sustainable chemistry and industrial ecology t.e. graedel yale university
TRANSCRIPT
Sustainable Chemistryand
Industrial Ecology
T.E. Graedel
Yale University
The Chemical Industry Approach to Chemistry and the Sustainable
Enterprise:
“Responsibility”
(Responsible Care, Responsibility Reports, etc.)
The Chemical Industry Vision of “Responsible”
Inputs
Cheap
Community interactions
Cordial
EmissionsLow
Products
Lots and lots
GlaxoSmithKline CO2 Emissions
GlaxoSmithKline VOC Emissions
The Chemical Industry Vision of “Responsible”
Inputs
Cheap
Community interactions
Cordial
EmissionsLow
Products
Lots and lots
Expanding the Scope ofResponsible Action
xxMH5M1430N
2
29
MaterialsPreparation
MaterialsPreparation
VirginMaterialsExtraction
Discard
Refurbish? Ship Package
Stages of the Life-CycleStages of the Life-Cycle
CustomerUse
51
5455 3
Reactant #2
Mfr.
Reactant #1
Mfr.
Product
Mfr.
Sludge(treated)
Liquid Fertilizer
Farms
Cement;roads
Fishfarming
Water
Water
Water
Fly ash
Heat
ScrubberSludge
Gas
Steam
Ste
am
Sulfur
A-S Bioteknisk Jordrens
Sludge
Ste
am Coo
ling
wat
er
Statoil Refinery
LakeTissø
Gas
Was
tew
ate
r
Yeast slurry Recovered nickel and vanadium
Kalundborg, DK: Industrial Symbiosis Pathways
Asnaes PowerAsnaes PowerStationStation
Pharmaceutical
Municipality of Kalundborg
District heating
Wall-board Plant
Responsible Actionmay not equalSustainability
Sustainability - Meeting the needs of people
living on Earth while nurturing and restoring the planet’s life
support systems
- Board on Sustainable Development, 1999
What is it that we want to sustain?
For whom?
For how long?
What should be sustained?
• Environmental scientists: Earth systems
• Ecologists: Ecological systems
• Economists: Earth products (ores, minerals)
• Humanists: Human systems
What does the chemical industry want to sustain?
• The right to operate
• Feedstocks
• Suppliers (process equipment, catalysts, etc.)
• Customers
Sustainability Challenge #1
Everything is connected to
everything else, so sustainability
is a group project
From
Customer
To
Customer
Various
Process And Product Reuse Options
METAL MINING
METAL SMELTING &
REFINING
METAL FABRICATION
NATURAL GAS EXTRACTION
COAL MINING
POWER GENERATION
PLASTICS FABRICATION
PRODUCT ASSEMBLY
PACKAGING & SHIPPING
RECYCLING
INORGANIC MINERAL
EXTRACTION
INORGANIC CHEMICALS,
SAND & GLASS
SYNTHETIC ORGANIC
CHEMICALS
ELECTRONIC FABRICATION
PETROLEUM REFINING,
PETROCHEMICALS
PETROLEUM EXTRACTION
EXTRACTION MATERIAL PROCESSING
INTERMEDIATE PRODUCT MFR.
IfINAL PRODUCT MFR.
PRODUCT DELIVERY
The Sector Sequence
AGRICULTURE
FOODPROCESSING
FORESTPRODUCTS
CONSTRUCTION
TEXTILES
Sustainability Challenge #2
In most cases, the limits we
are approaching remain uncertain
Lake Powell, CO before and after drought
Sustainability Challenge #3
Notwithstanding our difficulties in determining limits, there are increasing signs
that our society and the planet
is approaching limits
Limits to Feedstocks: Crude Oil Price, $/bbl
Limits to Emissions: Melting Glaciers
The Copper Cycle: Studying Human Use of Resources
0
2
4
6
8
10
12
14
16
1700 1750 1800 1850 1900 1950 2000
Year
Global Copper Use, 1700-2000(T
g/y
ear)
IMPORT/EXPORT
ORE ENVIRONMENT
PROCESS-ING
FABRICA-TION
USE WASTEMGT.
IMPORT/EXPORT
ORE ENVIRONMENT
PROCESS-ING
FABRICA-TION
USE DISCARDMGT.
STAF Project© Yale University 2004
Data Sources
DataArchive
Databases- UN Comtrade- ...
Trade Organizations- ICSG- ...
Personal Contacts- auto industry- ...
Periodicals- Minerals yearbook- ...
120OldScrap
LandfilledWaste,Dissipated
180
Landfill +200
Collection,SeparationIncineration
Import/Export
200
Old Scrap
Discards
500
+120
Japan Waste ManagementWM
© STAF Project, Yale University
Units: Gg/yr
Japan Copper cycle: One Year Stocks and Flows, 1990s
System Boundary Japan
280
New Scrap
18 Slag
Cathode
0.3
Tailings
2
Concentrate
1100
Blister
1
1200
80
34
120
Ore
Semis,finished Products
500
Prod. Cu
950
120Old
Scrap
200
Old Scrap
LandfilledWaste,
Dissipated
180
Discards
500Prod. Alloy
240
Cathode
170
NewScrap,Ingots
1805216
ProductionMill, Smelter,Refinery 7
Stock
Use
Stock
700
Lith. -2 Environment +200
Fabrication &Manufacturing
WasteManagement
Import/Export -830
© STAF Project, Yale University Units: Gg/yr
Zambia’s Copper Cycle: One Year Stocks and Flows, 1994
Units: Gg/yr
China’s Copper Cycle: One Year Stocks and Flows, 1994
Units: Gg/yr
Computing Resource Stockin Use: Copper in Cities
Quantifying stock per capitaStep 1: Determine content of
major reservoirs
Typical auto – 21 kg Cu
Typical house – 200 kg Cu
Quantifying stock per capitaStep 2: Multiply by the number of units
in the reservoirs
Copper Stock per capita
170 kg Cu 35 kg Cu
North America Beijing
Copper Stock and Copper Need
170 kg Cu 170 kg Cu
North America Beijing
Global need
1.7 Pg Cu
Limits to Materials: Copper Stock and Copper Supply
170 kg Cu 35 kg Cu
North America Beijing
Global need Global resource
1.7 Pg Cu 1.6 Pg Cu
Final Thoughts
• “Responsible” action is a good thing
• Sustainability demands a broader perspective, and probably more effort, than responsible action
• The quantification of sustainability is a work in progress