Sounds promising but a long way from doable...they mentioned using sulfuric acid to make the biochar. Not sure how much you’d need for something like a waste lagoon...
Would you truck the waste to a converter or set up next to the waste lagoon with,say, a trailer mounted plant and separate collection vessels for they hydrogen and CO2...
Be interesting to see it happen.
If all these technologies can come together in a synchronistic way, there might not be much in the way of waste at all.
Rice University has developed a technology, at the lab level, where they can jolt/heat carbon sources in a flash. The garbage just breaks down to its element components and the carbon can be stripped of and be turned into graphene, while all you’d have left is metals and garbage like. All the gas in the garbage would be evaporated instantly.
Again, if everything works at the lab level can be supersized to industrial level.