Yerlan Bekeshev
@gh-ecology.kz
Aerospace comittee Ministry of Digital Development, Innovations and Aerospace Industry of the Republic of Kazakhstan Branch office of the Republican State Enterprise on the right of economic management «Infracos» in Almaty
Aerospace comittee Ministry of Digital Development, Innovations and Aerospace Industry of the Republic of Kazakhstan Branch office of the Republican State Enterprise on the right of economic management «Infracos» in Almaty
RESEARCH, TEACHING, or OTHER INTERESTS
General Earth and Planetary Sciences, General Environmental Science, Ecology, Evolution, Behavior and Systematics, Ecology
Scopus Publications
Scopus Publications
Yerlan Bekeshev, Bibigul Mirkarimova, Zhazira Zhumabekova, and Laila Jumabayeva
Springer Science and Business Media LLC
AbstractStudies of the influence of hydrocarbon rocket fuel kerosene T-1 on the physical and geochemical properties were carried out in laboratory circumstances on different types of soils: brown semi-desert soil designated as zone (U-25) located in Central Kazakhstan, mountainous brown desert soil zone (U-30) located in East Kazakhstan, and a model soil standard (control soil). The soil was treated with various concentrations (0.002–150.0 g/kg) of hydrocarbon rocket fuel kerosene T-1, while the contact time was 3, 10, and 30 days. Pollution with kerosene T-1 in concentrations 5.0–15.0 g/kg affects the hydraulic characteristics of soils from the U-25 zone, and the filtration rate decreases by 4–5 times. For the mountainous brown desert soil from the U-30 zone, the concentration of kerosene up to 15.0 g/kg does not affect the mechanical composition of the soil, as well as the availability of the main nutrients (potassium, phosphorus, nitrogen). According to the mechanical composition, both soils belong to medium loamy soils. It has been established that when soil is contaminated from the U-25 zone in concentrations 15.0–150.0 g/kg, the fraction from 1.0 to 0.05 mm increases by 4–5%, and the silty and clay fractions in the soil decrease.
Alma Ormanbekovna Bimaganbetova, K. Uteulin, Anuar Bulatovich Atygaev, O. Fedorina, Yelena Yurievna Stepanova and Yerlan Bekeshev
SynthesisHub Advance Scientific Research
The article presents the results of ecological modeling of soil and plant pollution processes by toxic heptyl rocket fuel (unsymmetrical dimethylhydrazine, UDMH) and the product of its transformation by N-nitrosodymethylamine (NDMA). Experiments delivered in laboratory conditions show that in sabulous gray-brown soil (uncontaminated soil samples were taken from the Baikonur Cosmodrome zone), the reaction of transformation of UDMH in NDMA is reversible and depends on the concentrations of reacting compounds. NDMA is transferred from the soil to the stems and leaves of plants of wild-growing species by the aerogenous route. The ability to accumulate NDMA by leaves and stems of plants is more or less dependent on the plant species.
Objective - research on the transformation of unsymmetrical dimethylhydrazine (UDMH) and N - nitrozodymethylamine (NDMA) in a closed reservoir - an ecological model of rocket fuel pollution.
Research methods. The method of ecological modeling studies of UDMH and NDMA contamination in soil and plants has been developed and tested. Boxes with samples of sabulous gray-brown soil and seeds of wild plants brought from the drop zones of detachable parts of launch vehicles have been placed in hermetically sealed and transparent containers. NDMG or NDMA are introduced into the soil.
To measure the content of UDMH and NDMA in soil samples, in condensate on container walls, in the above-ground part and roots of plants, as well as in water washes from leaves, the method of quantitative chemical analysis high performance liquid chromatography has been used.