By-product

• dried blood and blood meal – from slaughterhouse operations
• chicken by-product meal – clean parts of the carcass of slaughtered chicken, such as necks, feet, undeveloped eggs, and intestines.
• chrome shavings – from a stage of leather manufacture
• collagen and gelatin – from the boiled skin and other parts of slaughtered livestock
• feathers – from poultry processing
• lanolin – from the cleaning of wool
• manure – from animal husbandry
• meat and bone meal – from the rendering of animal bones and offal
• poultry byproduct and poultry meal – made from unmarketable poultry bones and offal
• poultry litter – swept from the floors of chicken coops]
• whey – from cheese manufacturing
• fetal pigs

• acidulated soap stock – from the refining of vegetable oil
• bran and germ – from the milling of whole grains into refined grains
• brewer’s yeast – from ethanol fermentation
• corn stover – residual plant matter after harvesting of cereals
• distillers grains – from ethanol fermentation
• glycerol – from the production of biodiesel
• grape seed oil – recovered from leftovers of the winemaking process
• molasses – from sugar refining
• orange oil and other citrus oils – recovered from the peels of processed fruit
• pectin – recovered from the remains of processed fruit
• sawdust and bark– from the processing of logs into lumber
• straw– from grain harvesting

• asphalt – from the refining of crude oil
• fly ash – from the combustion of coal
• slag – from ore refining
• gypsum – from Flue gas desulfurization
• ash and smoke – from the combustion of fuel
• mineral oil – from refining crude oil to produce gasoline
• salt – from desalination

• sludge – from wastewater treatment

• By-product synergy

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