Scientist turn sewage into GREEN hydrogen, animal feed using solar-powered tech

[Caribbeans]

Scientist turn sewage into GREEN hydrogen, animal feed using solar-powered tech

InterestingEngineering.com | Neetika Walter | Mar 13, 2025

Can recycling waste be the key to a sustainable future? Scientists have developed a solar-powered method to turn sewage sludge into green hydrogen and animal feed, tackling both waste and sustainability challenges.

Using a three-step solar-powered process, scientists at Singapore’s Nanyang Technological University (NTU) integrated mechanical, chemical, and biological techniques to treat the sewage sludge.

“Our method transforms waste into valuable resources, reducing environmental damage while creating renewable energy and sustainable food. This exemplifies the circular economy and contributes to a greener future,” Associate Professor Li Hong, who is the lead researcher of the study, said.

From waste to wealth

The sludge-to-food-and-fuel method process starts with mechanically breaking down sewage sludge, followed by a chemical treatment that removes harmful heavy metals from organic materials like proteins and carbohydrates...more
https://interestingengineering.com/science/sewage-sludge-green-hydrogen-animal-feed

[NNadir]

1. Well, at least we can say, it's one of the first times that the hydrogen scam is acknowledging that it's full of shit.

Actually, it's not the first time at all. All of the "hydrogen firsts" we hear about in the fossil fuel industry's greenwashing schemes to rebrand themselves as "green hydrogen," - a bald faced lie - are rehashes of stuff that's been build, hyped and abandoned hundreds of times before over many decades,

There are actually thousands upon thousands of papers on making hydrogen from biomass, shit, wood, straw, what have you. They go back for quite some time.

Here's a graduate thesis for the same idea published in 1970:

HYDROGEN PRODUCTION IN THE ANAEROBIC DIGESTION OF SEWAGE SLUDGE

The guy who wrote it when he was a kid has almost certainly retired or maybe he's dead; if he's still alive, he's an old man.

Still, the fact remains, for all the dishonest cheering for the scam - more than half a century of it -hydrogen is still made, overwhelmingly, by exergy destruction of dangerous fossil fuels, making hydrogen a very dirty chemical commodity. It isn't a fuel in any sense of the word, except in cartoonish videos made by the fossil fuel industry to greenwash themselves.