# Algaecultural (DD-724)

> Microalgae are grown in open ponds or in closed photobioreactors (glass or plastic tubes and panels) that supply light, CO2 and nutrients. The footage is credited to Jongerius ecoduna of Bruck an der Leitha, Austria. The company says its patented system uses vertical glass modules, moves the culture hydrostatically rather than with pumps, and runs continuously year-round in a 1-hectare plant that opened in 2018. The company's founders originally aimed at biodiesel but concluded algae were too valuable to burn, and the plant targets food, supplements and cosmetics. Algae biofuel is still not commercially competitive: ExxonMobil ended its algae program in 2022-23 after about $350 million.

- Department: Science (also Tech)
- First published: 2026-06-25
- Last updated: 2026-06-25
- Permalink: https://detailenjoyer.com/case/algaecultural/
- Author: Marcus Easterling (DetailEnjoyer), The Detail Department

## On the timeline

- **2018**: Jongerius ecoduna's 1-hectare algae plant opens in Bruck an der Leitha

Full timeline: https://detailenjoyer.com/timeline/?case=algaecultural

## Quick facts

- **DD-724-F01**: Jongerius ecoduna's 1-hectare algae plant in Austria opened in 2018. _(Write-up · Exhibit C (From biodiesel to food))_
- **DD-724-F02**: ExxonMobil ended its algae biofuel program after about $350 million. _(Write-up · Exhibit D (Biofuel reality check))_

## Write-up

Growing microalgae in walls of glass tubes. Footage from Jongerius ecoduna's photobioreactor plant in Austria.

1. **Ponds vs. reactors**: Open ponds are the cheapest way to grow algae but are exposed to contamination. Closed photobioreactors, which are tube, panel or bag systems, cost more but give tighter control.
2. **The plant in the footage**: Jongerius ecoduna says its patented photobioreactor uses vertical glass modules to increase the lit surface, like the leaves of a tree. It moves the algae hydrostatically instead of with pumps and runs 24 hours a day, 365 days a year.
3. **From biodiesel to food**: Founders Franz Emminger and Martin Mohr started out aiming to make biodiesel but decided algae ingredients were too valuable to burn. The company's 1-hectare industrial plant in Bruck an der Leitha opened in 2018 and produces microalgae for food and supplements.
4. **Biofuel reality check**: Algae can be processed into fuel, but costs remain high. ExxonMobil ended its algae biofuel program after investing about $350 million, and other oil majors have also pulled funding.
5. **What algae are used for**: Microalgae are used today for food and supplements, animal and fish feed, pigments and cosmetics. Fuels remain largely in the research stage.

## Related case files

- [Guizhou Solar (DD-032)](https://detailenjoyer.com/case/guizhou-solar/): Another case about harnessing sunlight
- [Vertical Farming (DD-657)](https://detailenjoyer.com/case/vertical-farming/): Another way of growing crops in engineered systems
- [Stomata (DD-715)](https://detailenjoyer.com/case/stomata/): Another photosynthesis case

## Reel vs. record

- **Reality check**: algae biofuels aren't commercially competitive yet. ExxonMobil ended its algae program after about $350 million, and other oil majors have also pulled funding.
- **Distinction**: open ponds aren't photobioreactors. 'Photobioreactor' means a closed system of tubes, panels or bags.
- **Missing context**: the footage is credited to Jongerius ecoduna, whose plant in Bruck an der Leitha, Austria, opened in 2018 and produces microalgae for food and supplements, not fuel.
- **Precision**: 'algae' is plural, so the line should read 'the algae rapidly convert'.
- **Missing context**: the company says its system moves the culture hydrostatically through vertical glass modules, without pumps. That's a company claim.

## Video: Algaecultural: Growing Microalgae in Walls of Glass Tubes

- Duration: 22.7 s · Published: 2026-06-25
- File: https://detailenjoyer.com/assets/videos/DaCLhx0tHdl.mp4

### Transcript

DID YOU KNOW? Algae farms can function as large-scale photobioreactors, using sunlight, carbon dioxide, water, and nutrients to cultivate microscopic algae inside transparent tubes, flat panels, or open ponds. Through photosynthesis, the algae rapidly converts carbon dioxide into biomass that can be processed into biofuels, animal feed, nutritional supplements, pharmaceuticals, or industrial chemicals. NOW YOU KNOW!

## Questions & answers

**Q: What is a photobioreactor?**  
A: A closed system of tubes, panels or bags. _(Source: Write-up · Exhibit A (Ponds vs. reactors) · Jongerius ecoduna: Technology; U.S. Department of Energy, Bioenergy Technologies Office: Algal biofuels)_

**Q: Where is Jongerius ecoduna's plant?**  
A: Bruck an der Leitha, Austria. _(Source: Write-up · Exhibit C (From biodiesel to food) · Jongerius ecoduna: Our Journey)_

**Q: What did ecoduna's founders originally want to make?**  
A: Biodiesel, before pivoting to higher-value products. _(Source: Write-up · Exhibit C (From biodiesel to food) · Jongerius ecoduna: Our Journey)_

**Q: Which oil company ended its algae biofuel program?**  
A: ExxonMobil, after about $350 million. _(Source: Write-up · Exhibit D (Biofuel reality check) · The Guardian: Big oil firms touted algae as climate solution. Now all have pulled funding (2023); U.S. Department of Energy, Bioenergy Technologies Office: Algal biofuels)_

**Q: What's the cheapest way to grow algae?**  
A: Open ponds, though they risk contamination. _(Source: Write-up · Exhibit A (Ponds vs. reactors) · Jongerius ecoduna: Technology; U.S. Department of Energy, Bioenergy Technologies Office: Algal biofuels)_

## Sources

- [Jongerius ecoduna: Technology](https://jongerius-ecoduna.at/en/company/production/technology/)
- [Jongerius ecoduna: Our Journey](https://jongerius-ecoduna.at/en/company/our-journey/)
- [U.S. Department of Energy, Bioenergy Technologies Office: Algal biofuels](https://www.energy.gov/eere/bioenergy/algal-biofuels)
- [The Guardian: Big oil firms touted algae as climate solution. Now all have pulled funding (2023)](https://www.theguardian.com/environment/2023/mar/17/big-oil-algae-biofuel-funding-cut-exxonmobil)

## Cite this case file

Easterling, Marcus. "Algaecultural." The Detail Department (DetailEnjoyer), case file DD-724, last updated Jun 25, 2026. https://detailenjoyer.com/case/algaecultural/