u The solvent does the dissolving. u The solute is dissolved. u There are examples of all types of solvents dissolving.

Solutions. Occur in all phases u The solvent does the dissolving. u The solute is dissolved. u There are examples of all types of solvents dissolving.

Matter and Change Chapter Nine: Acids, Bases and Solutions

Chapter 5 (CIC) and Chapter 18 (CTCS) Read in CTCS Chapter Problems in CTCS: 18.33, 35, 37.

Unit 1 Lesson 1 Water and Its Properties Copyright © Houghton Mifflin Harcourt Publishing Company.

VERSITET SOIL CONTAMINATTION APRIL 2014 UNI INDOOR CLIMATE RISK ASSESSMENT.

Human impact on the Environment

Heavy metals in the soil environment

VERSITy 16. OCTOBER 2012 UNI PEDER MARIBO GROUNDWATER CONTAMINATION AND TREATMENT.

Concentration and Solubility. Objectives  L Describe how concentration is measured.  L Explain why solubility is useful in identifying.

Solubility Chapter 17 & 18. Solutions  Solutions are made of a solute and a solvent.  In this chapter we are concentrating on solutions of water. 

Chapter 9 Air Pollution Pollutants in the air Smog, heat, light, and noise Acid Rain Climate Change.

BTMIL4 Heavy metals in the soil environment. Metal Deficiency Normal growth Toxicity Heavy metal and effect on plants grown in substrate solution. The.

Food environment Relations between and. FOOD CHAIN.

1 The Chemistry… …of WATER?. 2 Water is a CHEMICAL? Water is one of our most abundant chemicals Chemical Formula is H 2 O most recognized of all the chemical.

Pollution & Clean-up. Think Tank What do you think is happening in this picture? Take 2 minutes to write down your answer on the top or back of your notes.

PURE AND IMPURE WATER B.12. Do you drink chemically pure H 2 O? What is the difference between chemically pure versus “clean” H 2 O?

WELCOME BACK u Pick up a Solutions Packet Open to the notes page & copy down the essential question EQ: How can solutions be classified? How do you read.

Groundwater Pollution Week 04 – Types of Pollution 2.

APES REVIEW #4 Pollution.

BIOLOGY FORM 4 THURSDAY 02 OCTOBER, 2014.

Physical Science Review #5

Environmental Engineering

Groundwater Pollution

I like nonsense, it wakes up the brain cells

Solution: one substance dissolved in another

Table 6. Bioaccumulation factors for heavy metals in rice crop

Presentation transcript:

VERSITy FEB UNI BT SOIL - 3 GAS – WATER EQUILIBRIUM Air Water absorptiondesorption X(g) X(aq)

GAS – WATER EQUILIBRIUM PM FEB | 2010 Polarity & distribution coefficients Gas (air) Water (dissolved) KHKH KdKd Particles (sorbet)

GAS – WATER EQUILIBRIUM PM FEB | 2010 POLAR Hydrophilic High water solubility NON POLAR Hydrofobic (lipophilic) Low water solubility Contact angle Grease & oil Charged subst (ions) Soap / detergent

GAS – WATER EQUILIBRIUM PM FEB 2014 LOTUS EFFECT 4 | 2010

GAS – WATER EQUILIBRIUM PM FEB PHASE DISTRIBUTION K oc and K ow relationship, From Curtis et al. K d = C x,s /C x,aq K d = K OC ·f OC (K OC = K d /f OC ) K OW = C x,oct /C x,aq

GAS – WATER EQUILIBRIUM PM FEB 2014 ”ABDULS FORMULA” Calculation of K d based on K OW and f oc : Log(K d ) = 1.04·log(K OW )+log(f oc ) – 0.84 Valid for log(K OW ) 1 % Ref: Miljøstyrelsen (2002) Guidelines on Remediation of Contaminated Sites. (p248) 6

GAS – WATER EQUILIBRIUM PM FEB 2014 A BALLOON WITH ATMOSPHERIC AIR CONTAIN 20 PPM (VOL) CO 2. THE AIR IS HEATED AND EXPANDS. AS CONSEQUENCE OF THE EXPANSION THE CO 2 CONCENTRATION IN THE BALLOON: 1. Increases 2. Is unchanged 3. Decreases 4. I don't know... 7 CONCENTRATION

GAS – WATER EQUILIBRIUM PM FEB 2014 THE BALLOON AGAIN: WHAT HAPPENS AS CONCEQUENCE OF THE EXPANSION WITH THE CO 2 CONCENTRATIN IN MG/L ? 1. It increases 2. It is unchanged 3. it decreases 4. I don't know 8

GAS – WATER EQUILIBRIUM PM FEB SubstancesProblemSources Heavy metals (Hg, Pb, Cd…) Toxic & chronic effects Bio accumulation (strong sorption - K d ) Industry Non-point deposition: smoke, sludge and fertilizer Mineral oil products (BTX, MTBE, PAH...) Health. Taste + smell (indoor climate, water + skin contact) Gasoline stations + tanks for oil heating Chlorinated solvents (PCE, TCE..) Cancer, toxicity. Bioaccumulation (indoor climate + water) Dry cleaning Metal processing Graphic industry Pb Cr PCE BTX PAH The Usual Suspects…