Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет

Постоянный URI для этого сообществаhttps://cris.qyzpu.kz/handle/123456789/1

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Автор: search.filters.author.Jakpar JandosovДата начала: 2024

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    Тип записи:Публикация,
    Preparation of Granular Organic Iodine and Selenium Complex Fertilizer Based on Biochar for Biofortification of Parsley
    (Hindawi Publishing Corporation, 2024-01-01)
    Yerlan Doszhanov
    ;
    Meiram K. Atamanov
    ;
    Jakpar Jandosov
    ;
    Karina Saurykova
    ;
    Zhandos Bassygarayev
    This study investigates the potential of biochar derived from various biomass sources: apricot kernel (AK), pine sawdust (PS), rice husk (RH), wheat straw (WS), and reed stem (RS) to enhance the yield, nutritional quality, and environmental sustainability of parsley crops. Comprehensive characterization through SEM, EDAX, nitrogen adsorption–desorption isotherms, and FTIR analyses identified AK biochar as the most suitable for further enrichment due to its superior specific surface area (512.3 m2/g) and iodine number (51.23 mg/g). EDAX analysis revealed that AK biochar exhibited the highest carbon content (92.1%), while RH biochar contained the highest silicon content (46%), indicating different potential applications. FTIR analysis identified key functional groups, such as carbonyl (1740 cm⁻1) and hydroxyl (3430 cm⁻1) groups, which contribute to the biochar’s reactivity and potential effectiveness in various applications. The effects of selenium (Na2SeO4), iodine (KI), their combination (Na2SeO4 + KI), and BISF (biochar‐enriched iodine and selenium fertilizer) on parsley growth, antioxidant properties, and nutrient accumulation were evaluated. The results demonstrated that joint applications of iodide and selenate led to a 3.1‐fold increase in iodine content (up to 16.8 mg/kg d.w.) and a 1.2‐fold increase in selenium accumulation (up to 2482.1 μg/kg d.w.) in parsley compared to separate treatments. Additionally, BISF treatment significantly improved key biometric parameters, with leaf weight increasing by 1.6 times (up to 326.5 g) compared to the control, and antioxidant content—ascorbic acid, polyphenols, and antioxidant activity—showing increases of 1.56, 1.27, and 1.50 times, respectively. This study underscores the effectiveness of selenium‐ and iodine‐enriched biochar in enhancing parsley crop yield and nutritional quality while also demonstrating the multifunctional role of biochar in environmental remediation.
    Цитирования (OpenAlex) 6Цитирования (OpenCitations) 3
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    Тип записи:Публикация,
    Zeolites and Activated Carbons in Hydroponics: A Systematic Review of Mechanisms, Performance Metrics, Techno-Economic Analysis and Life-Cycle Assessment
    (Multidisciplinary Digital Publishing Institute, 2025-12-08)
    Dana Akhmetzhanova
    ;
    Aitugan Sabitov
    ;
    Yerlan Doszhanov
    ;
    Meiram K. Atamanov
    ;
    Karina Saurykova
    The sustainable operation of hydroponic systems depends on maintaining the chemical stability of circulating nutrient solutions and preventing the accumulation of toxic compounds. The accumulation of phytotoxic ammonium, heavy metals, and organic metabolites in recirculating nutrient solutions remains one of the key challenges limiting the efficiency, sustainability, and scalability of hydroponic cultivation. This review provides a comprehensive comparative analysis of zeolites, activated carbons (ACs), and their functionalized and composite forms as key sorbents for nutrient management, contaminant removal, and environmental safety in hydroponic cultivation. Natural zeolites, with their well-defined crystalline structure and high ion-exchange selectivity toward ammonium and heavy metal cations, enable effective NH4+/K+ balance regulation and phytotoxicity mitigation. ACs, characterized by high specific surface area and tunable surface chemistry, complement zeolites by offering extensive adsorption capacity for organic compounds, root exudates, and pesticide residues, thereby extending the operational lifespan of nutrient solutions and improving overall system performance. Further advancements include the integration of zeolites and ACs with two-dimensional (graphene, g-C3N4) and three-dimensional (MOF, COF) frameworks, yielding multifunctional materials that combine adsorption, ion exchange, photocatalysis, and nutrient regulation. Transition-metal modification, particularly with Fe, Mn, Cu, Ni, and Co, introduces redox-active centers that enhance sorption, catalysis, and phosphate stabilization. The comparative synthesis reveals that the combined application of zeolite- and carbon-based composites offers a synergistic strategy for developing adaptive and low-waste hydroponic systems. From a techno-economic and environmental standpoint, the judicious application of these materials paves the way for more resilient, efficient, and circular hydroponic systems, reducing fertilizer and water consumption, lowering contaminant discharge, and enhancing food security. This systematic review was conducted according to the PRISMA 2020 guidelines. Relevant studies were identified through Scopus, Web of Science, and Google Scholar databases using specific inclusion and exclusion criteria.
    Цитирования (OpenAlex) 5Цитирования (OpenCitations) 1
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    Адсорбция препарата «Вольтарен» на пористых углеродных материалах в статических и динамических условиях
    (2026-04-06)
    Jakpar Jandosov
    ;
    Alzhan Baimenov
    ;
    А.Н. Сабитов
    ;
    Е.О. Досжанов
    ;
    D. Chenchik
    The article investigates the adsorption of diclofenac (pure API and as part of the Voltaren preparation) on porous carbon materials obtained from rice husks by chemical activation methods (H3PO4, K2CO3, KOH), as well as on synthetic carbon from xerogel. A comparative assessment of the sorption capacity and the kinetics of the process was carried out under static and dynamic conditions. It was found that the KOH-activated sample (SBET = 2610 m2/g) has the highest microporosity and demonstrates the maximum adsorption capacity (up to 956 mg/g in static and up to 1016 mg/g in a column with a fixed layer). Kinetic data is well described by a pseudo second-order model (R2 > 0.99), and dynamic adsorption is described by the Thomas model (R2 = 0.998). This allows us to predict the efficiency of sorbents in flow systems. There was no significant effect of the auxiliary components of the dosage form on the sorption process. The established patterns indicate the predominant interaction of the diclofenac molecule with the microporous carbon matrix through π–π interactions and electrostatic effects. The results obtained confirm the prospects of alkaline-activated carbon materials based on biomass for the development of effective enterosorbents for intoxication with nonsteroidal anti-inflammatory drugs.
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    Биошикізат негізіндегі кеуекті көміртекті сорбциялық материалдар алу және физика-химиялық қасиеттерін зерттеу
    (2026-04-06)
    А.Р. Керимкулова
    ;
    Е.Ж. Ермолданов
    ;
    Н.М. Асанбек
    ;
    М.К. Атаманов
    ;
    А.Н. Жумагалиева
    For the first time, an approach to the production of highly efficient porous carbon sorption materials based on lignocellulose agricultural waste has been developed and a comprehensive assessment of their physico-chemical properties has been carried out. Rice husks (RH), walnut shells (WSh), wheat straw (WSt) and pine sawdust (PS) were used as raw materials. The resulting carbonysates were chemically activated with potassium hydroxide at different mass ratios of the activating agent and the carbon matrix. To increase the surface chemical activity of sorbents, potassium hydroxide was used. The morphology of the surface and the elemental composition of the synthesized materials were studied using scanning electron microscopy and energy dispersion analysis, and the functional groups were studied using Fourier transform infrared spectroscopy (FTIR). It has been established that an increase in the degree of activation leads to the development of a hierarchical porous structure with the formation of micro-, meso- and macropores, as well as to an increase in the content of oxygen- and nitrogen-containing functional groups on the surface of carbon materials. The greatest microporosity was achieved with a KOH:carbon mass ratio of 1:4. The formed functional structure helps to increase the sorption capacity of materials in relation to toxic pollutants of various nature. The results obtained confirm the prospects of using synthesized carbon sorbents as environmentally safe and economically feasible materials for cleaning air and water environments.
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    Functional Nanostructured Carbon Honeycomb Monoliths for Hemoadsorption: Preliminary Studies on Biocompatibility, Protein-Bound Uremic Toxins and Inflammatory Cytokines Elimination
    (Multidisciplinary Digital Publishing Institute, 2026-09-07)
    Jakpar Jandosov
    ;
    Carol Angela Howell
    ;
    Susan R. Sandeman
    ;
    D. Chenchik
    ;
    Sergey V. Mikhalovsky
    Rice husk (RH) is a renewable siliceous lignocellulosic waste providing a unique, greener and less toxic alternative to conventional synthetic polymeric precursors in the production of carbon-based materials for biomedical applications. In this work we studied the porous structure of RH-lignin-based activated carbon produced in the form of honeycomb carbon monoliths and assessed their potential as hemoadsorbents for blood purification in the treatment of patients with serious medical conditions, such as kidney failure and sepsis. To determine their clinical suitability for such an application, the hemocompatibility and cytotoxicity of the monoliths were investigated using the standard ISO guidelines. The monoliths did not cause any changes in the cell viability or cell lysis. High micro/mesoporosity and surface chemistry of the initial monolith-C, N- and P-doped nanostructured carbon honeycomb monoliths were established by low-temperature nitrogen adsorption (LTNA) studies, mercury porosimetry data (MIP), SEM/EDS analysis and FT-IR spectroscopy. The micro-mesoporous, activated carbon-based filtration/adsorbent prototype devices, in the form of three-dimensional (3D) carbon matrix, functionalized with ion-exchange amino- and phosphate groups and encased in polyolefin heat shrink cable sleeve, have been developed with the capacity to remove protein-bound uremic toxins (PBUTs), such us PCS and IS, as well as inflammatory cytokines (IL-6 and IL-8) from human plasma in a flowing model system. The ammoxidized monolith-N, derived from the monolith-C, had the highest removal efficiency (40.05% for PCS, and 28.4% for IL-6). By contrast, phosphorylated monolith-P demonstrated the highest removal efficiency (54.62% for IS, and 54.4% for IL-8), whilst the monolith-C has the lowest removal efficiency for these adsorbates. These results do not correlate with the LTNA and MIP study results, suggesting that the interaction of surface chemical functional groups with the solutes play key roles in the adsorption mechanism. The ion-exchange mechanism of PBUTs and inflammatory cytokine chemisorption by the monoliths, modified with surface N- and P-containing functional groups, has been proposed.