[Digestion] AD of Water Hyacinth

[Anand Karve]

I have the following suggestion: Biphasic digestion, in which the first
phase (anaerobic) converts the water hyacinth into lactic acid. The lactic
acid is then fed into the regular anaerobic digester. This would be an
ideal solution for not only water hyacinth, but for all biodegradable
material. One need not even segregate the feedstock, as the non-digestible
matter would remain in the first phase, which can be periodically opened
and cleaned.
Yours
A.D.Karve

***
Dr. A.D. Karve

Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)

Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)

On Thu, Oct 8, 2015 at 2:00 PM, Rex Zietsman <rex at whitfieldfarm.co.za>
wrote:

> Hi Alex and other Listers
>
> I have an article on the digestion of hyacinth that I downloaded years ago.
> Anyone interested in it, please email me and I will send you a copy.
>
> Kind regards
> Rex
>
> Rex Zietsman
> Principal Consultant
> Pr Eng, BSc Eng (chem), MBA
> Mobile:    +27 82 457 7311
> Fax:           +27 86 726 7028
> Email:       rex at whitfieldfarm.co.za
> Website: http://rex370.wix.com/whitfieldconsult
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 6 Oct 2015 20:17:39 -0500
> From: Alex Eaton <alex at sistemabiobolsa.com>
> To: For Discussion of Anaerobic Digestion
>         <digestion at lists.bioenergylists.org>
> Subject: Re: [Digestion] Water hyacinth
> Message-ID:
>         <CAMzKU3Fg1-Q+W5aZ5WYLk9Gqd0D6=
> 7yeKwqengBGeD2iNeSNPw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Dear Dr. Karve,
>
> Could you share any loading rates or retention times related to water
> hyacinth?
>
> Also, currently the coast of Mexico is in the middle of a massive seaweed
> bloom,  and it is clogging up all the beaches and ports of the coast.  Has
> anyone ever worked with a sea weed? Obviously it would a high salt content,
> and I suspect some undigestable portions, but maybe the energy production
> could break even with efforts to clean up the area. Any thoughts or
> experiences?
>
> Best,
>
> Alex
>
> On Oct 6, 2015 8:11 PM, "Anand Karve" <adkarve at gmail.com> wrote:
>
> > Water bodies in several tropical countries (including India) are
> > invaded by a floating aquatic weed called water hyacinth. In many
> > cases it covers the entire water surface. Its leaves enhance the
> > evaporative surface of the water body and thus cause rapid depletion
> > of water. In most countries it is considered a menace, but  it can
> > very easily be converted into biogas. All one needs is a biphasic
> > digester. in which the first phase converts the material into organic
> > acids, which then flow into the second phase, which is the actual
> > biogas digester.  Water hyacinth should therefore be considered to be a
> useful source of clean energy and not a menace.
> > Yours
> > A.D.Karve
> > ***
> > Dr. A.D. Karve
>
>
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>
>
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