Food Waste to Energy: An Overview of Sustainable Approaches for Food Waste Management and Nutrient Recycling

Table 4

C/N ratio for some materials.

Material	% N	C : N
Animal urine	15–20	1
Cotton stalks	1.7	30
Cow, buffalo manure	1.4–3	15–40
Oat straw, flax straw	1–1.2	50–60
Wheat and rice straw	0.3–0.5	120–150
Sawdust	0.1–0.25	200–500