Letters

Letters 05-02-2016

Facts About Trails I would like to correct some misinformation provided in Kristi Kates’ article about the Shore-to-Shore Trail in your April 18 issue. The Shore-to-Shore Trail is not the longest continuous trail in the Lower Peninsula. That honor belongs to the North Country Trail (NCT), which stretches for over 400 miles in the Lower Peninsula. In fact, 100 miles of the NCT is within a 30-minute drive of Traverse City, and is maintained by the Grand Traverse Hiking Club...

North Korea Is Bluffing I eagerly read Jack Segal’s columns and attend his lectures whenever possible. However, I think his April 24th column falls into an all too common trap. He casually refers to a nuclear-armed North Korea when there is no proof whatever that North Korea has any such weapons. Sure, they have set off some underground explosions but so what? Tonga could do that. Every nuclear-armed country on Earth has carried out at least one aboveground test, just to prove they could do it if for no other reason. All we have is North Korea’s word for their supposed capabilities, which is no proof at all...

Double Dipping? In Greg Shy’s recent letter, he indicated that his Social Security benefit was being unfairly reduced simply due to the fact that he worked for the government. Somehow I think something is missing here. As I read it this law is only for those who worked for the government and are getting a pension from us generous taxpayers. Now Greg wants his pension and he also wants a full measure of Social Security benefits even though he did not pay into Social Security...

Critical Thinking Needed Our media gives ample coverage to some presidential candidates calling each other a liar and a sleaze bag. While entertaining to some, this certainly should lower one’s respect for either candidate. This race to the bottom comes as no surprise given their lack of respect for the rigors of critical thinking. The world’s esteemed scientists take great steps to preserve the integrity of their findings. Not only are their findings peer reviewed by fellow experts in their specialty, whenever possible the findings are cross-checked by independent studies...

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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