It’s bogus. We’ve been trying to find a viable gasification technology for 2 years. It’s simply not there. They may be able to make the fuel, but not profitably. Besides, you aren’t serious about gasification unless you can do 500 tons per day.
I did notice a lack of cost estimates in this article (or more to the point time). Along with the fact they are talking about a 4-ton reactor as the next step, these researchers are looking for money for their research. I suspect that it will take at lest two years with a 4-ton reactor before going to the 100-ton reactor. Then at least two years before main production, a reactor in the 500-1000 ton range.
The next question is how much yard waste can they conveniently acquire? A typical large chip truck for residential work can carry about 5 tons.