Biogas

Question 1

Layer of floating material (mainly fibrous) on the slurry

Answer 1

Scum

Question 2

Mixture of manure and water

Answer 2

Slurry

Question 3

Difference in height between the digester wall and filling line

Answer 3

Freeboard

Question 4

Organic material used to produce biogas

Answer 4

Substrate

Question 5

Settled portion or precipitate of the slurry, mad like and semi solid mass

Answer 5

Sludge

Question 6

Chamber where manure and water are collected, stored and separated from heavy and non-biodegradable materials before feeding them into the digester

Answer 6

Collecting tank

Question 7

Cantilever beam that holds the gas holder or movable covered position at the desired biogas pressure

Answer 7

Gasholder retainer

Question 8

Level of slurry when the digesters is at full load

Answer 8

Filling line

Question 9

Mesophilic temperature range

Answer 9

20° to 40°C

Question 10

Amount of slurry fed per unit volume of digester capacity per day

Answer 10

Loading rate

Question 11

Anaerobic bacteria that act upon organic materials and in the process and produced biogas

Answer 11

Methanogens

Question 12

Amount of biogas produced per day per cubic meter of slurry

Answer 12

Gas production rate

Question 13

Space inside or outside the digestive for the collection and storage of biogas

Answer 13

Gas chamber

Question 14

Average period that a given quantity of slurry is retained in the disaster for digestion

Answer 14

Retention time

Question 15

Layer of compacted soil and gravel to support the digester wall

Answer 15

Backfill