Waste are purifying waste.

Cost-effective and eco-friendly methods of novel sorbentproductionbased on a Ti, Ca and Mg phosphates have been carried out. The solid precursors were ammonium titanyl sulfate and calcined dolomite, which were used as titanium, calcium, and magnesium sources. The heterogeneous synthesis procedure in-cludes stepwise interaction between solid precursors and liquid phosphorus-containing agents. In mech-anochemical way to obtain the sorbent was usedonly solid reactants. Synthesiswas carriedout in a plan-etary ball mill. The final product wasa composite material, whichconsistsof the following components: TiO(OH)H2PO4·H2O, Ti(HPO4)2·H2O, CaHPO4·2H2O, MgНPO4·3H2O, and NH4MgPO4·6H2O. The new sorbent shows high sorption ability towards radionuclides in multicomponent liquid radioactive waste (LRW) sys-tems. Purification effect is based on both precipitation and ion exchange mechanism.

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Synthesis of Silver-Impregnated Magnetite Mesoporous Silica Composites for Removing Iodide in Aqueous Solution

Toxics ◽

10.3390/toxics9080175 ◽

2021 ◽

Vol 9 (8) ◽

pp. 175

Author(s):

Sang-Eun Jo ◽

Jung-Weon Choi ◽

Sang-June Choi

Keyword(s):

Aqueous Solution ◽

Langmuir Isotherm ◽

High Surface ◽

High Surface Area ◽

High Capacity ◽

Maximum Adsorption Capacity ◽

Initial Contact ◽

Order Kinetic ◽

Sorption Ability ◽

High Sorption

Mag@silica-Ag composite has a high sorption ability for I− in aqueous solution due to its high surface area and strong affinity for the studied anion. The material adsorbed I− rapidly during the initial contact time (in 45 min, η = 80%) and reached adsorption equilibrium after 2 h. Moreover, mag@silica-Ag proved to selectively remove I− from a mixture of Cl−, NO3− and I−. The adsorption behavior fitted the Langmuir isotherm perfectly and the pseudo-second-order kinetic model. Based on the Langmuir isotherm, the maximum adsorption capacity of mag@silica-Ag was 0.82 mmol/g, which is significantly higher than previously developed adsorbents. This study introduces a practical application of a high-capacity adsorbent in removing radioactive I− from wastewaters.

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Characterizing Bacterial Cellulose Produced byKomagataeibacter sucrofermentans H-110 on Molasses Medium and Obtaining a Biocomposite Based on It for the Adsorption of Fluoride

Polymers ◽

10.3390/polym13091422 ◽

2021 ◽

Vol 13 (9) ◽

pp. 1422

Author(s):

Viktor V. Revin ◽

Alexander V. Dolganov ◽

Elena V. Liyaskina ◽

Natalia B. Nazarova ◽

Anastasia V. Balandina ◽

...

Keyword(s):

Composite Material ◽

Adsorption Capacity ◽

Bacterial Cellulose ◽

Functional Materials ◽

Degree Of Crystallinity ◽

Maximum Adsorption Capacity ◽

Fluoride Ions ◽

Sorption Ability ◽

Wide Range ◽

Biocomposite Material

Currently, there is an increased demand for biodegradable materials in society due to growing environmental problems. Special attention is paid to bacterial cellulose, which, due to its unique properties, has great prospects for obtaining functional materials for a wide range of applications, including adsorbents. In this regard, the aim of this study was to obtain a biocomposite material with adsorption properties in relation to fluoride ions based on bacterial cellulose using a highly productive strain of Komagataeibacter sucrofermentans H-110 on molasses medium. Films of bacterial cellulose were obtained. Their structure and properties were investigated by FTIR spectroscopy, NMR, atomic force microscopy, scanning electron microscopy, and X-ray structural analysis. The results show that the fiber thickness of the bacterial cellulose formed by the K. sucrofermentans H-110 strain on molasses medium was 60–90 nm. The degree of crystallinity of bacterial cellulose formed on the medium was higher than on standard Hestrin and Schramm medium and amounted to 83.02%. A new biocomposite material was obtained based on bacterial cellulose chemically immobilized on its surface using atomic-layer deposition of nanosized aluminum oxide films. The composite material has high sorption ability to remove fluoride ions from an aqueous medium. The maximum adsorption capacity of the composite is 80.1 mg/g (F/composite). The obtained composite material has the highest adsorption capacity of fluoride from water in comparison with other sorbents. The results prove the potential of bacterial cellulose-based biocomposites as highly effective sorbents for fluoride.

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New Formulation of Tertiary Amines for Thermally Stable and Cost-Effective Chemical Additive: Synthesis Procedure and Displacement Tests for High-Temperature Tertiary Recovery in Steam Applications

10.2118/201769-ms ◽

2020 ◽

Author(s):

Randy Agra Pratama ◽

Tayfun Babadagli

Keyword(s):

High Temperature ◽

Cost Effective ◽

Thermally Stable ◽

Tertiary Amines ◽

Chemical Additive ◽

Synthesis Procedure ◽

Tertiary Recovery ◽

Additive Synthesis ◽

New Formulation

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Biocompatibility assessment of glas ionomer cement: Test of cytotoxicity

Stomatoloski glasnik Srbije ◽

10.2298/sgs0204075m ◽

2002 ◽

Vol 49 (3-4) ◽

pp. 75-80 ◽

Cited By ~ 2

Author(s):

Dejan Markovic

Keyword(s):

Composite Material ◽

Cytotoxic Effect ◽

Dental Materials ◽

Cost Effective ◽

Diploid Cell ◽

Test Results ◽

Human Diploid Cell ◽

Significant Difference ◽

Materials Used ◽

Ionomer Cement

Evaluation o f cytotoxicity is a first step in assessment of dental materials biocompatibility. Necessity for unique criteria in researches resulted in international standard methodology (ISO). The aim of this study was to assess the cytotoxicity of four restorative materials (three glas ionomer cements and one composite material) and to define adventages and disadventages of common ISO methodology for evaluation of this aspect of dental materials biocompatibility. Research was designed according to ISO/TC 106/1995 and ISO/ 10993-5/1994 methodology. Materials used in this investigation were Fuji IILC (GC), Vitiemer (3M), Ionosit fill (DMG-Hamburg), Luxat (DMG-Hamburg). Evaluation of cytotoxicity was carried out on standardized Human Diploid Cell Lung WI-38. Obtained results showed expressive cytotoxic effect of all investigated materials without statisticaly significant difference. Estimation of material biocompatibility and assessment of obtained results can be made only after establishment of correlation with test results. Common ISO methodology is simple for conductance and reproduction, and use of cell cultures in researches is painless, cost effective and without moral or ethical dilemma.

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Improvement of the Electrochemical Performance of LiFePO4 Cathode Composite Material Using a In Situ Pyrolysis Carbon Synthesis Procedure

Key Engineering Materials - High-Performance Ceramics IV ◽

10.4028/0-87849-410-3.466 ◽

2007 ◽

pp. 466-469

Author(s):

Shao Hua Luo ◽

Zi Long Tang ◽

Jun Biao Lu ◽

Jun Rong Li ◽

Zhong Tai Zhang

Keyword(s):

Composite Material ◽

Electrochemical Performance ◽

Synthesis Procedure

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Copper Ions Removal from Water using A2B3 Type Hyperbranched Poly(amidoamine) Hydrogel Particles

Molecules ◽

10.3390/molecules24213866 ◽

2019 ◽

Vol 24 (21) ◽

pp. 3866

Author(s):

Hojung Choi ◽

Youngsik Eom ◽

Sanghwa Lee ◽

Sang Youl Kim

Keyword(s):

Metal Ion ◽

Copper Ions ◽

Suspension Polymerization ◽

Spherical Shape ◽

Synthetic Process ◽

Metal Ion Removal ◽

Hyperbranched Poly ◽

Sorption Ability ◽

Heavy Metal Ion Removal ◽

High Sorption

Micrometer-sized hyperbranched poly(amidoamine) (hPAMAM) particles are prepared with a simple A2B3 type Aza–Michael addition reaction between aminoethylpiperazine (AEP) and methylenebisacrylamide (MBA) in an inverse suspension polymerization condition. The synthesized particles exhibited surprisingly high Cu2+ sorption capacity (0.223g/g) for a solid-type absorbent. In addition to the high sorption ability of the particle, its simple synthetic process and convenience, due to its micrometer-sized spherical shape and recyclability, make it a practical and attractive absorbent for heavy metal ion removal from aqueous solutions.

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A Polymeric Composite Material (rGO/PANI) for Acid Blue 129 Adsorption

Polymers ◽

10.3390/polym12051051 ◽

2020 ◽

Vol 12 (5) ◽

pp. 1051 ◽

Cited By ~ 1

Author(s):

Tomasz Kukulski ◽

Stanisław Wacławek ◽

Daniele Silvestri ◽

Kamil Krawczyk ◽

Vinod V. T. Padil ◽

...

Keyword(s):

Composite Material ◽

Polymeric Composite ◽

Cost Effective ◽

Polymeric Composite Material ◽

X Ray Diffraction ◽

Reduced Graphene ◽

Pseudo Second Order ◽

Industrial Compounds ◽

Acid Blue 129 ◽

Acid Blue

Over the years, polyaniline (PANI) has received enormous attention due to its unique properties. Herein, it was chosen to develop a new polymeric composite material: reduced graphene oxide/polyaniline (rGO/PANI). The composite was prepared by a simple and cost-effective fabrication method of formation by mixing and sonication in various conditions. The obtained materials were characterized and identified using various techniques such as scanning electron microscopy (SEM), Raman and ATR–FTIR spectroscopy, and X-ray diffraction (XRD). The objective of the paper was to confirm its applicability for the removal of contaminants from water. Water could be contaminated by various types of pollutants, e.g., inorganics, heavy metals, and many other industrial compounds, including dyes. We confirmed that the Acid Blue 129 dyes can be substantially removed through adsorption on prepared rGO/PANI. The adsorption kinetic data were modeled using the pseudo-first-order and pseudo-second-order models and the adsorption isotherm model was identified.

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