ISSN 1070-4272, Russian Journal of Applied Chemistry, 2015, Vol. 88, No. 12, pp. 1920−1922. © Pleiades Publishing, Ltd., 2015.
Original Russian Text © F.G. Ishmuratov, E.I. Koptyaeva, A.I. Voloshin, A.G. Telin, Yu.V. Tomilov, N.E. Nifant’ev, V.A. Dokichev,
2015, published in Zhurnal
Prikladnoi Khimii, 2015, Vol. 88, No. 12, pp. 1672−1675.
INORGANIC SYNTHESIS AND INDUSTRIAL
Arabinogalactan as Effective Inhibitor
of Calcium Carbonate Scaling
F. G. Ishmuratov
, E. I. Koptyaeva
, A. I. Voloshin
, A. G. Telin
Yu. V. Tomilov
, N. E. Nifant’ev
, and V. A. Dokichev
Ufa State Aviation Technical University, ul. Karla Marksa 12, Ufa, Bashkortostan, 450077 Russia
Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, Leninskii pr. 47, Moscow, 119991 Russia
Ufa Institute of Chemistry, Russian Academy of Sciences, pr. Oktyabrya 71, Ufa, Bashkortostan, Russia
Received November 2, 2015
Abstract—Arabinogalactan inhibits the crystallization of calcium carbonate on the surface of stainless steel in a
supersaturated aqueous solution at 80ºC. In the presence of arabinogalactan, the size of calcium carbonate crystals
decreases and their structure changes. Arabinogalactan is a “green” scaling inhibitor.
One of the most frequently occurring difﬁ culties
in oil-well operation is the scale buildup on the well
equipment and in the bottom-hole formation zone [1−4].
Historically, the dominant reagents for scaling inhibition
in oil extraction have been phosphorus-containing
substances and synthetic water-soluble polymers [3, 5−7].
The main disadvantages of these are the toxic effect
on the environment and nonbiodegradability. Modern
tendencies in the development in the ﬁ eld of oil extraction
and rational nature management necessitate creation of
“green” reagents for oilﬁ eld chemistry, the application
of which will signiﬁ cantly reduce the adverse effect on
Among the wide variety of organic natural com-
pounds, polysaccharides are the most impressive in their
biomass natural “products,” which are considered to be,
on the whole, safe for human nutrition and do not exhibit
any signiﬁ cant toxicity and mutagenic activity . Poly-
saccharides possess unique properties and there is good
reason to believe that studies of this group of compounds
may lead to development of new effective and nontoxic
“green” oilﬁ eld reagents for inhibition of scaling [9, 10].
The goal of our study was to examine a natural
polysaccharide, arabinogalactan, as a new highly efﬁ cient
“green” scaling inhibitor.
As a model of stratal water served water (model stratal
water, MSW) of the following ion composition (mg L
1525.50, prepared from CaCl
NaCl, and NaHCO
salts of analytically pure grade.
The size of the CaCO
crystals being formed was
recorded with a Shimadzu SALD-7101 laser diffraction
particle size analyzer.
The microstructure of samples was analyzed by ﬁ eld-
emission scanning electron microscopy (FE-SEM) on a
Hitachi SU8000 electron microscope. Images were taken
in the mode in which secondary electrons were recorded
at accelerating voltage of 2 kV and working distance of
4−5 mm. The analytical measurements were optimized
in the framework of the previously described approach
. Prior to measurements, the samples were placed
on the surface of an aluminum table with diameter of
25 mm, ﬁ xed there with a conducting glue, and covered
with a 7-nm-thick conducting metal (Pt/Pd, 80/20) layer
by the previously described magnetron sputtering method
. The morphology of the samples was examined with
consideration for the correction for surface effects caused
by deposition of the conducting layer .