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[GreenYes] Re: NPR Story on Proposed Boston 'indoor' Composting Facility

Title: Re: [GreenYes] Re: NPR Story on Proposed Boston 'indoor' Composting Facility

I’d be interested in getting more information on the folks you know composting glycerin from diesel production. We’re working with a biodiesel consortium here helping them market collection and end use and the glycerin by-product is certainly a problem for converters.


David Biddle, Executive Director
Greater Philadelphia Commercial Recycling Council
P.O. Box 4037
Philadelphia, PA 19118

215-247-3090 (desk)
215-432-8225 (cell)

on 3/28/08 12:59 PM, Paul S Cantrell at pcantrell@no.address wrote:

You are correct and oil can 'suffocate' a compost pile, but there is some evidence among some folks I know that are successfully composting the glycerin byproduct of biodiesel production.  It is important to note that they do recover the methanol first, as it would kill even a vibrant pile.

On Fri, Mar 28, 2008 at 12:56 PM, Peter Spendelow <spendelow.peter@no.address> wrote:

Hi Nancy,

Cooking oil should be kept out of compost.  It can be used direcly
into making biodiesel, but doesn't provide anything for compost.  To
make good compost, you need something that only partially decomposes
in a compost pile, so the compost will have good rich humic material.
Most plant tissue is good for this, as the lignins in the cell walls
which are bound to the cellulose of the cell walls take a very long
time to degrade, leaving a material that can help soil structure and
add good organic matter to the soil.  Cooking oil does not provide any
solid structure and may worsen soil structure, and when it decomposes,
it goes pretty much completely to carbon dioxide and water, leaving
nothing left as compost.  So - keep cooking oil out of of your home
composting pile, and try to get used cooking oil into an oil and
grease collection system that can convert the material to biodiesel.

Peter Spendelow

On Mar 26, 7:19 pm, "Nancy Poh" <greenbeingna...@no.address> wrote:
> This is good as it also helps get rid of food scraps.  I remember reading
> that cooking oil can also be recycled in the process of making compost.
> Nancy

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