Электронный каталог

28.4
W30

    Waste-free technology of chlorella sorokiniana microalgae biomass usage for lipids and sorbents production [Текст] / N. A. Politaeva [et al.] // Известия высших учебных заведений. - Иваново, 2018. - №12. - Р. 137-143. - (Серия химия и химическая технология)
ББК 28.4

Рубрики: Микробиология

Кл.слова (ненормированные):
микроводоросли Сhlorella sorokiniana -- липиды -- жирно- кислотный состав -- Омега-3 -- сорбенты -- очистка сточных вод -- биомасса -- биологически активные добавки -- химическая модификация отходов -- α-линоленовая кислота
Аннотация: Обозначены области применения биомассы мироводорослей Сhlorella sorokiniana в народном хозяйстве (кормовые и биологически активные добавки и др.). Указано, что термическая и химическая модификация отходов растительного сырья может обеспечивать получение высокоэффективных материалов для водоочистки. Схематически представлены основные этапы безотходной технологии переработки указанных микроводорослей с выделением из них ценных липидов и получением сорбционных материалов. Определен жирнокислотный состав липидной фракции (77 мг/г), полученной методом Сокслета из лиофилизированной биомассы микроводорослей. Выявлено, что она включает 83,7% непредельных (в основном С18:1, С18:2, С18:3) жирных кислот, а предельные жирные кислоты преимущественно представлены рядом С16 – С20. В качестве наиболее ценных биологически активных соединений в составе лиофилизированной биомассы, необходимых для полноценной жизнедеятельности человека, обнаружена α-линоленовая кислота (Омега-3, 28,3%).
Держатели документа:
ЗКГУ
Доп.точки доступа:
Politaeva, N.A.
Atamanyuk, I.V.
Smyatskaya , Y.A.
Kuznetsova , T.A.
Toumi , Amira
Razgovorov , P.B.

24
M96
Murzakassymova, N. C.
    Modified sorbents and their application for extraction of metal ions. [Текст] / N. C. Murzakassymova, N. A. Bektenov, M. A. Gavrilenko // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 75-79
ББК 24

Рубрики: chemistry

Кл.слова (ненормированные):
coal -- sorbents -- modification -- sorption isotherm -- sorbent capacity -- oleum
Аннотация: The data on accumulated mining waste in the territory of Kazakhstan are presented. Their processing has become very important in our time. The structure of surface-modified carbon materials with a grafted layer is given. New modified carbon sorbents were obtained, oleum was used as a modifying agent. It was revealed that the capacitive characteristics of the modified sorbent are significantly higher than that of the original one, which will make it possible to more efficiently extract the metal ion from wastewater and technogenic formations. Sorption is an effective method of extracting valuable components from wastewater and man-made formations. This method allows you to recover valuable substances with a high degree of wastewater treatment, which can be purified to the maximum permissible concentration of pollutants and then used in technological processes or in recycling water supply systems. Processing involves ores characterized by a low content of valuable components, fine dissemination and similar technological properties of minerals. The existing technologies for the development of minerals make it possible to use only a small part of the valuable mineral mass extracted from the subsoil, and the rest forms waste, which, as it accumulates and is stored, becomes one of the most significant factors of anthropogenic changes in the environment.
Держатели документа:
WKU
Доп.точки доступа:
Bektenov, N. A.
Gavrilenko, M. A.

24
K21
Karmanovskaya, N. V.
    Public environmental monitoring of the state of snowpack in norilsk. [Текст] / N. V. Karmanovskaya, O. V. Nosova, A. V. Kaverzin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 95-103
ББК 24

Рубрики: chemistry

Кл.слова (ненормированные):
precipitation -- industrial area -- melt water -- chemical characteristics
Аннотация: It is considered that Norilsk ranks second in terms of atmospheric contamination. Industrial enterprises annually emit large amounts of sulphur dioxide, phenols, and heavy metal particles. The city is located within the Far North and is distinguished by the harsh climate of the subarctic type. The snow cover can lie from 244 to 277 days. Snow is a good sorbent; therefore, the snow cover accumulates solid and gaseous pollutants that enter it from the atmosphere with precipitation or are absorbed from it. The purpose of this study was to analyse the snow cover in the Norilsk industrial region and assess the state of atmospheric air in the winter. To achieve this goal, it is necessary to solve the following tasks: conduct a literature review on a given topic; take samples of snow in various industrial districts of Norilsk; study the dependence of the qualitative characteristics of snow on the sampling site; draw conclusions on the quality of snowpack in different areas of the industrial districts of Norilsk. In the course of the study, the following methods were used: organoleptic, visual, methods for determining water transparency, titrimetric analysis, etc. Heavy metal ions and sulphate ions were not detected in the thawed snow, so no industrial gas pollution was noted in the residential area. Most of the particulate contamination was caused by slagging of roads to improve vehicle traction.
Держатели документа:
WKU
Доп.точки доступа:
Nosova, O. V.
Kaverzin, A. V.

24
I-54
Ilyassov, A. E.
    Investigation of the sorption characteristics of activated carbons. [Текст] / A. E. Ilyassov, A.О. Baikonurova, B. N. Surimbayev // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 105-109
ББК 24

Рубрики: chemistry

Кл.слова (ненормированные):
activated carbon -- sorption -- sorption capacity of coal -- sorbent -- gold
Аннотация: The article presents the results of a comparison of the sorption characteristics for gold of crushed activated carbon of the foreign Haycarb brand, obtained from expensive raw materials - coconut shells, and crushed activated carbon of the domestic Shubarkol brand, obtained from relatively cheap raw materials - low-ash coking coal. The activated carbon Shubarkol crushed to a class of -3.6+1.0 mm, was produced in Kazakhstan from coking coal by Shubarkolkomir JSC.
Держатели документа:
WKU
Доп.точки доступа:
Baikonurova, A.О.
Surimbayev, B.N.

24
I-32
Ibrayev, M. K.
    Obtaining of water -soluble chelate forms of calcium and magnesium humate. [Текст] / M. K. Ibrayev // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 27-31
ББК 24

Рубрики: chemistry

Кл.слова (ненормированные):
calcium and magnesium humates -- chelate comple -- fertilizer -- crop production
Аннотация: this article analyzes the method of obtaining water-soluble chelated forms of calcium and magnesium humates for use as additives in the cultivation of agricultural crops. Humic substances, in turn, are an environmentally friendly, as well as an affordable type of sorbents. In the near future, humic substances are increasingly used in various sectors of agriculture. They are in the form of soluble humates, with progress being used as stabilizers of clay mixtures, which are used in oil drilling, as well as for the production of dyes for wood species. And very promising is the introduction of humic acids in the form of soluble humates in the rural economy as growth stimulants.
Держатели документа:
WKU
Доп.точки доступа:
Issabayeva, M.B.
Tusupova, A.S.
Amanzholova, А.S.
Kuandykova , A.A.