Hydrogen Production: creating an efficient industry.

Liora Berkovich, Jannik Fritz, Guillem Rivas, Hagai Shechter

Today’s situation

- Not green.

- Expansive to transport.

- 65%-80% energy efficienct of the production.[2]

- 100 billion dollars industry.[1]

- Ammonia Production.- Coolant.- Welding.- Leak cheaking.- Weather Baloons.- Fission Research. & more...

[3]

Where do we use it?

H2 as a FUEL

4-5 $/Kg

What is our goal?

- Reduce greenhouse gas emissions.

- Make it transportable and storeable.

- Produce H2 cheaply.

Our methodPlants → Sugar Sugar + Enzyme→ Hydrogen[4] →H2+ Sugar mixture → Safe!

Step 0: Harvesting - 2500$ for 1 hectare (10,000 m2) of

salicornia bigelovii (plant).

- Total 2.5 tonnes of seeds per hectare.

- 20 tonnes of hydrogen per hectare approximately.

1st Step - extracting sugar

- Seperate lignin from cellulose to obtain sugar.

- 92% of the mass of the plant is sugar.

- 26% of the sugar is xylose.

2nd Step - producing hydrogen

combine xylose with enzymes at 50 Co

rate of production: 1.95 mmol/h/l

after 20 hours: 9.5 mol/1mol of xylose

C5H10O5 + 5H2O→10H2 + 5CO2

13 enzymes needed

ratio between CO2 and H2 is 1:2

3rd Step - storing hydrogen- Hydrogen is mixed with

starch, making it solid.

- Enzymes are used to seperate them again.

- 1kg of starch contains 200g of H2

Application in the industry

5.64kg H2 to drive 600km

A tank capacity 30kg of starch & H2

Comparison of costsH2 production by steam reforming

H2 production by sugar.

costs between 3-5$ (depending on purity)

enzymes for separation: 0.03-0.05$+production costs of H2: 0.05$+construction costs, distribution, etc.: ca. 0.75$------------------------------------------------= 1$ maximum instead.

Conclusion- cheaper hydrogen.

- 100% pure hydrogen.

- a greener production.

Our Calculations

References

http://onlinelibrary.wiley.com/doi/10.1002/anie.201300766/fullhttp://www.vt.edu/spotlight/innovation/2012-02-27-fuels/zhang.htmlhttp://pubs.acs.org/doi/abs/10.1021/nn5051954http://phys.org/news/2014-09-harvesting-hydrogen-fuel-sun-earth-abundant.html#inlRlvhttp://link.springer.com/article/10.1007/s00253-012-4456-7#page-1http://hydrogengarage.com/pdf/BUBBLES4.pdfhttp://www.miracosta.edu/home/kmeldahl/writing/..%5Carticles/crops.pdf http://www.energypost.eu/exclusive-report-boeing-reveals-biggest-breakthrough-biofuels-ever/