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EPM821S - ENVIRONMENTAL POLLUTION - MONITORING AND REMEDIATION - 1ST OPP - NOVEMBER 2023 |
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nAml BIA UnlVERSITY
OF science AnDTeCHnOLOGY
FacultyofHealthN, atural
ResourceasndApplied
Sciences
Schoolof Naturaland Applied
Sciences
Departmentof Biology,
Chemistryand Physics
13Jackson Kaujeua Street
Private Bag 13388
Windhoek
NAMIBIA
T: +264 61207 2012
F: •264 61207 9012
E: dbcp@nust.na
W: www.nust.na
QUALIFICATION: BACHELORof SCIENCE
QUALIFICATIONCODE: 08BOSH
COURSE:ENVIRONMENTAL POLLUTION, MONITORING &
REMEDIATION
DATE: NOVEMBER 2023
DURATION: 3 HOURS
LEVEL:8
COURSECODE: EPM821S
SESSION: 1
MARKS: 100
FIRST OPPORTUNITY: QUESTION PAPER
EXAMINER:
MODERATOR:
Dr. Mpingana N. Akawa
Prof. James Abah
INSTRUCTIONS
1. Start each question on a new page
2. Please write neatly and legibly.
3. Do not use the left side margin of the exam paper. This must be allowed for the
examiner.
4. No books, notes and other additional aids are allowed.
5. Mark all answers clearly with their respective question numbers.
PERMISSIBLE MATERIALS
1. Non-Programmable Calculator
ATTACHEMENTS
This Question Paper consists of 2 pages including this front page
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QUESTION 1
[20)
a) List the four activities identified as priorities for the improvement of Environmental Impact
Assessment (EIA) systems.
(4)
b) Discussthe near-term and long-term approaches for the mitigation of climate change. (6)
c) Briefly explain each step involved in the management of hazardous, in order of priority. (10)
QUESTION 2
[20)
a) Differentiate between the following terms.
(6)
i. External and internal treatments
ii. Sodic and saline soils
iii. Bioaccumulation and Biomagnification
b) Define residence time and explain its importance in water pollution studies.
(4)
c) Explain how the hydrologic (water) cycle contributes to groundwater pollution and discuss
the prevention measures for groundwater pollution.
(10)
QUESTION 3
[20)
a) With the aid of chemical reactions, explain how acid mine drainage (AMD) is formed. (10)
b) Discussthe ecological impact of acid mine drainage.
(5)
c) Explain how AMD can be prevented.
(5)
QUESTION 4
[20)
4.1 Discussthe concept of risk and explain how it is determined.
(6)
4.2 Discuss how risk has been mitigated using the following approaches:
a) Command and Control approach
(7)
b) The green, self-sustaining approach
(7)
QUESTION 5
[20)
Discuss at least 5 principles of Green Chemistry that are of particular relevance to either
biofuels, renewable energy, chemical synthesis or nuclear energy.
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END OF QUESTION PAPER
Environmental Pollution Monitoring & Remediation (EMP821S)
151 Opportunity November 2023 2