In this lab investigation, students will become familiar with the basics of proximate analysis of biomass. Proximate analysis is the determination by prescribed methods of moisture, volatile matter, fixed carbon, and ash. All components should sum to 100% of the biomass. The data from this lab investigation can be used in conjunction with chemical analysis labs to give students a complete picture of the chemical makeup of plant material.
This analysis does not include determinations of chemical elements other than those named.
Learning Objectives
Upon completion, students will be able to:
- Understand the concepts and processes of proximate analysis
- Understand the chemical biology of plant matter
- Calculate heating values based on ash, moisture, carbon, and volatile matter data
Concepts/Skills
Plant Chemical Biology, Biomass, Biofuels, Energy Content
Prior Knowledge
Background provided
Time Required
150 minutes
Required Supplies
Bulk biomass, 1 gallon ice cream pails, 1000mL graduated cylinders, large funnel (optional), large cardboard box, meter/yardstick, rough balance (+/- 0.01g), analytical balances (+/- 0.0001g), drying oven, 50 cubic centimeter non-porous containers, desiccators, fume hood, crucibles, ring stands, support rings, wire gauze, bunsen burners, rubber hosing, crucible tongs, matches/igniters