4 - Anaerobic Digestion 1

Flashcards covering key vocabulary and concepts related to Anaerobic Digestion.

Anaerobic Digestion (AD)

A natural process in which microorganisms break down organic matter in the absence of oxygen into biogas and digestate.

Biogas

A mixture of carbon dioxide and methane produced during anaerobic digestion.

Digestate

A nitrogen-rich fertiliser remaining after anaerobic digestion of organic material.

Challanges of Anaerobic Digestion

Involves ensuring a secure supply of quality feedstock and addressing processing problems.

Pre-treatment

The initial processing of feedstock to improve digestion efficiency and biogas yield.

Biomethane Potential (BMP) Test

A test that measures the potential gas production from a substrate during anaerobic digestion.

Buswell Equation

A chemical equation used to calculate the theoretical methane yield from organic substrates.

Methanogenesis

The stage in the anaerobic digestion process where methane is produced by converting organic materials.

Critical Process Design Parameters

Conditions affecting anaerobic digestion performance, such as temperature, mixing, and retention time.

Digestate Types

Includes whole digestate, liquor, and separated fiber, often classified under waste management legislation.