Organic Sorbents Research Articles

Developing Green Sorbents Derived from Natural Materials for Microextraction and Determination of Emerging Contaminants

Developing Green Sorbents Derived from Natural Materials for Microextraction and Determination of Emerging Contaminants

Efficiency of the complex mycotoxin adsorbent "Galluasorb" in combined mycotoxicosis of pigs

The paper presents the results of studying the efficiency of the method for preventing T-2, afla-, DON- and zearalenone toxicosis in pigs using the complex mycotoxin adsorbent “Galluasorb”. It is shown that as a result of including “Galluasorb” in pig feed, naturally contaminated with four mycotoxins at once, at the rate of 2.5 kg per ton of feed, a protective effect was observed, which was expressed in an increase in weight gain, feed consumption, a decrease in its conversion, normalization of the clinical status and morpho-biochemical blood parameters. Thus, on the 30th day of the experiment, the absolute increase in live weight in piglets receiving the main diet with mycotoxins with the addition of “Galluasorb” was 13.7 kg, while in piglets of the toxic control group - 11.8 kg. The average daily live weight gain per animal in the same groups was 456.7 g and 393.3 g, respectively. In the toxic control group, feed consumption was reduced by 7.4% compared to the group of animals receiving the main diet with mycotoxins with the addition of “Galluasorb”. A decrease in the feed conversion ratio was also noted in the preventive group. Thus, the use of the complex adsorbent had a protective effect in the natural contamination of feed in the T-2 farm with toxin, aflatoxin, DON and zearalenone. The developed adsorbent also opens up prospects for the use of the natural mineral halloysite in combination with an antioxidant, hepatoprotector and organic sorbent in pig farming.

Studies of Niobium Sorption from Chloride Solutions with the Use of Anion-Exchange Resins

This paper presents the results of studies for niobium sorption from chloride solutions with the use of anion-exchange organic sorbents: Amberlite IRA-67, Purolite A-100, AB-17-8, and AN-2FN. Niobium sorption was performed from model niobium-containing solutions. Data on comparative sorption characteristics of the studied sorbents were obtained, and the static exchange capacity of the sorbents, values of distribution coefficients, and extraction degree during the niobium sorption from chloride solutions were calculated. The Purolite A-100 anion-exchange resin exhibited the highest affinity for niobium ions under the conditions studied. Its distribution coefficient was 184 mL/g; the niobium extraction degree was 41.5%. To study the equilibrium sorption of niobium from solution on the Purolite A-100 anionite, three well-known models of isotherms were applied: Langmuir, Freundlich, and Dubinin–Radushkevich. The data obtained confirm the good agreement of the Langmuir model with the results of experiments and indicate that the process takes place in a monomolecular layer on the adsorbent having homogeneous adsorption centers. The optimum conditions of niobium sorption by the Purolite A-100 anion-exchange resin were determined as follows: hydrochloric acid concentration—5–10 wt.%, process temperature—35–40 °C, and duration—40–50 min. The calculated activation energy values for niobium sorption from hydrochloric acid solution in the temperature range of 20–50 °C were 25.32 kJ/mol, which corresponds to the intermediate region corresponding to the transition from the diffusion to the kinetic mode.

Microfluidic formation of biodegradable PCLDA microparticles as sustainable sorbents for treatment of organic contaminants in wastewater

Polymeric microparticles (MPs) have attracted remarkable interest in environmental remediation owing to their economic benefits, simple manipulation and recyclability. However, most polymeric MPs have intrinsic issue for microplastic pollution, which can only be resolved for different materials using a biodegradable polymer. Here, we synthesize the photocurable polycaprolactone diacrylate (PCLDA) via an acrylation reaction for use as a sustainable sorbent in the treatment of organic contaminants. PCLDA can form chemically interconnected network, ensuring a solid state with the swelling phenomenon in their organic solvent. Using a flow-focusing droplet generator, we generate monodisperse oil-in-water (O/W) emulsions with the PCLDA solution as the oil dispersed phase and form MPs via in situ photopolymerization under UV light. Compared to the general solvent evaporation method, PCLDA MPs are found to have a fine morphology and narrow size distribution. We also evaluate the degree of swelling behavior of PCLDA MPs in various solvents based on their solubility parameter. Further we demonstrate that these PCLDA particles, as sustainable organic sorbents, exhibit high performance in the treatment of toluene oil droplets and solutes from water with good recyclability.

Study on the Surface Area of Electrospun Magnesium Oxide (MgO) Nanofibers

The optimized surface morphology of electrospun magnesium oxide (MgO) nanofibers can be achieved based on the parameters set during the fabrication of nanofibers. However, not all materials used during the electrospinning process can be synthesized together as it depends on the application’s needs. This research aims to study the factors that influence the surface area of the MgO nanofibers due to material preparations and electrospinning parameters. The research is based on data obtained from the previous research and was analyzed to evaluate the effect on MgO nanofibers that synthesized with different materials. Based on the data analysis using Brunauer-Emmert-Teller (BET), the surface area for carbon sorbent is higher than organic sorbent. The surface area for carbon sorbent of nitrogen could be achieved up to 324.5 m2/g compared to only 104.8 m2/g using organic sorbent for magnesium oxalate dihydrate (MO). The studies show that the use of nitrogen as a carbon sorbent in the fabrication of electrospun MgO nanofibers may produce a good quality of nanofibers.

Рharmaceutical-technological Study of Adsorbed Liquid Plant Extract of Antimicrobial Activity

Introduction. The use of a combined herbal extract of chamomile flowers, calendula flowers and yarrow herb (patent RU 1 561 262 C) can be effective against various microbial strains, including those causing inflammatory diseases of the oral cavity. The article presents the results of a comparative pharmaceutical and technological study of an adsorbed liquid plant extract on sorbents of various nature for subsequent introduction into the composition of orodispersible tablets. Aim. To select the optimal sorbent of liquid plant extract of chamomile flowers, calendula and yarrow herb ensuring the suitability of the active pharmaceutical ingredient for direct compression, by analyzing using the SeDeM expert system method. Materials and methods. Active pharmaceutical ingredient was adsorbed on organic (microcrystalline celluloses of various brands) and inorganic (colloidal silicon dioxide of various brands) sorbents, a liquid combined plant extract of anti-inflammatory and antibacterial action of chamomile flowers, calendula flowers and yarrow herb. Pharmaceutical-technological analysis included the study of such technological parameters as: Bulk Density ( Da = m / Va ), Tapped Density ( Dc = m / Vc ), Inter-particle Porosity (Ie = ( Dc – Da)/(Dc · Da )), Carr index (IC = (Dc – Da )/( Dc · 100)), Cohesion Index (Icd), Hausner Index ratio (IH = Dc / Da ), Angle of Repose ( Tg α = h / r ), Powder Flow ( t ), Loss of Drying (%LoD), Hygroscopicity ( %H), Particles <50 μm (%Pf), Homogeneity Index ( I Θ = Fm /100 + ∆ Fmn a ). Results and discussion. A comprehensive pharmaceutical-technological study of sorbents of liquid plant extract before and after adsorption was carried out, the results of which were processed and presented by the SeDeM expert system method. It was found that the adsorption of the extract has a positive effect on the Dimension ( ID = ( Da · Dc )/2) of all studied sorbents which may be related to change in the fractional composition due to the aggregation of small particles during adsorption and destruction of large ones when sifting the finished mixtures through a sieve with a mesh diameter of 200 μm (recommended insoluble particle size for use in the oral cavity). A negative effect on the Stability (IS = (%LoD · %H)/2 ) was also recorded for all samples, regardless of their nature, which is probably explained by residual moisture after drying and high hygroscopicity of adsorbed plant bioactive substances. Changes in the Compressibility (IC = (Ie · IC · Icd)/3), Flowability (IF = (IH · α · t )/3) and Dosage (IDos = (%Pf · I Θ )/2) are individual. Conclusion. The SeDeM expert system method makes it possible to characterize bulk materials from the point of view of suitability for direct compression, to establish the factors that need to be primarily corrected by the introduction of auxiliary substances. As a result of the conducted studies, Aeroperl 300 (inorganic sorbent) and Pharmacel 112 (organic sorbent) can be recommended for the introduction of liquid plant extract of chamomile flowers, calendula flowers and yarrow herb into the composition of orodispersible tablets.

MODIFICATION OF NATURAL OIL SORBENT FOR IMPROVEMENT OF HYDROPHOBICITY

A sorbent made of natural materials (moss) was selected for the sorption of diesel from the surface of the water. The sorbent was modified to increase its hydrophobic–oleophilic characteristics. Typical natural organic sorbent from moss was selected and modified in three different ways: processed with hot water (80 °C and 100 °C), mercerized and coated with oil–water (10% and 50%). Water, diesel sorption capacity, and oil retention tests were performed. Tests showed that simple treatment with hot water and alkali can change surface properties and improve sorption capacity. Modification with hot water at 80 °C enhanced sorbents’ oil sorption capacity and showed the best results but meanwhile, this method readily increased hydrophilicity. This method of sorbent treatment could not be applied in cases where sorbents are used to clean oil spills from water surfaces. Meanwhile, better sorption results would be obtained in cases where cleaning operations take place on soil and other solid surfaces.

Oil Palm's Empty Fruit Bunch as a Sorbent Material in Filter System for Oil-Spill Clean Up.

Oil pollution such as diesel poses a significant threat to the environment. Due to this, there is increasing interest in using natural materials mainly from agricultural waste as organic oil spill sorbents. Oil palm’s empty fruit bunch (EFB), a cost-effective material, non-toxic, renewable resource, and abundantly available in Malaysia, contains cellulosic materials that have been proven to show a good result in pollution treatment. This study evaluated the optimum screening part of EFB that efficiently absorbs oil and the physicochemical characterisation of untreated and treated EFB fibre using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The treatment conditions were optimised using one-factor-at-a-time (OFAT), which identified optimal treatment conditions of 170 °C, 20 min, 0.1 g/cm3, and 10% diesel, resulting in 23 mL of oil absorbed. The predicted model was highly significant in statistical Response Surface Methodology (RSM) and confirmed that all the parameters (temperature, time, packing density, and diesel concentration) significantly influenced the oil absorbed. The predicted values in RSM were 175 °C, 22.5 min, 0.095 g/cm3, and 10%, which resulted in 24 mL of oil absorbed. Using the experimental values generated by RSM, 175 °C, 22.5 min, 0.095 g/cm3, and 10%, the highest oil absorption achieved was 24.33 mL. This study provides further evidence, as the data suggested that RSM provided a better approach to obtain a high efficiency of oil absorbed.

Correlation of the organic sorbents texture with chromatographic characteristics of monolithic HPLC columns based on 1-vinyl-2-pyrrolidone

Monolithic sorbents based on styrene/divinylbenzene/1-vinyl-2-pyrrolidone copolymer have been synthesized inside the glass tubes with the inner diameter of 2 mm. The effect of the porogenic solvent nature and divinylbenzene content on the textural and chromatographic properties of sorbents was studied. Polypropylene glycol with the molecular weight 2025 g/mol and triblock copolymer Pluronic 10R5 (poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol)) with the molecular weight 2000 g/mol were found to be the most suitable porogenic solvents. The fraction of divinylbenzene in the initial polymerization mixture was shown to affect the textural characteristics of sorbents (specific surface area, pore size and volume). The dependence of hydrodynamic permeability and columns loading capacity on divinylbenzene content in the initial reaction mixture was elucidated. Separation examples for the prepared columns are given.

Sorption of 137Cs and 90Sr on Organic Sorbents

The present study examines the sorption of Cs (I) and Sr (II) on organic sorbents in the pH range from 2 to 10, as well as the mechanisms of their binding. In order to determine the influence of the physical properties and the quantity of functional groups of the organic sorbents on sorption, experiments were carried out on organic materials of varying degrees of metamorphism: high-moor peat, hard and brown coals and shungite. A detailed description of their mineral composition, cation exchange capacity, buffering capacity and elemental composition of sorbents is provided. XRD, XRF, SEM and BET adsorption methods were used for assaying. As a result of the conducted research, it can be concluded that Sr (II) showed a higher sorption per unit specific surface area than Cs (I) in the studied range of concentrations and pH values. Sr (II) sorption decreases in the following order: high-moor peat > brown coal > shungite > hard coal. The sorption of Cs (I) is highest on brown coal and lesser for high-moor peat, shungite and hard coal. It is suggested that Cs (I) and Sr (II) can be fixed on carboxyl functional groups and Cs (I), possibly, in insignificant amounts on phenolic hydroxyls of all four studied organic sorbents.

CURRENT DEVELOPMENT OF SORBENTS DERIVED FROM PLANT AND ANIMAL WASTE AS GREEN SOLUTION FOR TREATING POLLUTED AQUEOUS MEDIA

In this review article, the recent development of organic sorbents derived from plant and animal waste for treating polluted aqueous media is presented. The application of biomass has been recognized reliable to adsorb hazardous pollutants contained in wastewater generated by emerging industries. This paper also discusses other existing technologies for removing pollutants including heavy metals, dyes, oil and grease, antibiotic and phenolic compounds from polluted aqueous media. Furthermore, several prominent examples of plant and animal wastes such as eucalyptus bark, pine bark, rice husk, various fruit peels, and animal bones are also properly reviewed. The effects of modification techniques on sorbent performance such as carbonization, pyrolysis, and chemical impregnation using acid or alkaline chemicals are considerably included. Some gaps in current literature are also discussed including the tendency of certain targeted pollutants, the use of simulated aqueous media, the scale of research projects, and the prominent modification procedures. Eventually, based on the relevant literature, clear conclusion has been drawn that these natural disposals have great potentiality as environmentally friendly sorbent alternative to other commercial expensive sorbents, and their reuse has been part of green solutions supporting a circular economy system.

Assessing the performance of wax-based microsorbents for oil remediation

Millions of tons of crude oil are drilled from onshore and offshore locations to satisfy the yearly global fuel demand, increasing the risk for spills and major ecological disasters. Remediation strategies involving chemical surfactants and oil burning are employed, but the toxicity and undesired environmental effects of these treatments raise more concerns and prompt the investigation for alternative approaches. Amongst these novel methods are organic sorbents. In addition to being cost-effective, these materials absorb oil molecules and facilitate oil recovery in an eco-friendly manner. Here, we explore the ability of organic microparticles to improve oil spill clean-up with a focus on interfacial properties and sorption capacities. We investigate the potential of soy, soy-bee and carnauba waxes as secondary oil remediation technology. The waxes are used to design hollow-core microcapsules, which confer them a superoleophilicity ideal for oil recovery. The wax-based microcapsules can remediate oils, including crude oil, mineral oil, and hexadecane, with a sorption capacity up to 5 times their dry mass. Due to low density and high hydrophobicity, the oil-laden microparticles float on top of the water, easing the collection process. Thus, this study lays the foundation for the development of the new class of wax-based microsorbents, exhibiting attractive physical properties in addition of being made of FDA approved plant and animal derivatives. Future studies involving microparticle-assisted bioremediation will provide new insights on how the design of the microparticles could be tailored to fit various ecosystems.

Ecological aspects of sorbents use to improve the efficiency of bioremediation on oil-contaminated lands

Nowadays, polluted soils are one of the primary environmental problems. Due to a large number of oil-contaminated lands, new methods are being developed more and more actively, as well as a combination of various existing methods for disposing of oil spills. In this paper, bioremediation with the use of adsorption is considered to reduce toxicity and accelerate the processes of microbial destruction of hydrocarbons. There is a large selection of sorbents based on carbon, mineral, and natural materials. The effectiveness of a particular sorbent will vary depending on the application region, weather and climate conditions, soil type, and the type and properties of the oil. In this work, peat was tested as an organic sorbent (S1), vermiculite as a mineral sorbent (S2), and sorbent based on carbon (S3). The sorbents were added to the soils contaminated by oil, evaluating the pH, humidity, and phytotoxicity of the soils. The results showed that the soils treated with sorbents maintained the neutral pH, increased the humidity, and decreased the phytotoxicity of the soil. The sorbent efficiency was S3> S2> S1.

An improved method for the isolation of amarogentin, the bitter principle of yellow gentian roots

Amarogentin is well known to be among the most bitter naturally occurring compound. Either as an individual one or extracts, amarogentin is used as a food additive and as a dietary supplement. The aim of the present investigation is to set-up a convenient process to selectively isolate amarogentin from the ethanolic roots extract of Gentiana lutea. The process consisted in the treatment of an aqueous suspension of such an extract with a panel of 21 solid inorganic / organic sorbents followed by filtration, desorption, and high performance liquid chromatography (HPLC) analyses. Among the solid materials tested, those containing Mg+2 in the frame of a lamellar structure provided very good adsorption yields in the range 86.4% − 99.9% (p < 0.05 at Student’s t-test). The method we set up could be in principle useful to obtain a pure nature-derived food additive to provide bitter taste to foods and beverages.

The influence of solid-phase organic carbon on the sorption of hydrophobic organic pollutants in landfill barriers, UK

The Oxford Clay from Bletchley, the Kimmeridge Clay from Kimmeridge Bay, Dorset, and Tertiary mud (Wittering Formation) from Whitecliff, Isle of Wight, United Kingdom were used as sorbent samples because of their distinctive organic material characteristics (Amorphous organic matter rich and/or phytoclast rich). Organic material was isolated for identification and analysis using a non-acid extraction method (heavy liquid) extraction and traditional methods involving HF digestion. These organic materials were then used to determine influences of extraction on hydrophobic organic contaminants, (toluene and naphthalene) sorption. Organic petrology classification was applied to identify the various types of isolated organic material. Amorphous organic matter from the Kimmeridge Clay displayed a higher sorption capacity (Sorption–desorption distribution coefficient (Kd), Kd = 6,481, 59, 670; for toluene and naphthalene, respectively) compared to literature values. Amorphous organic matter-rich sorbent extracts demonstrated a higher absorption capacity than the phytoclast-rich sorbents (e.g., Wittering Formation, Kd = 219, 10, 134; for toluene and naphthalene, respectively). Implications of results in landfill design/risk assessment and modelling are discussed.

Effects of accumulated straw residues on sorption of pesticides and antibiotics in soils with maize straw return

Outspread straw return practice leads to accumulation of structurally diverse organic materials in soils, including raw straw and straw residues. This practice provides a supplementary source of organic sorbents for compounds released into soils. However, effects of accumulated straw materials on sorption of compounds in soils remain poorly understood. Here we report that straw materials accumulated in soils display changing chemical structure and properties during decomposition, the majority of which distribute in exponential growth or decay manners with decomposition extents of materials. Sorption of straw materials toward 40 commonly used pesticides and antibiotics takes a compromise of decreasing crystalline index and increasing water absorption capacity of the sorbent materials during decomposition. This tradeoff in sorption leads to case-specific sorption trends of organic compounds in soils with straw return practice, following a composite linear sorption model of mixed soils and straw materials. The predictive model shows that relatively hydrophobic, hydrogen bond acceptor-rich chemicals (about 22.5% of the 40 compounds) display decreasing sorption capacity in organic matter-rich and/or relatively acidic soils with straw return. This finding may contradict the notion that crop straw return usually increases sorption and decreases leaching of compounds in soils.

Organic Sorbents for Air Purification: A New Application for Recyclable Hyper-Cross-Linked Polystyrene

Sorption-based air purification is typically performed using inorganic sorbents such as activated carbon. Organic polymeric sorbents with a microporous or nanoporous structure could be a promising alternative. We investigated the effectiveness of four hyper-cross-linked polystyrenic sorbents against formaldehyde and compared it to the effectiveness of three activated-carbon-based preparations. One of the polystyrenic sorbents (MN270) was nanostructured, and it reduced formaldehyde concentration by over 95% (from 0.463 ± 0.037 mg/m³ to 0.020 ± 0.002 mg/m³) in short-duration tests. In the long-duration tests (500 min), MN270’s performance was comparable to that of the pure coconut shell activated carbon. MN270 was found to be nanostructured (10–200 nm pores), which was associated with its superior sorptive properties and the comparatively high Brunauer–Emmett–Teller (BET) result of 1370.49 ± 19.19 m²/g, which was higher than the best-performing activated carbon sorbent (941.76 ± 18.10 m²/g). The novel application of the hyper-cross-linked polystyrenic sorbents for air purification provides a feasible and potentially more sustainable alternative to inorganic sorbents, thanks to their recyclability and manufacturability from biomass.

Obtaining Organic Poultry Breeding Products in Prevention of Mycotoxicosis

The article is devoted to the prevention of mycotoxicosis in poultry farming as one of the main components of effective management of the industry. Despite the step-by-step control, the synergy of mycotoxins has a detrimental effect on the bird's body, especially at the final stage of fattening. Growth inhibition, as well as sudden death syndrome, reduce the economic impact. We tested and proposed for introduction into production the organic sorbent "Toxfin dry", which contributed to improving the sanitary quality of feed and reduced the level of mycotoxins-by 46.3-85.3%. We obtained a positive effect of the use of the mycotoxin adsorbent when introduced into the diets of broiler chickens. The experimental bird was fed mixed feed of various quality. The best productive qualities were possessed by broilers from the 3rd experimental group, where in addition to the mixed feed seeded with mycotoxins, for the prevention purpose, the mycotoxin adsorbent "Toxfin dry"was set. During the experimental work, the bird of the 3rd group was stress-resistant, calmly reacted to the work of the poultry house, timely approached the feeders and drinkers. The live weight at the slaughter age exceeded the results of the analogues by 2.1-6.8%. Feed costs for the production of a unit of production, in comparison with poultry from the 2nd group, decreased by 5.1%. The studies conducted with the help of the test object Tetrahymena Piriformis showed that the relative biological value of the experimental meat samples of the 3rd group was higher than the control indicators - by 1.2%. The introduction of the mycotoxin adsorbent "Toxfin dry" with mixed feed, for preventive purposes, contributed to an increase in the average live weight of broilers - by 4.2%, safety-by 2.8 percentage points and a decrease in feed consumption-by 13.9%. The European Broiler meat Production Efficiency Index increased by 59.6 points. The economic effect of using the mycotoxin adsorbent was 15.4 rubles per 1 ruble of costs. Taking into account the technologies used for raising poultry, as well as the livestock located in the poultry house, the economic effect can increase proportionally. The introduction of mycotoxin adsorbents into the diets of broiler chickens for preventive purposes is a necessary condition for the prevention of mycotoxicosis and, consequently, a guaranteed increase in the profitability of production.

ИССЛЕДОВАНИЕ ПРОДУКТОВ ТЕРМОЛИЗА ВОЛЬФРАМОФОСФАТОВ ЦЕЗИЯ

The article deals with the synthesis, study of thermal decomposition and identification of the thermolysis products of cesium tungstophosphates that are promising compounds in the field of materials science, catalysis and other fields of science and technology.&#x0D; Compounds with the Keggin anion structure are synthesized from aqueous solutions: Cs3[PW12O40] ∙ 9H2O; Cs5Na2[PW11O39(H2O)] ∙ 5H2O and Cs5[PW11O39Ni0,5Cu0,5(H2O)] ∙ 4H2O. The processes of their thermal decomposition are investigated and some regularities of their thermolysis are established. Thermolysis products are identified: Cs3PW12O40, phases with the structure of pyrochlore and hexagonal tungsten bronze of the composition Cs10/13Na4/13P2/13W22/13O6 and Cs10/13P2/13Ni1/13Cu1/13W22/13O6. The unit cell parameters of the phase with the pyrochlore structure are determined. Research results confirm that phosphorus, nickel and copper ions are included in the structure of pyrochlore and hexagonal tungsten bronze. Phases similar to this chemical composition are not previously known in the literature. The studied tungstophosphates and their thermolysis products are promising compounds for obtaining heterogeneous catalysts for the oxidation of organic compounds and selective sorbents. The research results can be useful for predicting the thermal properties and phase composition of thermolysis products of similar polyoxometallates in order to obtain new compounds with the structure of pyrochlore and hexagonal tungsten bronze, as well as composite materials based on them.

Синтез, сорбционные и металлохромные свойства кремнийорганических производных 1-ацетилгуанидина

Increased interest in carbofunctional organosilicon monomers (silanes) and polymers (silsesquioxanes) is associated with the fact that these compounds are promising reagents and building blocks, materials for micro-electronics, agriculture and medicine, complexones, catalysts, and efficient sorbents. Thus, functional polysilsesquioxanes surpass mineral and organic sorbents in sorption properties. Moreover, they have the highest chemical and thermal stability. Along with sorption activity carbofunctional organosilicon compounds of both monomeric and polymeric structures can possess metallochromic properties. All this paves the way for the large-scale development of analytical systems for the creation of new complex test methods for the determination, concentration and separation of metals from solutions. In the present study the functional monomer N-[3-(triethoxysilyl)propyl]acetylguanidine 1 was synthesized by the condensation reaction of 1-acetylguanidine and 3-triethoxysilyl-propylamine. Poly-N-[3-silsesquioxanyl) propyl]acetylguanidine 2 was obtained by hydrolytic polycondensation of compound 1. The composition and structure of compounds 1 and 2 were confirmed by IR and 1H NMR spectroscopy, as well as by elemental analysis. Polymer 2 was studied as a sorbent for ions of heavy metals, such as Hg (II), and noble metals Ag (I), Au (III), Rh (II), Pd (II), Pt (IV) from solutions of their salts in hydrochloric or nitric acid. For polymer 2, the values of static sorption capacities have been calculated. The latter depend on the nature of the metal and have values from 78 mg/g (for platinum) to 366 mg/g for rhodium. The graphs of the degree of metal extraction depending on the sorption time and acid concentration have been plotted. A sorption mechanism is proposed, which is realized due to the chelate interaction of the metal cation (M+) with the amide groups of compounds 1 and 2. The interaction of monomer 1, in the form of indicator paper, and polymer 2, in the powder form, with salts of the studied metals is accompanied by intense specific coloration (metallochromy). Color tables of the samples after their contact with the Ag (I), Au (III), Pd (II), Pt (IV), Rh (III), Hg (II) salts are given.