On Jun 9, 8:46 pm, "John Ewing" wrote:
> "Bernd Felsche"
innovative.iinet.net.au> wrote in message
>
> news:6u6vh5xo82.ln2@innovative.iinet.net.au...
>
>
>>> "John Ewing" wrote:
>>>"Michael Henry"
gmail.com> wrote:>>>> Stealth Pilot wrote:
>
>>>>> the other thing I like about high fuel prices is that the chinese have
>>>>> to pay them as well. that'll slow the buggers down. maybe the jobs
>>>>> will stop being exported over to them in the long run.
>
>>>> That's a pretty archaic view! It is Chinese demand for our natural
>>>> resources which is making the Australian dollar so strong! As Ben Lee
>>>> said
>>>> "We're all in this together"
>
>>>> I'm of the opinion that high fuel prices are good for another reason: it
>>>> makes alternative fuels more viable. I look forward to the day when
>>>> we're
>>>> all running aero-diesels burning biofuel. (The current perception by
>>>> consumers that biofuel is responsible for high food prices is rubbish.
>>>> Destruction of native forests for the planting of feedstock is a bigger
>>>> issue. We'll work it out eventually...)
>
>>>Skip biofuel ... go straight to zero pollution hydrogen powered vehicles
>
>
>> Zero-pollution? How are you going to get the hydrogen?
>
> From water probably using solar cells. Recent developments have
> dramatically increased their efficiency, and there is likely to be further
> improvements.
>
> Safely? Onto the aircraft?
>
> Safely? Innovative reckoning would suggest liquid hydrogen :)
> Hope we are not going to recount the old "hydrogen is too dangerous - look
> what happened to the airships"
> To be honest I was considering that we'd get surface vehicles converted
> before we try aircraft.
> I am not claiming it is a proven or fully researched option at the present
> time, but it has greater potential than most other alternative energy
> sources.
>
>> Hydrogen, unless it's been extracted directly from fossil sources,
>> is only a storage medium for the energy needed to produce it. And at
>> that, it's certainly not perfectly efficient.
>
> Very few things in life are perfectly efficient.
> Sorry - you've lost me. Not sure what your point is.
>
> Cheers,
> John
G'Day John Stealth Bernd and Saccas and others
Re hydrogen power which is a bit of a holy grail out in these parts
being on the edge of a desert and all and needing an additional
350megs of power production within next 32 months :(
Western power SEDO and others not withstanding and none listening to
Rise (that will get saccas attention I bet )
It may be worth while going down this kind of research path . I think
one chemist out near Kal' is close to breaking
through on a simple mechanical process (think of a reverse osmosis
water desal' unit only the reaction with bacteria within a membrane
gives you a simple sort of hydrogen fuel cell ------ any way chase
this blokes research down also from Japan
Water Science and Technology Vol 36 No 6-7 pp 41–47 © IWA Publishing
1997
Studies on hydrogen production by continuous culture system of
hydrogen-producing anaerobic bacteria
Naoaki Kataoka*, Akiko Miya* and Koichi Kiriyama**
*Biotechnology Laboratory, Center for Advanced Technology, Ebara
Research Co. Ltd, 2-1, Honfujisawa 4-chome, Fujisawa-shi Kanagawa 251
Japan
**Research and Development Division, Ebara Corp., 11-1 Haneda Asahi-
cho Ota-ku, Tokyo 144 Japan
ABSTRACT
Characteristics of continuous hydrogen production and fatty acid
formation by an active hydrogen-producing anaerobic bacterium,
Clostridium butyricum strain SC-E1, was examined under vacuum and non-
vacuum culture systems. The continuous cultures were performed using
1040 ml anaerobic glass bottles containing 600 ml of medium including
glucose and polypeptone at a concentration of 0.5 or 1.0%% as
substrate, and were conducted at pH 6.7, hydraulic retention time
(HRT) 8h, and 30oC on a reciprocal shaker. The non-vacuum cultures at
16 days of incubation showed 2.0 to 2.3 mol-H2/mol-glucose and 1.4 to
2.0 mol-H2/mol-glucose of hydrogen productivity at 0.5 and 1.0%% of
substrate concentration, respectively. The vacuum cultures conducted
at 0.28 atm gave 1.8 to 2.3 mol-H2/mol-glucose and 1.3 to 2.2 mol-H2/
mol-glucose of hydrogen productivity at 0.5 and 1.0%% of substrate
concentration, respectively. The fatty acid production from the vacuum
cultures exhibited approximately the same yield of fatty acids as
those of the non-vacuum cultures. It was concluded that the maximal
hydrogen production potential by anaerobic bacteria is 1.3 to 2.2 mol-
H2/mol-glucose, which is less than 50%% of theoretical. In addition,
the total hydrogen production rate by a two-stage bioreactor
consisting of a 1-litre anaerobic fermenter (HRT 10h) and a 4-litre
photobioreactor (HRT 36h) feeding at 2.4-litre of 1.0%% glucose per day
was estimated at 1.4 to 5.6 mol-H2/mol-glucose, which is 12 to 47%%
theoretical.
Old stealth may be a pain in the bum but glad was not the person his
original words indicated .
However, he is welcome to come and pat our pilot photo bio reactor
when it is finished in about December out here
Of course it may not work but at least we are having a go (no bloody
rain so there goes the grain crops )
Nice airfield even for a shitty tailwind :)
Re China my simple take is if you can't beat em Join em :)
