Russian Journal of Applied Chemistry, 2011, Vol. 83, No. 6, pp. 1114−1119.
Pleiades Publishing, Ltd., 2010.
Original Russian Text
G.I. Kelbaliev, G.Z. Suleimanov, Phariborz A. Zoroﬁ , A.A. Gasanov, A.I. Rustamova, 2010, published in Khimicheskaya
Promyshlennost’, 2010, Vol. 88, No. 1, pp. 35−41.
Extraction Separation and Cleaning of Sewage Waters
by Organic Solvents with Recirculation
G. I. Kelbaliev, G. Z. Suleimanov, Phariborz A. Zoroﬁ , A. A. Gasanov,
and A. I. Rustamova
Institute of chemical problems of Azerbaijan National Academy of Science, Azerbaijan
Received October 2, 2010
Abstract—The technology of separation and cleaning of sewage waters from organic compounds by their
extraction from water solution by isopropyl ether with its further separation and return for reuse is proposed and
well founded. Results of the experimental investigations and kinetics of the liquid phase extraction of organic
compounds from sewage waters are reported.
The cleaning of sewage from various organic
compounds is an important, complicated, and multifactor
ecological, economic, and production problem for many
chemical plants. The cleaning processes of sewage from
various organic compounds are performed by different
methods: a) adsorption of organics with the use of
diverse zeolite adsorbents and activated carbon [1–3].
Adsorption methods of sewage cleaning are based on
sorption on both carbonized and zeolite surfaces, and
their efﬁ ciency increases after ﬁ nding solution for the
problem of regeneration; b) membrane technologies,
with the use of different synthesized membranes [4, 5],
plasma membrane and high frequency plasma chemical
technologies of cleaning of sewage from organic
and radioactive compounds, other nontraditional and
combined processes ; c) extraction methods of cleaning
of industrial sewage from various compounds [7, 8],
latex , phenol [10, 11], metal particles , organic
substances from sewage waters , etc. The cleaning
of the industrial sewage is possible also by combining
different above mentioned methods, in particular, by
membrane extraction method and by different processes
and by hardware design [12–14].
The object of this investigation was the analysis of
the condition of several industrial technologies, such
as modern varnish-and-paint industry, aiming to ﬁ nd
emissions to the environment and possibilities of their
utilization. It is necessary to mention that nowadays pig-
ment electrolytic compositions, like TiO
, as a rule
are used in dyeing factories for obtaining anticorrosion
protective ﬁ lms. Therewith electrolytic compositions con-
taining well and sparingly soluble (hydrophobic) organic
solvents with such components as butylglycogel, phe-
nylisopropylcarbonol, acetic acid, acetone, where their
composition reaches 25–35% (mass) from the total weight
of the taken electrolyte , are used for attainment of
higher indices of physicomechanical characteristics of
the protection layer.
According to  the use of desorption from adsorbents
turned out to be more reliable way for the return of organic
solvents and other liquid component to the technologi-
cal recycle; as a result of it, after the thermal treatment
within temperatures of 450–550°C it is possible almost
without losses to obtain adsorbed both water-soluble and
water-insoluble organic and compositional compounds.
But as showed the experimental investigations at higher
temperature desorption processes are accompanied by
several side physicochemical transformations of initial
organic compounds that is connected, obviously, with
catalytic possibilities of these adsorbents. From the