I will soon write a post about biochar and I will also quote all the literature. Also, I can send you some good e-books on biochar topic if you are really interested.
To get an impression what biochar do to the soil, feel free to write Terra Preta in google. :)
That sounds great! I began utilizing biochar a few years ago during an internship and It's an amazing concept/practice! I'll give that a look- thanks!