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23-Chem-B10 Life Cycle Assessment (LCA): May 2017

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 LCA Fundamentals – Boundaries, Life-Cycle Phases, Impact Assessment, Benchmark Compounds
  2. Question 2 Heat Integration – Pinch Analysis & Heat Exchanger Network
  3. Question 3 Environmental Fate, Risk Assessment and Ecological Impact
  4. Question 4 Streamlined Comparative LCA – Pipeline vs. Rail Transportation of Liquid Fuel
  5. Question 5 Industrial Ecology, Environmental Assessment Tiers, Risk, Release Assessment & LCA Applications

Start with Question 1 →

National Exam 16-Chem-B10, Life Cycle Assessment (LCA) — May 2017. 3 hours, Closed-Book Exam (approved calculator and one double-sided aid sheet permitted). Question 1 is mandatory (28 marks); any three (3) of the remaining four (Questions 2–5) constitute a complete 100-mark paper, and only the first four questions as they appear in the answer book are marked. All five questions are solved below for completeness.

Reference texts: Baumann & Tillman, The Hitch Hiker's Guide to LCA; Graedel & Allenby, Industrial Ecology and Sustainable Engineering; Kemp, Pinch Analysis and Process Integration, 2nd ed.; Mackay, Multimedia Environmental Models: The Fugacity Approach, 2nd ed.; Davis & Cornwell, Introduction to Environmental Engineering.