Mostly wrong. Emissions from burning biomatter are less than coal, and particulate emissions from power plants are very stingently regulated.
Particulates, called "fly ash", are removed electrostatically and collected along with the bottom ash--particles that are too heavy to go up the stack. This ash can be pelletised and used as a high quality fertiliser.
Processing food waste is a big challenge, from straw, husks, peels and such to animal waste (you can feed a lot of food products to livestock but you still have manure to handle). Such waste is not immediately useful...it must be composted or cooked or otherwise processed otherwise it does more harm than good.
I do not support subsidised production of " fuel crops" like switchgrass and surplus corn, but food waste in the developed world is almost tragic. Developing biomass energy technology is vital to recover this wasted energy source. Making it into automobile fuel is a bad way to do it, but burning it to make electricity or heat homes or capturing the methane (much more serious source of greenhouse effect) from landfills or stockyards or barns to use, well, solar be damned. This is recovering wasted energy anyways.
It should be said that though studies like this are scientifically valid, they are commissioned with a political agenda in mind. First we had peak oil, we were going to run out so we had to get off oil, which was a valid observation at the time. Then technology made more oil recoverable and now we have reserves that could stretch out centuries. But wait, if we burned all that oil it would release all this carbon and make our climate like it was when the dinosaurs were alive--also a theory with scientific merit. But then we use technology again to try to solve the issue and it gets shot down as well. Biofuels are inefficient and compromise food production. Nuclear is dangerous and makes toxic pollution. Wind is unreliable, destroys habitats and kills birds. Solar is similar in that it destroys habitat and is unreliable--we need to store and transmit power at night time. Hydro ruins rivers and floods lands and so on.
There is a pattern here. Scientific studies funded with the purpose of starting at a pre determined conclusion and working back to a credible theory to back it. Just like science funded by big oil or ither industries, governmental entities do this too. In cases like this it is done to justify ideological policies or the creation of bureaucracies.
Case and point...Kyoto and related accords spearheaded by the UN, which is dominated by developing and undeveloped nations and representatives that lean heavily socialist. The whole world needs to address climate change, but developing nations get a free pass and the rest enforce emissions caps through elabourate trade and credit schemes adminustered by a large bureaucracy. The real problem of climate change continues apace, but the agendas of developing nations to get a competitive advantage in industry and socialists have a means of wealth transfer/equalisation as well as guaranteed jobs running the cap and trade market...a handy nest-feathering scheme for them too (nothing is more treacherous than a wealthy socialist
It sure would be nice if we all did what is sensible and simple while we thought of all these wild future schemes...biofuel is a great concept when viewed in the "reduce, reuse, recycle" mindset. Using up thousands of acres to grow switchgrass for the sole purpose of making ethanol to put in cars is asinine, but so is building a solar array in the desert the size of Phoenix compared to making pig poop into electricity, which would have otherwise polluted waterways and released much more damaging methane into the atmosphere. Bonus is that the byproduct of creating electricity with pig poop is a quality, much more eco friendly fertiliser to *increase* food production.
But then that doesn't create scarcity which can be used to hold power over a population, nor does it advance the socialist cause of wealth redistribution. Also the concept is too simple there must be a catch...to get big government/corporate buy in a solution must be complex, intrusive, widespread and expensive.