568 AE Pretreatment of biomass
Spring 2009 Lectures: 2 hours Lab: 2 hours Instructor: Tae Hyun Kim; Agricultural and Biosystems Engineering 3101 NSRIC, Phone: [phone] Email: [e-mail] A 3credit course to discuss the brief organic chemistry of the lignocellulosic materials, the fundamentals of pretreatment, heat and mass transport phenomena in the biomass pretreatment, and various bioconversion strategies Course topics Week 1st ~ 2nd 3rd ~ 4th 4th ~5th
6th ~7th 8th ~9th 10th 13th
14th
Topic Organic chemistry of lignocellulosic materials ; Basic carbohydrate chemistry (cellulose, hemicellulose, lignin, extractives, pectin etc) Biomass composition analysis ; cellulose, hemicellulose, lignin, extractives etc Various pretreatment methods ; Acid, alkaline, hydrothermal, and hybrid pretreatment methods. Material Balance in various pretreatment, fates of each component and its appropriate bioconversion process upon pretreatments, factors affecting enzyme hydrolysis Chemical reactions in pretreatment ; Acid, base, and enzyme hydrolysis, lignin polymerization and depolymerization, carbohydrate degradation pathways Hydrolysis kinetics ; Cellulose and hemicellulose, acid and enzyme hydrolysis kinetics in batch reactor and continuous reactor Heat and mass transport phenomena in pretreatment ; Temperature and concentration distributions (diffusion) in solids and in various liquid flows, mathematical analysis using ordinary and partial differential equation with boundary conditions, chemical reagent diffusion into biomass particle, determination of diffusivity. Pretreatment strategy
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15th
; How to design whole bioconversion process scheme, case study. Recent developed pretreatment technology, other application, and presentation.
Laboratory Exercises Pretreatment Soaking in aqueous ammonia (SAA; ammonia steeping) method Dilute acid pretreatment Hydrothermal pretreatment Biomass composition analysis (carbohydrates, lignin, and extractives) Enzyme saccharification test using pretreated biomass (it may include ethanol fermentability test) Option: chemical diffusion test using sulfuric acid and several biomasses, such as corn stover, switchgrass, or yellow poplar. Course Objectives 1. Discuss various processes pretreatment and recent developments. 2. Discuss the fundamentals of chemothermo pretreatments. 3. Discuss the heat and mass transport phenomena (diffusion) in the pretreatment 4. Discuss the pretreatment strategies in bioconversion of lignocellulosic materials. 5. Conduct the laboratory exercises and develop the mathematical diffusion model Expected learning outcomes 1. Understand basic organic chemistry of cellulose, hemicellulose, and lignin. 2. Understand the relationship between pretreatment/bioconversion process and chemical/physical characteristics of lignocellulosic materials. 3. Understand temperature and concentration distributions (diffusion) in solids and in various liquid flows. 4. Should be capable of designing whole bioconversion processes including pretreatment process. 5. Understand the experimental data analysis Term paper
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Students are expected to submit term paper and make a short presentation in class. Topic will be chosen after midterm examination. Course Requirements 1. Students are expected to attend all classes and approval for absence must be obtained from the instructor. 2. Homework will be frequently assigned to help students understand and review subject matters. All homework assignment must be completed and turned in to receive a passing grade. Assignments not turned in on the ...