Catalysis

Agriculture

Engineering

Ecology

Sustainable energy

Biology

Milking

Statistics

Microeconomics

Hectare

Scarcity

Animal science

Algae fuel

Energy (signal processing)

Economics

Biochemistry

Computer science

Diatom

Biodiesel

Solar energy

Biochemical engineering

Waste management

Gasoline

Renewable energy

Mathematics

Process engineering

Environmental science

Chemistry

Industrial & Engineering Chemistry Research

In the face of increasing CO2 emissions from conventional energy (gasoline), and the anticipated scarcity of crude oil, a worldwide effort is underway for cost-effective renewable alternative energy sources. Here, we review a simple line of reasoning: (a) geologists claim that much crude oil comes from diatoms; (b) diatoms do indeed make oil; (c) agriculturists claim that diatoms could make 10−200 times as much oil per hectare as oil seeds; and (d) therefore, sustainable energy could be made from diatoms. In this communication, we propose ways of harvesting oil from diatoms, using biochemical engineering and also a new solar panel approach that utilizes genomically modifiable aspects of diatom biology, offering the prospect of “milking” diatoms for sustainable energy by altering them to actively secrete oil products. Secretion by and milking of diatoms may provide a way around the puzzle of how to make algae that both grow quickly and have a very high oil content.

Milking Diatoms for Sustainable Energy: Biochemical Engineering versus Gasoline-Secreting Diatom Solar Panels