Flames and smoke billow from a petroleum-refining plant in Shiogama.

火焰和浓烟从盐釜的石油精炼厂中滚滚冒出。

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But the seeds can be consumed only after an extensive refining process removes the gossypol, a toxic chemical that helps protect the plant from insect and microbe infestation.

但是，只有在经过一道去除棉子酚的深加工精炼程序之后，棉籽才能食用。棉子酚能保护棉花植株免受昆虫及微生物的侵扰，是一种有毒的化学物质。

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Normally the by-product. benzene residue. in benzene refining in coking plant is put into tar or sold and so the benzene product in the residue cant be recovered.

焦化厂苯精制的副产品-苯残渣，一般采用配入焦油中或外卖的处理方法．其中的苯类产品得不到有效回收。

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The process is also capable of transforming virtually all plant matter into liquid fuel, whereas typical ethanol refining uses only the fatty acids that make up around 10 percent of the mass of dried plants.

CNN: Green breakthrough for 'biodiesel'

For the past 18 months engineers have been testing coal, petroleum coke (a refining by-product) and other fuels in the plant, tinkering with the catalyst and gathering data.

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