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(CENG103)[2004](s)final~1021^_10022.pdf
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DEPARTMENT OF CHEMICAL ENGINEERING
Hong Kong University of Science and Technology
Final Examination - Fall Semester 2004



CENG 103 - Products and Processes
Friday, December 17, 2004. Time 16:30-19:30. Room G017



Instructions to Students

1. Write your NAME, STUDENT ID, COURSE CODE and QUESTION NUMBER on each answer sheet.

2. Answer ALL QUESTIONS and write EACH ANSWER on separate sheets. Do NOT write answers for more than one question on the same sheet of paper. Do NOT use the left hand side of the paper for answering the questions. Materials written on the left hand side of the paper will NOT be marked.

3. The percentage marks are shown with each question.

4. The answers to questions in Part II should commence on a new page.

5. Number all pages.

6. You may use your books and notes. No electronic medium (e.g. laptop, palmtop computers) is allowed.

8. Return examination question sheets with your answers.

9. Take your time to read the questions carefully.

10. No discussion or talking is allowed during the examination.













Section A (Each question is worth 12.5%. Do not spend more than 60 minutes on
this section.)


(1)
The avian flu, or the so-called "bird flu," is a strain of influenza virus called influenza A (H5N1) and is a recognized cause of disease in chickens and other birds. In 1997, this pathogen caused fatal outbreaks in poultry flocks in rural Hong Kong and Guangdong Province, China. As a new recruit to the Food and Environmental Hygiene Department of the Hong Kong SAR Government, you are charged with the responsibility to design a comprehensive list of measures to ensure that local and imported live, freshly slaughtered, and frozen poultry are free from the H5N1 virus. Draw up such a list and group the suggested measures into two: Essential and Desirable. The suggested measures may include both requirements on the products or control of the processes of poultry farming, slaughter and delivery.




(2)
Three recent graduates from the HKUST CENG, CEEV and CBPE programs, have decided to join force to start a company making new health products. One of the products they are considering is a Super Health Enhancer, which combines two materials: Ginseng roots and Cordyseps. Ginseng roots and Cordyseps are usually sold separately in various product forms: as roots and herbs, or in an encapsulated powder form. Users of the former need to go through a cumbersome process of boiling the virgin Ginseng roots and the Cordyseps for long hours to extract the health-enhancing essence for consumption. The 3 bright graduates decided to make the new product in a capsule form. Outline a possible process scheme for making this new product. Sketch the process schematic diagram. Present steps that could be undertaken to ensure quality control, product safety and waste reduction.




(3)
The