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feasible from jatropha’s seeds. can be used also in other part of the world, in
One way to use the water out of Allam cycle is to be desert areas with lot of shale gas like Algeria,
used to irrigate the plants. KSA or potentially China.
Power from Allam cycle and solar pannels can
be used by the grid and/or to be used in an elec-
trolyzer to generate green hydrogen. The water out Conclusions
of Allam cycle can be also used in the electrolyzer The article considers the idea to combine diffe-
to generate oxygen and hydrogen. Oxygen out of rent technologies; all these technologies must be
electrolyzer will be used by the Allam cycle itself analyzed from technical and economic point of
whilst H2 could be used locally. Considering that view.
H2 is not easy to be moved, also a steel factory The paper is just a hint to develop something really
(that needs H2) can be considered in a wider buffa- out of the box.
lo’s concept. The scheme in picture 2 shows brie- Author thanks Professor Tsuyoshi Ishida of Kyoto
fly the “Buffalo’s Concept”. University, Giuseppe Messina of Enea and Daslav
Brkic for support and advices.
The “Buffalo’s Concept” is a synergy of renewables
and fossil fuels based on new technologies curren-
tly available. References
From a desolate wasteland we could have the fol- Coltri, C. and Ishida, T.: Potential synergy between
lowing outcome: Allam cycle and extraction of shale gas with super-
• Power generation from different sources (Al- critical CO , Impiantistica Italiana, pp.14-20, -2020
2
lam cycle and solar) without CO emissions in Los Alamos Laboratories- Middleton, Viswana-
2
the atmosphere. than, Currier, Gupta “CO as a fracturing fluid: Po-
2
• Shale gas production tential for commercial-scale shale gas production
• H2 production (potentially to be used by a lo- and CO sequestration”- 2014
2
cal steel factory?) Becker, K., Wulfmeyer, V., Berger, T., Gebel, J.,
• Biofuel refinery from jatropha’s seeds and Münch, W.: Carbon farming in hot, dry co-
• Further CO sequestration by jatropha curcas astal areas: an option for climate change mitiga-
2
• All these activities with negative CO emissions tion, Earth Syst. Dynam., 4, 237–251, https://doi.
2
(because jatropha absorbs CO as all plants) org/10.5194/esd-4-237-2013, 2013.
2
• This Buffalo’s concept fits clearly for the Ame- Parawira “Biodiesel production from Jatropha cur-
rican plains in the first picture; potentially it cas: A review “- 2010.

Carlo Coltri

Carlo Coltri has a degree in Engineering Management from the Politecnico di Milano.
Since 2014 he has published some articles about shale gas and potential alternatives to hydraulic fra-
cking, including the use of supercritical CO .
2

Il “Concetto del bufalo”: nessuno

spreco attraverso la potenziale sinergia

fra differenti tecnologie

L’articolo presenta possibili sinergie tra diverse tecnologie per produrre energia con potenziali
emissioni negative di CO2.
L’approccio olistico dell’articolo include: produzione di energia basata su ciclo Allam, estrazione di
shale gas con CO2 supercritica e conseguente cattura di CO2, coltivazione di jatropha (ulteriore
Picture 2 cattura di CO2) e possibile produzione di biocarburanti dai semi della pianta, pannelli solari,
elettrolizzatore per produzione di idrogeno e possibile interazione con il ciclo Allam.

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