Module 11 focuses on AD feedstock materials from typical farm manure and crop residuals to off-farm organics. As with all bioenergy technologies, feedstock is critical to the success of AD. Operators have to create AD diets that maximize energy while maintaining optimal ratios of carbon to nitrogen, minimizing ihibitition by toxis or complex metabolic feedback loops, ensuring the proper percentage of solids, all the while using readily available waste materials while excluding plastics and other biodegradables.
Lecture topics for Module 11: Feedstock
11.1: Organics & organic waste (or residuals)
11.2: The ideal AD feedstock?
11.3: Vermont: farm vs. off-farm feedstock materials
11.4: Feedstock values of manures
11.5: Off-farm feedstock energy values
11.6: Inhibitors: the dark side of feedstock
11.7: Predicting feedstock energy content from labels?
11.8: Goal: consistent diet and homeostasis
Links and items of interest:
> Chew on this: farmers are using food waste to make electricity (Aubrey, NPR, 30 Nov 2019)
> How these Massachusetts farmers are turning manure and food waste into power (Aubrey, PBS
Newshour, 29 Nov 2019)
> Vermont Gas sees growing demand and potential for renewable natural gas (Mingle, Energy News
Network, 19 Nov 2019)
> How cities are turning food waste into fuel (Dawson, Politico, 21 Nov 2019)
> W/ VIDEO: How happy cows will help heat a Vermont campus (Guessferd, WCAX, 20 Aug 2019)
> VIDEO: Turn food scraps into energy (Grid2energy)
> 'Did it work?': GMP's energy-generating community biodigester in St. Alban's Town (Van Dine, VPR, 11 Sep 2019)
> List of chemicals compatible with anaerobic digestion (Gerardi).
> Vermont's Universal Recyline Law
> Certificate for Public Good For VTCAD
> Farm digester evolution in Vermont (Goldstein, Biocycle, Feb 2013)
> Feedstock biogas yields (biogas-info.co.uk)
> Online European Feedstock Atlas basis version
> Biogas yields of various anaerobic digestion substrates (Bavarian State Research Center for Agriculture)
(Use Google translate)
> Biogas and C:N data from Bio-Methatech
> Module 11 lab exercise:
> AD diet design and analysis