Biodiesel Sludge Converted to Hydrogen

Fight disinformation. Get a daily recap of the facts that matter. Sign up for the free Mother Jones newsletter.


241469637_3334f8faa3_m.jpg What to do with the byproduct of biodiesel? You know, that low-grade sludge that’s produced, molecule for molecule, alongside biodiesel. Well, scientists at the University of Leeds have turned the unwanted crude glycerol (sludge) into a high-value hydrogen rich gas. The novel process developed by Valerie Dupont and her co-investigators mixes glycerol with steam at controlled temperatures and pressures, separating the waste product into hydrogen, water and carbon dioxide, with no residues. A special absorbent material filters out the CO2, leaving a purer product.

Currently hydrogen production is expensive and unsustainable, using either increasingly scarce fossil fuels or other less efficient methods such as water electrolysis. The new process is near carbon neutral, since the CO2 generated is not derived from the use of fossil fuels.

Let’s hope the new processes emerging from a worldwide explosion of research prove green, sustainable, and economically feasible.

Julia Whitty is Mother Jones’ environmental correspondent. You can read from her new book, The Fragile Edge, and other writings, here.

ONE MORE QUICK THING:

Or at least we hope. It’s fall fundraising time, and we’re trying to raise $250,000 to help fund Mother Jones’ journalism during a shorter than normal three-week push.

If you’re reading this, a fundraising pitch at the bottom of an article, you must find our team’s reporting valuable and we hope you’ll consider supporting it with a donation of any amount right now if you can.

It’s really that simple. But if you’d like to read a bit more, our membership lead, Brian Hiatt, has a post for you highlighting some of our newsroom's impressive, impactful work of late—including two big investigations in just one day and covering voting rights the way it needs to be done—that we hope you'll agree is worth supporting.

payment methods

ONE MORE QUICK THING:

Or at least we hope. It’s fall fundraising time, and we’re trying to raise $250,000 to help fund Mother Jones’ journalism during a shorter than normal three-week push.

If you’re reading this, a fundraising pitch at the bottom of an article, you must find our team’s reporting valuable and we hope you’ll consider supporting it with a donation of any amount right now if you can.

It’s really that simple. But if you’d like to read a bit more, our membership lead, Brian Hiatt, has a post for you highlighting some of our newsroom's impressive, impactful work of late—including two big investigations in just one day and covering voting rights the way it needs to be done—that we hope you’ll agree is worth supporting.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate