[Digestion] Digestion Digest, Vol 5, Issue 9

[Duncan Martin]

Good to hear from you again Mel - but I have a question for you....

WHY are "High Solids and High Rates mutually exclusive"

Is that a law of nature or just an artefact of how we've been doing things 
up to now?

Clearly, the highest rates will be obtained with 100% soluble substrates, 
which are inherently incompatible with very high solids concns.

However, for the SAME substrate, I am not convinced.

Best regards

Duncan J Martin

Chair
Republic of Ireland Centre
Chartered Institution of Wastes Management,

================================
CONTACT DETAILS
Duncan J Martin, PhD, CEng, CSci, MIEI, MCIWM, MIChemE
24 Townsfield, Cloughjordan, N Tipperary, Ireland
Mobile: +353 86 8377 906
Email: duncanjmartin at eircom.net
================================






----- Original Message ----- 
From: <finstein at envsci.rutgers.edu>
To: <digestion at listserv.repp.org>
Cc: <stuart at oaktech-environmental.com>
Sent: Saturday, November 11, 2006 6:45 PM
Subject: Re: [Digestion] Digestion Digest, Vol 5, Issue 9


Greetings to all subscribers,

Regarding "high solids content" digestors alluded to below, please note
that in fact High Solids and High Rates are mutually exclusive. The point
is thoroughly explored elsewhere: <www.oaktech-environmental.com> click on
"news & events", then click on the item dated 29 January 2006 - see
especially Part 3.

The posted abstract on the Oaktech website reads:

"ArrowBio USA Represented by Professor Melvin Finstein submitted his
response to the URS Reports on future waste technologies for Los Angeles.
Mel's response is critical to a report that bundles all anaerobic
digestion systems into the same category and discounts the clear benefits
of advanced anaerobic digestion."

It might be noted that ArrowBio is a semi-finalist contender in Los
Angeles County and elsewhere. Much background material is given in the 29
January 2006 "Critique."

Regards to all,

Mel Finstein


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> Today's Topics:
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>    1. high rate digester (AKBAR SHABANI)
>    2. Re: high rate digester (Bjorn Dahlroth)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 10 Nov 2006 21:05:27 -0800 (PST)
> From: AKBAR SHABANI <a_shabanikia at yahoo.com>
> Subject: [Digestion] high rate digester
> To: "ÔÈ~å È&#1740,æÇÒ&#1740," <digestion at listserv.repp.org>
> Message-ID: <20061111050527.66358.qmail at web52208.mail.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> dear hi   I want to make digesteres  for biogas production from high
> concenterate matterial  with totale solides about 20-40 %.if it possible
> please help me
>
>   with thank
>   A - SHABANIKIA


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