In a word, no.
I concentrated mainly on using carbohydrate-rich materials, such as tofu wastewater or potato processing wastewaters. Methods used were either biochemical or thermal. Results were poor. I concentrated my efforts mainly on the design of photobioreactors, and got very very dissappointed...
For those of us disagreeing with environmentalists, let me just stress the importance of the finite nature of all resources. There is a book entitled LIMITS TO GROWTH which illustrates this rather vividly. The problem is not solely to protect the environment for our kids or their kids (frankly, I couldn't care less). From my corner of the ring, we need to pull lots of strings in order to be able to maintain our standard of living, should oil/coal etc fail to cover our needs. Hubbert's peak is near, or maybe even in the past, so now oil prices will start to escalate (not to mention the dynamic entry of the chinese in the market, and they are sucking up major quantities of oil at low prices, making oil more expensive for the rest of us), and maybe other forms or carriers of energy will become viable alternatives.
IN SHORT, what I'm saying is that I think that global warming is just the tip of the iceberg, if you excuse the pun. We are dealing with finite resources people, and we need to find a way out before it's too late...
edit: To answer lazylion's question more specifically, it would probably be best if such organic wastes be used in standard wastewater treating processes (oxidative ponds etc), and maybe burning the residue to produce heat. Conversion to hydrogen and from there to electricity is too many steps, and too many steps usually signify energy (maybe even mass) losses in all steps.