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Anaerobic Digestion
This flashcards presents different kind of wastes that are suitable and not suitable to feed the anaerobic digestion.
6
Chemical Engineering
Post-Graduate
05/20/2019

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Term
Feedstock residues (slurry, manure, chicken manure...)
Definition
High COD content, high water content, but high nutrient content, N, that can increase ammonia content in the digester and inhibit digestion.
Term
Vegetal origin residues (crop residues, pruning remains, mop cleaning debris)
Definition
Lack of humidity, dry digestion advisable.
Warning: High content in lignocellulosic materials!
Term
Wastewater
Definition
Low COD content, difficult to obtain a positive energy balance. Requires biomass retention barriers.
Term
WWTP Sludge
Definition
High COD content, high water content.
Term
Agro-food industries streams
Definition
Depending on its origin the content on COD and water may vary.
Term
Organic fraction of municipal solid waste
Definition
High COD content, proper C/N ratio, may require additional water.
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