The possibility of producing and designing bio-epoxides based on the natural polyphenol lignin/epoxidized lignin tannic acids for application as wood adhesives is presented in this work. Lignin contain numerous reactive hydroxyl phenolic moieties capable being efficiently involved reaction with commercial epoxy resins a substitute commercial, non-environmentally friendly, toxic amine-based hardeners. Furthermore, was epoxidized order to obtain an that can be replacement diglycidyl ether...

The anthraquinone dye, C.I. Acid Blue 111, was subjected to electrochemical oxidation using an IrOx electrode and sodium sulphate or chloride as electrolytes.The effects of different operating parameters on the rate dye decolorization, such applied current, electrolyte concentration, initial pH were studied.The concentration during study followed via ultraviolet-visible spectroscopy.The changes in molecule analyzed by Fourier Transformation-infrared level mineralization after established...

Magnesium ferrite (MgFe2O4) particles were synthetized by sol-gel method and used in the decolorization of Acid Violet 109 (anthraquinone dye, AV109) water solutions' combination adsorption heterogeneous Fenton process. The material's morphology elemental analysis surface revealed Scanning electron microscopy Energy Dispersive Spectroscopy (SEM/EDS). X-Ray Diffraction (XRD) technique was to analyze crystallographic phase. In first part experiment, ability synthesized investigated. During...

Adsorption of anthraquinone dye Acid Blue 111 by alumina-iron oxide doped particles prepared sol-gel method from aqueous solutions was studied. The adsorbent morphology revealed FESEM and the crystallographic phase is analyzed XRD technique. effect adsorbate concentrations, pH value, type thermodynamic parameters on removal adsorption change concentration during adsorbtion followed using UV-Visible spectrophotometer. surface before after observed Fourier Transformation-infrared spectroscopy...

Adsorption of carbamate pesticide Methomyl by Co-Beta Zeolite particles prepared wet ion-exchange method from aqueous solutions was studied. The effect zeolite and concentrations, pH value, sintering temperature on removal an solution change methomyl concentration during the adsorption followed using UV-Visible spectrophotometer. Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS) revealed modified morphology elemental structure. adsorbent surface before after dye...

Sorption of the Zn2+ and Ni2+ ions by Na+-enriched natural clinoptilolite (Na-CLI) from aqueous solutions containing both at a range concentrations has been studied 298, 308, 318 K. It was found that sorption particular ion Na-CLI increases with increase in initial concentration solution ion. At given concentration, degree temperature. Also, is greater when contains second than it present alone. The kinetics accord pseudo-second-order reaction rate model. values k2 constant do not show...

The influence of samarium, as an additional alloying element, on the morphology and corrosion performance Zn-Co-Sm alloy electrodeposited coatings, was investigated by scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDS) electrochemical impedance (EIS) measurements. coatings were from aqueous solution containing Sm(NO3)3, ZnCl2, CoCl2 metal ion source. percentage Sm in coating may be very finely tuned setting electrodeposition parameters, including...

Polymer composites based on unsaturated polyester resin (UPR) and reinforced with particles unmodified/modified plant provenance biosilica were synthesized characterized. An was obtained from waste poly (ethylene terephthalate (PET). Biosilaca are made rice husk biomass. The surface of the produced silica modified using three different silanes: 3-trimethoxysilylpropyl methacrylate (MEMO), trimethoxyvinylsilane (TMEVS), 3-aminopropyltrimethoxysilane (APTMS). microhardness test method used to...

Magnesium ferrite (MgFe2O4) particles were synthetized by sol-gel method and used in the decolorization of Acid Violet 109 (anthraquinone dye, AV109) water solutions' combination adsorption heterogeneous Fenton process. The material's morphology elemental analysis surface revealed Scanning electron microscopy Energy Dispersive Spectroscopy (SEM/EDS). X-Ray Diffraction (XRD) technique was to analyze crystallographic phase. In first part experiment, ability synthesized investigated. During...

Methomyl is a widely used carbamate pesticide, which has been extensively over the past 60 years, primarily as an insecticide, but also herbicide and fungicide. pro-duction involves series of complex reactions. During its synthesis, wastewater from pesticide manufacturing plants can contaminate aqueous media. This study provides results investi-gation effectiveness methomyl removal solutions by adsorption using ther-mally regenerated microspheres activated carbon (RAC). The microstructure...

Conventional black powder typically consists of charcoal, sulfur and potassium nitrate (KNO3). The use other carbon-based substances instead charcoal has been less common. Following the development time delay pyrotechnic compositions in this research, properties substances, particularly carbon were studied. widely spread due to its unique chemical composition superior combustion properties. However, specific production process selection materials for producing it is difficult achieve same...

Specifically designed nanofibers enriched with chemically active nanoparticles, capable of destruction chemical warfare agents (CWA's) and other toxic chemicals are highly desirable for the incorporation in personal protective equipment decontamination items. In this work, we prepared six types nanofibrous materials, based on two polymers, polyvinylchloride (PVC) polyvinylbutyral (PVB). As carriers chemistry, nanoparticles cerium-dioxide (CeO2) zirconium(IV)hydroxide (Zr(OH)4) were used. The...

The potential consequences of a nuclear security event could be catastrophic; therefore, all appropriate measures should taken to prevent them. Detection, as one security's functions, involves recognizing criminal or unauthorized acts with implications, measurements indicating the presence other radioactive material at associated facilities, activities, strategic locations. Determining natural background radiation in advance for such locations can certainly enhance effectiveness detection...

This study aimed to assess the impact of surface geometry, preparation, and coating procedures on corrosion behavior HAA-polyester powder coated steel components in a salt spray test. The process parts involved degreasing, Zn coating, an epoxy primer, polyester topcoat. Results highlighted crucial role with flat surfaces showing superior resistance compared welded joints, sharp edges, or hollow cylinders. For standard panels, no red rust was observed for over 600 hours chamber, meeting ISO...

The study's primary goal is to determine carbamate pesticide methomyl's kinetic parameters and degradation efficiency from water solution by direct electrochemical oxidation using IrOX anode. Also, define the dependence of methomyl decomposition on initial concentration electrolyte, applied current, pH value. results obey pseudo-first order. Ultraviolet-visible (UV-Vis) spectroscopy followed during study. products were studied Fourier transform infrared (FT-IR) spectroscopy. this study...

In recent decades an increase usage of chemicals in many ways modern life is evident. So, the possibility its intake into organisms, human and animals poisoning health damage, nowadays on a high level, especially when it comes to disaster situations caused by using toxic terrorist attacks or for military purposes. If we look ahead, risk pesticide contamination water soil, as one most important resources surviving, always present. The wide spectra negative effects environment initiate...

The flow of air and aerosol particles through the filtering half masks material depends on structure porosity. It is very difficult to determine behaviour during process extraction retention aerosols. samples five mask models were used in this investigation. Dynamics filtration materials was tested using a method for testing leakage inhalation resistance material, both specified SRPS EN 149:2013. Recording structural changes carried out by technique scanning electron microscopy. experiments...

Among numerous active electrode materials, nowadays applied in capacitor devices, silver nanostructures represent promising electrodes for electrochemical capacitors, owing to their acceptable cost, large surface area and high electrical conductivity. In this work we investigate the capacitance electromagnetic interference shielding effect of two textile materials: polyester cotton fabrics, coated with particles. The multifunctional materials were prepared a manner that fabrics immersed into...

The removal of methomyl, one the most frequent pesticides, from aqueous solutions has been studied by adsorption using reactivated carbon microspheres separated worn filtering protective suits. This study is significant in two aspects - first in-situ pesticides solutions, and second recycling equipment as an effective material for water decontamination. Carbamate pesticide, methomyl aimed to control foliage soil-borne insect pests on various agricultural product. Also, due its toxicity, it a...