Quantalux Blog

News, events, observations, industrial and otherwise, from a Quantalux point-of-view.

Pilot Scale Dual-Stage Digester – Now Operational

For the last year, Quantalux and students/staff at Michigan State University have been building a pilot scale anaerobic digester (“Pilot AD”). This mobile unit can process manure, food waste and FOG (Fats, Oils and Greases), and is designed to be used as a test-bed to explore feedstock recipes and the biogas potential of mixed food/manure feedstocks.

The Pilot AD includes a thermophilic first stage and mesophilic second stage.  A dual-stage system has the advantage of  higher biogas production from multi-feedstocks, but the design also requires a higher level of control.  To maintain operational stability, the Pilot AD uses a high-level programmable logic controller (PLC) to manage feeding, material transfer and temperature management.

Pilot AD (left view) Sept2015

Pilot-scale anaerobic digester by Quantalux/MSU

Over the next months, testing will take place at MSU’s Anaerobic Digester Research and Education Center (ADREC).  The goal is to find the correct mixtures of manure, food wastes and other organic wastes in order to maximize biogas production. Manure is available from the MSU dairy farm (located across the street from the digester) and we plan to use the Pilot AD to test a wide range of feedstocks over the next 24 months.

The Pilot AD was funded by the USDA/NIFA SBIR program, with matching funds from the Michigan Small Company Innovation Program.

Comments are closed.