Question

In: Biology

compare the digestibility of lignocellulosic biomass, advantages, and disadvantages in acid pretreatment and alkaline pretreatment

compare the digestibility of lignocellulosic biomass, advantages, and disadvantages in acid pretreatment and alkaline pretreatment

Solutions

Expert Solution

Comparison of different pretreatment of lignocellulosic biomass

Acid pretreatment Alkaline pretreatment

Short duration of reaction

Longer than acid hydrolysis
Lesser residence time Carbohydrate polymerization is reduced
removal of lignin and solubilization of hemicellulose Reduction of cellulose crystallinity
very high glucose yield Very effective removal of lignin
Increased chance of corrosion of containers for reaction process- costly instruments and reaction vessels are required. Softwood digestibilty enhancement is low
costly acids are required for recovery. need costly alkaline catalyst
Inhibitory sugars are formed as resultants or products of reaction Less amount and number of inhibitors are only formed
Byproducts are degraded lignin structure is altered

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