Page 84 - Impiantistica Industriale

NEW SYNERGIES

methane (CH ), this effect would result incre- 20m could potentially adsorb and sequester up to
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ase of production of CH4 from the shale and 4.8 ´ 105 cubic meters of CO . Thus, CO -based
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also chemically trap CO2 within the shale. fracturing may offer significant potential for CO
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(c) The use of CO as a fracturing fluid would eli- sequestration during the fracturing phase. After
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minate formation damage and residual fractu- production has concluded, additional CO seque-
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ring fluid. stration could be achieved by treating the fractured
(d) The use of pure CO without any additives can shale as a storage reservoir. There is a particularly
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realize HF free from environmental contamina- large CO2 mitigation potential when hydraulic frac-
tion. turing is coupled with anthropogenic CO sources”.
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(e) In a reservoir getting easier CO rather than The Allam cycle plus shale gas extraction with su-
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water, for example, that in a desert, HF using percritical CO is just the initial part of the buffalo’s
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CO solves the problem of water shortage.” concept. We could consider to install a solar plant,
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clearly renewables, therefore generating power wi-
The capacity of CO sequestration based on this thout CO emissions.
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concept has been theoretically calculated by Los Beneath solar pannels a special plant could be
Alamos Laboratories (2) “ Following the produc- planted, jatropha curcas; jatropha curcas is a poi-
tion phase, if one assumes the shale formation is sonous shrub that needs very little water; the study
ultimately pressurized with CO2 to 15 MPa, the “Carbon farming in hot, dry coastal areas” shows
adsorption calculations reported in Figure 9 sug- that one hectare cultivated with this shrub could
gest that as much as 9.43 cubic meters of CO capture between 17 and 25 tons of CO per year.
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could be adsorbed per metric ton of shale. Thus, (3)
a fully accessible shale seam 1000m by 300m by Potentially (4) the production of biodiesel could be

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78 78 Impiantistica Italiana - Settembre-Ottobre 2021