part of beer, Magic Hat has a two-to-one waste to product ratio.
As Eric Fitch, a mechanical engineer and the CEO and founder
of Purpose Energy in Arlington, Ma., explains, up until the com-
pany began its bioenergy endeavor, most of the waste byproduct
was trucked off site for use as livestock feed or for pet food.
Since June 2011, an anaerobic digester designed and man-
ufactured by Purpose Energy has been supplying the brewery
with 220 k W of biogas-generated electricity.
“We have three different bioreactors integrated into one tank
Such concepts are also familiar to the Alaskan Brew-
at Magic Hat,” said Fitch. “Solids go into the frst tank and break
down into soluble sugars and acids. Then those sugars and acids
go into the second and third reactors and are converted into
Fitch says his company’s system takes Magic Hat’s waste and
reduces the cost of byproduct remediation by over 60 percent.
The methane gas that is produced is, in turn, run into a
power plant that makes heat and electricity used in the
brewery. As a result, Fitch estimates that magic hat has
replaced about a third of its fossil fuel-derived electricity
with renewable biogas.
At 1,000 miles north of Seattle in the far-fung southeast Alaska panhandle, there’s little or no livestock on
the Alexander archipelago. Thus, for nearly two decades,
the Juneau-based Alaskan Brewing Company has shipped
its spent grain to Pacifc Northwest farmers and ranchers to
use primarily as feed for their cattle.
But since February of this year, the craft brewer, which distributes throughout 14 western states including Alaska, has
been using its dried spent wheat, malt and barley grain to fre
the brewery’s boiler kettles, says Andy Kline, communications
manager at the Alaskan Brewing Company.
As a result, the brewery, which produces 140,000 barrels of
beer annually, projects its 4,500 tons of annual spent grain fuel
will save over 1. 5 million gallons of fuel oil over the next 10 years,
while reducing the company’s fuel oil consumption by 70 percent.
It’s likely that we’ll see more brewers fgure out that recycling
their waste and using it as energy helps to bring down production
costs. But tobacco as biofuel may be a harder sell to farmers used
to growing the crop for generations of smokers. The idea might
just need the marketing smarts of a latter-day Don Draper. à
Helius CoRDe ltd., a
joint venture between
Helius Energy, Rabo
Project Equity, and the
Combination of Rothes
this spring that
it had opened
a $95 million
plant in the
product that can be used
as animal feed.
plant will combust
leftover draff (a whisky
byproduct) from the
distillery plus wood chips
in a 7.2-MW combined
heat and power plant that
will produce electricity,
heat and Pot Ale Syrup, a