DESIGN OF AMORPHOUS MANGANESE OXIDE MATERIALS AS A SORBENT OF STRONTIUM MARSAGISHVILI T.A., KIRILLOV S.A.*, CHAGELISHVILI V.A., ANANIASHVILI N.SH., DZANASHVILI

DESIGN OF AMORPHOUS DESIGN OF AMORPHOUS MANGANESE OXIDE MANGANESE OXIDE

MATERIALS AS A SORBENT OF MATERIALS AS A SORBENT OF STRONTIUMSTRONTIUM

MARSAGISHVILI T.A., KIRILLOV S.A.*, CHAGELISHVILI V.A., MARSAGISHVILI T.A., KIRILLOV S.A.*, CHAGELISHVILI V.A., ANANIASHVILI N.SH., DZANASHVILI D.I., LESNICHAYA T. V.*, ANANIASHVILI N.SH., DZANASHVILI D.I., LESNICHAYA T. V.*,

MACHAVARIANI M.N.MACHAVARIANI M.N.

Institute of Inorganic Chemistry and Electrochemistry of Georgian Institute of Inorganic Chemistry and Electrochemistry of Georgian Academy of Sciences,Academy of Sciences,

11, Mindeli str., Tbilisi, 0186, Georgia, 11, Mindeli str., Tbilisi, 0186, Georgia, [email protected]@geo.net.ge

*Institute for Sorption and Problems of Endoecology, Ukrainian National *Institute for Sorption and Problems of Endoecology, Ukrainian National Academy of SciencesAcademy of Sciences

13, General Naumov St., 03680 Kyiv, Ukraine, 13, General Naumov St., 03680 Kyiv, Ukraine, [email protected]@i.kiev.ua

The basic sources of The basic sources of pollutionpollution of of the Black sea arethe Black sea are::

• From the rivers, which flow into the sea,

• From air during rain and without rain,

• The sources are on the surface of the sea (ships), in the volume and at the bottom of the sea.

PPollution of the Black sea through ollution of the Black sea through the riversthe rivers

• Unpurified drains of infectious hospitals and other medical institutions;

• Application in agriculture of heightened doses of fertilizers and manure, which get into rivers during the rain.

• Unpurified domestic waste;• Dumps, where are found toxic substances, for

example lead and plumbous materials (used accumulators);

• Industrial waste from enterprises without corresponding purification and at accidents.

The reason of existence of the problem:The reason of existence of the problem:Unpurified drains of infectious hospitals and other Unpurified drains of infectious hospitals and other

medical institutionsmedical institutions

• Bad equipment for purification of waste water

• Bad technology for purification of waste water

• Problem with electric power

• Problems with chemicals

Solution of the problem:Solution of the problem:Unpurified drains of infectious hospitals and other Unpurified drains of infectious hospitals and other


• The new technology, which is based on usage of:

1. Filters2. Membranes3. Ozone

- Institute of Inorganic Chemistry and Electrochemistry of Georgian Academy of Sciences

- Institute of Membranes

Solution of the problem:Solution of the problem:Unpurified drains of infectious hospitals and other Unpurified drains of infectious hospitals and other


The reason of existence of the problem:The reason of existence of the problem: Application in agriculture of heightened doses of Application in agriculture of heightened doses of

fertilizers and manure, which get into rivers during the fertilizers and manure, which get into rivers during the rain.rain.

• Application of excessive quantity of fertilizer

• Absence of quality control of agricultural production• Cutting down of forests for obtaining of fire wood

(it results in soil erosion)• Inclined plane of agricultural land areas

(54% of total agricultural areas has angle > 30º)

Solution of the problem: Solution of the problem: Application in agriculture of heightened doses of Application in agriculture of heightened doses of

fertilizers and manure, which get into rivers during fertilizers and manure, which get into rivers during the rain. the rain.

• The new technology, which is based on usage of worms “Californian red”

• It is possible to receive 100 kgs of protein and 600 kgs of biohumus from one ton of manure

- LTD “Eco-progress”- LTD “Elkana”

The reason of existence of the problem:The reason of existence of the problem:Unpurified domestic wasteUnpurified domestic waste

• Bad condition of a sewerage system

• Absence of purifying facilities

• Problems with the electric power

Solution of the problem: Solution of the problem: Unpurified domestic wasteUnpurified domestic waste

• Usage of new materials for production of sewer pipes (sewer pipes from plastic, reinforced basalt fibre)

• Building of purifying facilities with usage of new technologies and new materials

Solution of the problem:Solution of the problem: Unpurified domestic wasteUnpurified domestic waste

• Sewer pipes from plastic, reinforced basalt fibre





The reason of existence of the problem:The reason of existence of the problem:

Dumps, where are found toxicDumps, where are found toxic substancessubstances

• Absence of monitoring on dumps where may get toxic waste

• Imperfect technologies, leaving toxic waste

• Absence of factories on complex processing of waste, particularly plumbous

Solution of the problem: Solution of the problem:

Dumps, where are found toxicDumps, where are found toxic substancessubstances

• Building of factories on processing of domestic garbage

• Building of factories on processing of toxic waste • Building of factories for processing of used

accumulators and for production of new accumulators

- Institute of Inorganic Chemistry and Electrochemistry of Georgian Academy of Sciences

The reason of existence of the problem:The reason of existence of the problem:Industrial waste from enterprises without Industrial waste from enterprises without

corresponding purification and at accidentscorresponding purification and at accidents

• Abandoned in dumps ore with toxic substances (for example As)

• Accidents on railway with spillage of oil in rivers

• Accidents on pipelines with spillage of oil in rivers

Solution of the problem:Solution of the problem: Industrial waste from enterprises without Industrial waste from enterprises without


• Development of technology on purification of industrial emissions from toxic components

• Development of technology on purification of water from oil

• Development of technologies on purification of industrial emissions from radionuclides and obtaining of pure potable water

- Mining Institute, Academy of Sciences of Georgia

- Institute of Inorganic Chemistry and Electrochemistry of Georgian

Academy of Sciences

Solution of the problem: Solution of the problem: Industrial waste from enterprises without Industrial waste from enterprises without


- Tbilisi State University

PPollution of the Black seaollution of the Black sea ffrom air during rain and rom air during rain and without rainwithout rain

The reason of existence of the problem:

• Industrial emissions in atmosphere • Exhaust gases of automobiles • Soil erosion (up to 600 kg of soil is lost

from one hectare of ground) • Large-scale man-caused accidents of

chemical enterprices


The reason of

existence of

the problem:


Solution of the problem:

• Application of ecologically pure technologies with waste purification

• Application of high quality fuel • Improvement of technical condition of motor transport • Transition of motor transport and sea transport on

alternative or mixed fuel (natural gas, hydrogen, etc.) • Application of modern agrotechnologies on control of soil

erosion

The sources are on The sources are on thethe surface surface of of the sea (ships)the sea (ships), , in the volume andin the volume and at the bottom at the bottom of the of the seasea..

The reason of existence of the problem:

• Tankers for oil transportation (ballast tanks)

• Accidents of tankers for oil transportation

• Accidents of ships with toxic load

• Chemical weapons drowned at the bottom of the sea (60 000 tons)

• H2S


Solution of the problem:

• Mathematical calculations of distribution of impurities on surface and in volume of the Black Sea.

- Institute of Geophysics of Georgian Academy of Sciences

• Sorbents for absorption of oil spilled on the water surface

• Investigation of the problem. Possibility of application of H2S close to sources where concentration of H2S is high


Solution of the problem:• Technology for obtaining of foam plastic having

high sorption properties is developed (sorption capacity is from 2 up to 10 g/g, foam plastic is remarkable for cheapness, simplicity of production). By preliminary laboratory investigations extent of purification reaches almost 100%.

• Proposed sorbents may be regenerated up to 10 cycles. Used sorbents may be used in building and production of asphalt

- Institute of Physical and Organic Chemistry of Georgian

Academy of Sciences

Design of Amorphous Design of Amorphous Manganese Oxide Based Manganese Oxide Based Composite Materials for Composite Materials for Wastewater PurificationWastewater Purification

STCU GR85 ProjectSTCU GR85 Projectperformed byperformed by

Institute for Sorption and Problems of Endoecology (ISPE, Kiev, Institute for Sorption and Problems of Endoecology (ISPE, Kiev, Ukraine)Ukraine)

andand

Institute of Inorganic Chemistry and Electrochemistry (IICE, Institute of Inorganic Chemistry and Electrochemistry (IICE, Tbilisi, Georgia)Tbilisi, Georgia)

STCU GR85 Project: STCU GR85 Project: Design of Amorphous Manganese Oxide Based Composite Materials forDesign of Amorphous Manganese Oxide Based Composite Materials for

Wastewater PurificationWastewater Purification

Aims of the project:

• Optimal design of composite amorphous manganese oxide based materials with prescribed absorption properties, and

• Employment of these materials in(i) Water management;

(ii) Energy production;

(iii)Catalysis.



Water management:

• Sorption of 90Sr and 235U as major radiotracer pollutants from drinkable water and wastewater;

• Possible use of sorbents for sorption of other harmful cations (Cu2+, Cd2+, etc.).



Water management

Effective mixed MnO2-TiO2 sorbents for Sr2+ enabling one to operate in neutral solutions;

Irradiated MnO2 based sorbents for Sr2+ and Cu2+ cations.



Water management

Substitution of the H+ ions of surface hydroxyl groups by Sr2+ cations could be clearly uncovered by means of differential infrared spectroscopy.



Water management

The distribution coeffic-ients in neutral and acidic media are better than for the best commercially available sorbents;

The product is cheaper than the best commercially available sorbents;

Utilization of used sorbents can be performed by means of calcination at 400 C.



Other significant results• An ageing effect (an increase of the sorption capacity

upon storage) has been discovered, which is caused by dehydration of samples and rearrangement of remaining hydroxyl groups;

• Theoretical predictions and experimental proofs of the role of raw materials in the properties of materials obtained;

• Theoretical models of the process of physical and chemical adsorption on the surface of an amorphous solid.



Dissemination of results• Sorbents for Cu2+ are to be tested at

Madneuli plant (Georgia) in wastewater purification processes;

Mail-list of Scientists and Institutions …Mail-list of Scientists and Institutions …

Documents

DESIGN OF AMORPHOUS MANGANESE OXIDE MATERIALS AS A SORBENT OF STRONTIUM MARSAGISHVILI T.A., KIRILLOV S.A.*, CHAGELISHVILI V.A., ANANIASHVILI N.SH., DZANASHVILI