climate-change-2017-scientifictracks-abstracts

8 / 60

Page 34
Notes:
conferenceseries.com
Volume 8, Issue 10 (Suppl) J Earth Sci Clim Change, an open access
ISSN: 2157-7617 Climate Change 2017
October 19-21, 2017
CLIMATE CHANGEOctober 19-21, 2017 | Rome, Italy
4 th World Conference on
Incremental control of world Albedo by massive salt leaching using the ancient purpose engineered
Qanat- Karez- Falaj technology to control fractional coverage of crystalline white salt precipitation
over vast areas of existing endorheic basins
David Bloch
M R Bloch Salt Archive, Israel
Huge desert endorheic basins with very substantial areas of flat evaporation pans were in operation specifically for the
precipitation of white crystalline sodium chloride. Maintaining a thin white crust layer of salt at critical hot seasons of
the year over these huge areas would increase the world albedo to enable precise control of the total short/long wave reflection,
in addition to the high albedo of the polar regions. The surface crust of an inland Sabkha basin typically is made up of layers
of salts that have re-crystalized and settled or precipitated during the evaporation process of controlled Qanat system flood
waters. Leached Salts dissolve quickly in a desert endorheic basin, and over a short intensely hot period, the process of re-
crystallizing the salts can produce purer and more concentrated, layered playa cakes. The dissolved salts leached out of the
underlying layers in the vast desert basin flats, are intermittently precipitated back on to the basin surface, predominately
sodium chloride crystals, one after the other leaving the familiar brilliant white salar playa. The original ancient engineered
design of the Qanat and its multiple aligned bore-holes was to control desert endorheic basin flooding without destroying
the salt mirror playa or causing erosion of the flat evaporation fields. The Qanat water was primarily needed to extract salt,
rather than for simple domestic irrigation. Additionally considerable quantities of subsoil brines existing in such basin water
tables would ensure brine supplies, as is demonstrated by the new potash plants in the Tarim basin using the ancient Qanat
technology. The grain size of white sodium chloride crystals may be controlled in a similar way to the fine Polar snow crystals
which also provide an improved albedo index.
Biography
David Bloch is the founder of M.R.Bloch SALT ARCHIVE – Owner of Chemical Engineering consultancy- MBL Separation Engineering. R&D - Research into Salt
[Sodium Chloride ] history, economics, religion, physiology, production and general influence upon the civilization of mankind.
David Bloch, J Earth Sci Clim Change 2017, 8:10(Suppl)
DOI: 10.4172/2157-7617-C1-036