Bio-materials may be substituted for petrochemical feedstocks as petroleum prices rise.
Source: wiktionary
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Bio-materials may be substituted for petrochemical feedstocks as petroleum prices rise.
Source: wiktionary
The filtered extract of the mash is the feedstock for the fermenter.
Source: wiktionary
In 2006, about 6 percent of the world's crude oil production was used in non-energy applications, primarily as a petrochemical feedstock.
Source: wiktionary