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Bioenergy > feedstocks > first generation ethanol feedstocks > Whey

Whey, also known as milk plasma, is a by-product from cheese or casein production. It is the liquid remaining after cheese has been curdled and strained. Whey is being considered as an ethanol feedstock.


  • Although it can be used as food product or additive, the large quantities of whey produced during cheese production create a real disposal problem.[1]
  • As much as 50% of whey produced is disposed off as sewage.[1]
  • Converting this waste stream to ethanol could help eliminate substantial quantities of agricultural waste.


See books, reports, scientific papers, position papers and websites for additional useful resources.


  1. 1.0 1.1 German dairy products group to make bioethanol from whey, 3 April 2007 from Biopact.com.

Bioenergy feedstocks edit

Biodiesel feedstocks:
Currently in use: Animal fat | Castor beans | Coconut oil | Jatropha | Jojoba | Karanj | Palm oil | Rapeseed | Soybeans | Sunflower seed | Waste Vegetable Oil (WVO)
Currently in research and development: Algae | Halophytes (Salt-tolerant plants)

Ethanol feedstocks:
First-generation: Cassava | Corn | Milo | Nypa palm | Sorghum | Sugar beets | Sugar cane | Sugar palm |Sweet potato | Waste citrus peels | Wheat | Whey
Second-generation: For cellulosic technology - Grasses: Miscanthus, Prairie grasses, Switchgrass | Trees: Hybrid poplar, Mesquite, Willow

Charcoal feedstocks: Bamboo | Wood
Waste-to-energy (MSW)

Liquid biofuels edit
Oils & fats: Biodiesel | Pure plant oil (PPO)/Straight vegetable oil (SVO) | Renewable diesel
Oil feedstocks: Animal fat, oil palm, rapeseed, soybeans, etc.
Alcohols: Bio-ethanol | Biobutanol - Alcohol feedstocks: cellulosic, sugarcane, corn, sugarbeets, etc.
Biomass-to-Liquids (BTL): Pyrolysis oil | Methanol | Dimethyl ether (DME) - Biomass feedstocks

Other: ETBE | biokerosene


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