Letters

Letters 07-25-2016

Remember Bush-Cheney Does anyone remember George W. Bush and Dick Cheney? They were president and vice president a mere eight years ago. Does anyone out there remember the way things were at the end of their duo? It was terrible...

Mass Shootings And Gun Control The largest mass shooting in U.S. history occurred December 29,1890, when 297 Sioux Indians at Wounded Knee in South Dakota were murdered by federal agents and members of the 7th Cavalry who had come to confiscate their firearms “for their own safety and protection.” The slaughter began after the majority of the Sioux had peacefully turned in their firearms...

Families Need Representation When one party dominates the Michigan administration and legislature, half of Michigan families are not represented on the important issues that face our state. When a policy affects the non-voting K-12 students, they too are left out, especially when it comes to graduation requirements...

Raise The Minimum Wage I wanted to offer a different perspective on the issue of raising the minimum wage. The argument that raising the minimum wage will result in job loss is a bogus scare tactic. The need for labor will not change, just the cost of it, which will be passed on to the consumer, as it always has...

Make Cherryland Respect Renewable Cherryland Electric is about to change their net metering policy. In a nutshell, they want to buy the electricity from those of us who produce clean renewable electric at a rate far below the rate they buy electricity from other sources. They believe very few people have an interest in renewable energy...

Settled Science Climate change science is based on the accumulated evidence gained from studying the greenhouse effect for 200 years. The greenhouse effect keeps our planet 50 degrees warmer due to heat-trapping gases in our atmosphere. Basic principles of physics and chemistry dictate that Earth will warm as concentrations of greenhouse gases increase...

Home · Articles · News · Features · The Smell of Money: Pumping gas...
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The Smell of Money: Pumping gas from landfills

Harley Sachs - August 11th, 2005
Here in the U.P we used to call them
bear pits. They were the open garbage dumps where tourists occasionally would try to
put their kiddies on the backs of hungry
wild bears in the hopes of getting that great souvenir photo, sometimes with unhappy results.
Turns out that calling our dumps bear pits was a misnomer. The proper name for what are
now officially sanitary landfills is money pits. Not only can municipalities reap substantial rewards from tipping fees of $90 a ton,
but they can also mine those mountains
of trash for valuable gasses and turn them into electricity.
That’s what R.G. Engineering Company of Webberville, Michigan is doing for
their clients.
If a landfill is designed properly, that is. Lined first with a heavy plastic to prevent seepage into the ground water, all those goodies stay put, waiting to be harvested. In particular, what Jon Rabitoy, president of RPG, is after is trapped methane.
We’re all familiar with methane. It’s
the gas we generate ourselves after a meal
of bad chili or cauliflower. We don’t generate enough to utilize other than to light as
a bachelor party prank, but a sealed landfill has plenty.
It works like this: gas wells are sunk from 30 to 90 feet in the landfill and a gentle vacuum sucks out the methane. It is then run through a battery of converters. Usually four are set up, with three always running while a fourth gets routine maintenance.
According to a confidential report from Rabitoy’s company, “Neenah/Menasha, Wisconsin developed a landfill over a 10-year period. The landfill was filled, capped and a collection system was installed 18 months ago. Today the landfill generates and flares 1,000 ft3/min of landfill methane gas, where the gas temperature is 96 degrees F and is delivered at 1 psig pressure to the flare.”
The electricity generated by this system is incredibly cheap, 2 cents a kilowatt hour created from the landfill gas which costs half a cent per kilowatt hour to recover.
The electricity is then sold for 5.5 cents a kilowatt hour, and the project’s net revenue is estimated at $475,146, with a simple payback for the project of 9.25 years.
Other systems can recoup the initial costs in less time, 5.1 years. Even more rapid payback can be derived from animal waste.
My brother was once part owner of a pig farm where the noxious waste was turned into methane to provide energy. They generated enough electricity on the farm to provide all their energy needs. A feed lot may produce many tons of animal waste. Anyone who’s lived within nostril range of one of those can testify to the noxiousness of that, but the electricity generated from that animal waste can recoup the costs of the installation in little over a year.
The electricity these systems generate is sold to the electric grid to supplement power generated by conventional plants. No wonder a landfill can turn into a profit for a municipality! They can collect at both ends.
What’s clear is that waste products from feed lots and city landfills can put a significant dent in our need for energy. I suspect that the Keweenaw bears are disappointed to no longer have easy pickings at our garbage dump, but if we go the way of Neenah/Menasha and other municipalities we’ll not only get some extra income, but we’ll utilize some of those infamous greenhouse gasses. Oh, and turn the stink to cash. You never knew the smell of money had an odor like that.
 
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