Energy & Green Tech

Recycling cigarette waste to produce green fuel

Stricter environmental norms and fossil fuel pollution call for cleaner fuels such as biodiesel. This vegetable oil- or animal fat-based diesel is biodegradable—up to four times faster than petroleum diesel—and nontoxic.

Engineering

An eco-friendly solar-driven protocol solves water-oil separation

The discharge of nuclear wastewater from Japan has drawn concern and condemnation from countries around the world. As a result, the issue of marine pollution is once again in the spotlight. Among the traditional marine environmental ...

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Oil

An oil is a substance that is in a viscous liquid state ("oily") at ambient temperatures or slightly warmer, and is both hydrophobic (immiscible with water) and lipophilic (miscible with other oils, literally). This general definition includes compound classes with otherwise unrelated chemical structures, properties, and uses, including vegetable oils, petrochemical oils, and volatile essential oils. Oil is a nonpolar substance.

The term oil is often used colloquially to refer to petroleum.

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