100 Koshi Street, Ashgabat City, Turkmenistan

News

TECHNOLOGY FOR EXTRACTION OF TECHNICAL SALT NaCl FROM THE WASTE OF THE POTASH ORE COMPLEX IN GARLYK


22-07-2022

SDG Agenda 2030


...

Due to the far-sighted policy of our President, special importance is attached to ensuring ecological well-being, preservation of the natural environment, effective use of natural resources during the prosperity of our powerful state. The large-scale work conducted in this field has its positive results. Taking care of the environment and solving the important tasks set in this field are closely related to the well-being of current and future generations. From this point of view, the establishment of waste-free industries in the country, as well as waste processing, is considered one of the main areas in ensuring environmental safety.

One of the main enterprises producing potash fertilizers in Turkmenistan is Garlyk potash ore complex. The annual capacity of the Garlyk potash ore complex is 1.4 million tons.

Wastes left during the production process at the Garlyk potash ore complex are stored above ground near the plant in a specially designed salt collection facility

The amount of waste here is increasing year by year. As a result of this, in the future environmental problems such as air pollution, soil, surface and underground water pollution, reduction of biodiversity, disturbance of the balance of ecological systems will appear in the region.

That's why scientific research and experimental work is being carried out on the processing of waste and obtaining new products from it at the "Ecological Biotechnology" scientific production center of the Oguz han Engineering and Technology University of Turkmenistan since 2021. Waste processing is of great importance in ensuring ecological security in the region.

On the basis of the experiments, the technology of obtaining pure sodium chloride (table salt) from the waste was developed. The technology is low step, where no additional reagents are used. For the production process, industrial waste from Garlyk potash ore complex, purified water and muffle furnace are used.

It is obtained from the wastes in Garlyk potash ore complex by weighing it on an analytical balance and dissolving it in purified water at 100oC for 30 minutes on a magnetic stirrer. Then the temperature of the solution is reduced to 50oC and the potassium in the solution should be waited until it crystallizes. After the potassium in the solution crystallizes, the solution is filtered 3 times. Repeated filtration reduces the amount of potassium ions in the residue. The filtered solution is heated in a muffle furnace at 150oC for 1-2 hours. After heating the solution in a muffle furnace, water evaporates, and 98.29% sodium chloride is obtained. The amount of sodium chloride obtained was 92.5% (Figure №2).

High-concentration sodium chloride can be used in various sectors of the economy: paint production, baking soda production, chlorine-acid production, paper production, food industry and agriculture.

(science.gov.tm/files/tezis-1-tom-2022.pdf)

Sover SERDAROV, Student of Ecology and Nature Management major of Oguz han Engineering and Technology University of Turkmenistan