20/09/2018
Environmental Management Series
CHING YERN CHEE
Assoc. Professor
Chemical Engineering Department
University of Malaya
50603 Kuala Lumpur Malaysia
chingyc@um.edu.my
Marks
Group Assignment & Presentation 13%
Wk 13 & 14
Round Table Discussion 7%
17 Oct & 28 Nov
Quiz 1 & 2 + Tutorial 10%
Wk 4 & wk 10
1 Midterm Exam 10%
Wk 8
Final Exam 60%
1
20/09/2018
What is Environmental Engineering?
Definition: The application of science and
engineering knowledge and concepts to care
for and/or restore our natural environment
and/or solve environmental problems.
2
20/09/2018
Who does it affect?
• Everyone &
Everything!
– plants
– insects
– animals
– humans
– ecosystems
What are
environmental issues?
• Three areas:
– air quality
– land quality
– water quality
3
20/09/2018
Air Quality
Why is air quality such a
problem?
Poor air quality can lead to:
• smog
• respiratory & other illnesses
• acid rain
• global warming
4
20/09/2018
From where do air pollutants
come?
Air pollution
Air Quality
• Air pollutant: A known
substance in the air that
can cause harm to
humans and the
environment. Effects of acid rain on plants
– nitrogen oxides (NOx)
– sulfur oxides (SOx)
– carbon monoxide (CO)
– carbon dioxide (CO2)
5
20/09/2018
Climate change & other environmental issues are inter-linked
Jungle burned for
Logging in Malaysia.
agriculture in southern
Mexico
6
20/09/2018
Environmental impacts caused by
deforestation
• Burning forests and decay of wood after
logging contribute to the release of
greenhouse gases
• Loss of biodiversity
• Forests are important parts of hydrologic cycle
in nature
Mining
Chuquicamata, the largest open pit copper mine in the world, Chile
7
20/09/2018
Environmental impacts of
mining
Land/soil erosion
Formation of sinkholes,
Loss of biodiversity in the area
Contamination of groundwaters by
chemicals from the mining process and
products.
Abandoned mines can still pose safety
hazards such as deadly gases
Chemicals used for mining
Sodium cyanide for extraction of gold
Sulphuric acid for extraction of copper
from copper oxides
If these chemicals are not handled
properly, serious environmental impacts
may occur to the neighbouring
environment
8
20/09/2018
Global Warming
9
20/09/2018
Environmental Effects of
Global Warming
Melting of polar ice
Rising sea level
Spread of pests and disease
Ecological impacts (e.g. disturbed life cycle)
Energy Food
Environmental management
& Sustainability
Biodiversity
Water
10
20/09/2018
A possible way to implement?
Natural & Water Coastal
Human Induced Resources & Marine
Disasters Ecosystems
Human Health Energy Sustainable
& Well-Being Resources Agriculture &
Desertification
Weather Climate Biodiversity
Information, Variability &
Forecasting & Change
Warning
Examples
Renewable Resources Non-Renewable Resources
11
20/09/2018
Texts: Introduction to Environmental Engineering. P. Aarne Vesilind. PWS Publishing
Company.
Age of Environmentalism. J.E. de Steiguer. McGraw-Hill Publishers.
Age of Environmentalism. J.E. de Steiguer. McGraw-Hill Publishers.
12
20/09/2018
Tutorial 1
write in a paper describing your relationship
with the earth and responsibility for the
environment.
Round Table Discussion 1:
Date: 17 October 2018 ( 3 hr)
Title : Plastic Bags for packaging : To Ban or Not to Ban?
G Roles Students
1 Emcee / Chairperson/facilitators (time control) 3
2 Debate Group A: To ban plastic pacakging 4
3 Debate Group B: support the use of plastic packaging 4
4 Consumers /end user : food/general 4
5 Representatives from sellers, markets, and shops. 4
6 Petrochemical resin /plastic film manufacturers 4
7 Biopolymer resin /biofilm manufacturers 4
8 Players from Paper and Paperboard 4
9 Department of Environment : Environmental regulations/ policy makers 4
10 Government 4
11 Environmental protection agency 4
44 students = judges
13
