Increased awareness and regulation of dairy waste products have spawned a variety of technical innovations, including anaerobic digesters, which use bacteria to make a useful biogas fuel from animal waste products.
Free publication that you can download.
This publication is best viewed using the free Adobe® Acrobat® Reader. You can download a free copy of the Acrobat Reader from Adobe
Systems Incorporated.
Some users have experienced problems using Preview with these documents; we recommend using the Adobe® Acrobat® Reader.