Rubber Crumb Modified Bitumen Produced from Crude Oils Residuals of Ukrainian Deposits

Self Cite

The process of modifying road bitumen obtained from the residues of Ukrainian oils processing with rubber crumb has been studied. The dependence of the softening temperature, ductility, penetration, and elasticity of the three-component bituminous composition “bitumen : linseed oil : rubber crumb” on its formulation has been examined. Based on the mentioned composition a new type of cold-applied bitumen roofing has been developed. A process flow diagram for the production of modified bitumen and special-purpose bituminous composition has been developed.

Section: Introductionmentioning

confidence: 99%

“…Currently, rubber crumb is one of the most widespread production wastes, which is used to modify bitumen. 1,7,8,19 Nowadays, UCT are used as raw materials for the lowtemperature pyrolysis process or burned. 14 However, their grinding and use in bitumen production is, in our opinion, much more profitable.…”

Section: Introductionmentioning

confidence: 99%

Use of Rubber Crumb Obtained from Waste Car Tires for the Production of Road Bitumen and Roofing Materials from Residues of Ukrainian Oil Processing

Nagurskyy,

Grynyshyn,

Khlibyshyn

et al. 2023

Self Cite

“…Crumb rubber is obtained due to the grinding of used tires. 6,7 It was found that the size of crumb rubber particles should not exceed 0.35 mm and its amount in the modified bitumen should be in the range of 5-9 wt%.…”

Section: Introductionmentioning

confidence: 99%

Isolation of Antibacterial Nano-Hydroxyapatite Biomaterial from Waste Buffalo Bone and Its Characterization

Parajuli¹,

Malla²,

Panchen³

et al. 2022

Hydroxyapatite nanoparticles were isolated from a biowaste, buffalo bone, via the thermal decomposition method. The resulting white powdered material was characterized by Fourier Transformed Infrared (FTIR) spectroscopy, X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray (EDX) analysis. The FTIR spectra confirmed that a heat treatment of the bone powder at the temperature at or above 1223 K removed the organic moieties leading to the formation of a pure inorganic biomineral. The XRD analyses showed that the obtained material was nanocrystalline HAp (nano-HAp) with an average grain diameter of 25 nm, while their rod-shaped particles with their tightly agglomerated morphology were confirmed by the SEM analysis. Besides Calcium (Ca), Phosphorous (P), and Oxygen (O), trace amounts of Aluminum (Al), Magnesium (Mg), Copper (Cu), Zirconium (Zr) and Carbon (C) were also found by EDX analysis. Antibacterial activity of nano-HAp against six standard isolates was investigated by the agar well diffusion method and found to be more susceptible to Acinetobacter baumannii while other standard strains such as Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus showed lesser susceptibility and no antibacterial activity was noticed against Salmonella typhi and Methicillin resistant Staphylococcus aureus (MRSA) with the analysed concentration of nano-HAp suggesting its potential application in biomedical fields.

“…[4][5][6] The main mass transfer process of oil refining in the industry is crude oil fractionation in distillation columns, where different fuel fractions are distilled, which are then used for the production of commercial fuels (gasoline, jet, and diesel fuels) and fuel oil, which is used either as a component of boiler fuel or as a raw material for further deep processing. [7][8] The obtained broad fuel fractions are directed for secondary refining or fed to be separated in order to obtain fuel components. [9][10] In order to obtain a high-quality product, it is important to have not only quality crude oil but also modern technological equipment for processing.…”

Section: Introductionmentioning

confidence: 99%

Use of Auto-Induced Surfactants for Clarification of Biodenitrified Water by Bubble-Film Extraction Method

Gevod¹,

Chernova²,

Kovalenko³

2022

The process of getting clarified denitrified water in a biofilter used combined methods of displacement (piston) biofiltration and bubble-film extraction is studied. It is shown the products of bacterial metabolism released into the water at biofiltration have surfactant properties. They can serve as collectors of the dispersed phase to achieve the desired degree of clarification of water when using bubble-film extraction. The turbidity of the resulting denitrified water does not exceed sanitary and hygienic limits. The concentration of biosurfactants is also significantly reduced.