Treatment of Natural Zeolites for Increasing the Sorption Capacity

Bruyako, M. G.; Grigorieva, Larisa; Grigorieva, Aleksandra; Ivanova, I. I.

doi:10.4028/www.scientific.net/msf.871.70

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…The non-equilibrium low temperature plasma (NELTP) processing in barrier discharge can positively affect the sorption characteristics of mineral carriers applied as building materials [ 66 , 67 ]. In general, plasma is an ionized gas that can be generated by a number of methods, including electric discharges (glow, microwave, plasma jet, radio frequency, etc.).…”

Section: Discussionmentioning

confidence: 99%

Optimization of the Use of His6-OPH-Based Enzymatic Biocatalysts for the Destruction of Chlorpyrifos in Soil

Senko

Maslova

Ефременко

2017

IJERPH

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Applying enzymatic biocatalysts based on hexahistidine-containing organophosphorus hydrolase (His6-OPH) is suggested for the decomposition of chlorpyrifos, which is actively used in agriculture in many countries. The application conditions were optimized and the following techniques was suggested to ensure the highest efficiency of the enzyme: first, the soil is alkalinized with hydrated calcitic lime Ca(OH)2, then the enzyme is introduced into the soil at a concentration of 1000 U/kg soil. Non-equilibrium low temperature plasma (NELTP)-modified zeolite is used for immobilization of the relatively inexpensive polyelectrolyte complexes containing the enzyme His6-OPH and a polyanionic polymer: poly-l-glutamic acid (PLE50) or poly-l-aspartic acid (PLD50). The soil’s humidity is then increased up to 60–80%, the top layer (10–30 cm) of soil is thoroughly stirred, and then exposed for 48–72 h. The suggested approach ensures 100% destruction of the pesticide within 72 h in soils containing as much as 100 mg/kg of chlorpyrifos. It was concluded that using this type of His6-OPH-based enzyme chemical can be the best approach for soils with relatively low humus concentrations, such as sandy and loam-sandy chestnut soils, as well as types of soil with increased alkalinity (pH 8.0–8.4). Such soils are often encountered in desert, desert-steppe, foothills, and subtropical regions where chlorpyrifos is actively used.

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Section: Discussionmentioning

confidence: 99%

Optimization of the Use of His6-OPH-Based Enzymatic Biocatalysts for the Destruction of Chlorpyrifos in Soil

Senko

Maslova

Ефременко

2017

IJERPH

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“…This approach facilitates the formation of ettringite-like iron-containing calcium hydrates within the concrete matrix upon cracking, resulting in an expansion of the solid and condensed phases. The authors in [119] suggest employing ion-plasma treatment to regulate the sorption capacity of natural zeolites intended for use as carriers of active biomodifiers, such as Bacillus pasteurii bacteria, which facilitate self-healing in concrete. The research demonstrates the superior effectiveness of the proposed sorbent modification method over the conventional heat treatment approach.…”

Section: Self-healing In Concrete and Cementmentioning

confidence: 99%

“…The authors in [119] suggest employing ion-plasma treatment to regulate the sorption capacity of natural zeolites intended for use as carriers of active biomodifiers, such as Bacillus pasteurii bacteria, which facilitate self-healing in concrete. The research demonstrates the superior effectiveness of the proposed sorbent modification method over the conventional heat treatment approach.…”

Section: Self-healing In Concrete and Cementmentioning

confidence: 99%

Advances in Materials with Self-Healing Properties: A Brief Review

Dallaev

2024

Materials

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The development of materials with self-healing capabilities has garnered considerable attention due to their potential to enhance the durability and longevity of various engineering and structural applications. In this review, we provide an overview of recent advances in materials with self-healing properties, encompassing polymers, ceramics, metals, and composites. We outline future research directions and potential applications of self-healing materials (SHMs) in diverse fields. This review aims to provide insights into the current state-of-the-art in SHM research and guide future efforts towards the development of innovative and sustainable materials with enhanced self-repair capabilities. Each material type showcases unique self-repair mechanisms tailored to address specific challenges. Furthermore, this review investigates crack healing processes, shedding light on the latest developments in this critical aspect of self-healing materials. Through an extensive exploration of these topics, this review aims to provide a comprehensive understanding of the current landscape and future directions in self-healing materials research.

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“…В качестве такого инструмента для активации поверхности материалов на наноуровне может служить воздей-ствие низкотемпературной неравновесной плазмы (НТНП). Обработка в НТНП является эффективным инструментов для активации материалов [13,14].…”

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“…As an instrument for activating the materials surfaces at the nanoscale level, the influence of lowtemperature nonequilibrium plasma (LTNP) can serve. Processing in LTNP is an effective tool for the materials activation [13,14].…”

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confidence: 99%

Plasmomodificated Sorbing Agents on the Basis of Zeolite Containing Earth Materials of the Khotynets Deposit Occurrence

Bruyako¹,

Grigor’eva²,

Grigoreva³

et al. 2017

Stroitel’stvo: nauka i obrazovanie

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А ННОТА Ц И Я. Сорбенты на основе натуральных цеолитов являются дешевым и доступным сырьем. Для увеличе-ния их сорбционной способности производится модификация. Модифицированные цеолиты могут использоваться в качестве функциональных добавок для строительных материалов, которые улучшают качество воздуха в помещении. Цеолитсодержащие породы подвергаются модификации различными способами: термическими, химическими, термо-химическими, механическими. В настоящее время наиболее эффективным направлением является использование ионно-плазменных технологий, в том числе влияние низкотемпературной неравновесной плазмы (НТНП), которое позволяет направить свойства только поверхностного и приповерхностного слоев в наноуровне. Этот эффект уве-личивает сорбционную способность сорбентов на основе цеолитсодержащих пород. В статье представлены результаты исследований по определению влияния НТНП на сорбционные свойства моди-фицированных природных цеолитов. В качестве объекта исследования были выбраны цеолиты Хотынецкого место-рождения Орловской области. Обработка сырья проводилась в лабораторной установке. Источник переменного тока с напряжением до 8000 В и частотой до 40 кГц между электродами создает область НТНП. Метод азотной порозиметрии на устройстве NOVA 2200 был использован для определения влияния НТНП на изме-нение нанопористости природного цеолита. Метод оптической микроскопии был использован для анализа внешних изменений поверхности цеолитов. Метод комбинационного рассеяния (КР) показал наличие явных изменений по-ложения и интенсивности полос в спектрах КР модифицированных образцов. Результаты исследований подтверждают высокое модифицирующее действие НТНП. OOO "AMTEK", 14, Fruktovaya str., Moscow, 117556, Russian Federation A B S T R AC T. The sorbing agents on the basis of natural zeolites are cheap and affordable raw materials. In order to increase their sorption capacity, a modification is made. Modified zeolites can be used as functional additives for building materials that improve indoor air quality. Zeolite containing earth materials undergo the modification in various ways: thermal, chemical, thermochemical, mechanical. Currently, the most effective direction is the use of ion plasma technologies, including the influence of low-temperature nonequilibrium plasma, which allows to direct the properties of only the surface and near-surface layers at the nanoscale level. This effect increases the sorption capacity of sorbing agents on the basis of zeolite containing earth materials. The paper presents the results of studies on determination the effect of a low-temperature nonequilibrium plasma influence on the sorption properties of modified natural zeolites. The object of the study was the zeolites of the Khotynets deposit occurrence of the Oryol region. The processing of raw materials was carried out in a laboratory machine. An alternating current generator with a voltage of up to 8000 V and a frequency of up to 40 kHz between the electrodes creates a region of low-temperature nonequilibrium plasma. PLASMOMODIFICA...

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Treatment of Natural Zeolites for Increasing the Sorption Capacity

Cited by 6 publications

References 12 publications

Optimization of the Use of His6-OPH-Based Enzymatic Biocatalysts for the Destruction of Chlorpyrifos in Soil

Optimization of the Use of His6-OPH-Based Enzymatic Biocatalysts for the Destruction of Chlorpyrifos in Soil

Advances in Materials with Self-Healing Properties: A Brief Review

Plasmomodificated Sorbing Agents on the Basis of Zeolite Containing Earth Materials of the Khotynets Deposit Occurrence

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