X-ray Powder Diffraction

Tedesco, Consiglia; Brunelli, Michela

doi:10.1016/b978-0-12-409547-2.12489-8

Cited by 4 publications

(3 citation statements)

References 139 publications

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“…The changes in the morphology of the adsorbent were also analyzed using X-ray Diffraction (XRD) analysis. 57 The Fig. 2 FTIR spectrum of modified palm kernel shell activated carbon (Fe/AC).…”

Section: Characterization Of Adsorbentsmentioning

confidence: 99%

Treatment of oil refinery effluent using bio-adsorbent developed from activated palm kernel shell and zeolite

2020

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Section: Characterization Of Adsorbentsmentioning

confidence: 99%

Treatment of oil refinery effluent using bio-adsorbent developed from activated palm kernel shell and zeolite

2020

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“…Powder X-ray diffraction (PXRD) analyses were performed on a Philips X’Pert MPD X-ray diffractometer with a Cu Kα radiation tube (λ = 1.542 Å, 2.2 kW). The voltage was 45 kV/40 mA, and the angular range was 2.0 and 2.5 at 70° 2θ using a goniometer speed (angular step) of 0.02° 2θ and time per step of 50 or 100 s. This is one of the most common techniques for analysis of powder being able to identify different crystalline phases. − …”

Section: Methodsmentioning

confidence: 99%

Improvement of an Industrial Crystallization Process: The Production of Virginiamycin

Alvarenga

Bernardo

Filho

2020

Ind. Eng. Chem. Res.

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Virginiamycin is an antibiotic produced by Streptomyces virginiae. The recovery process involves a crystallization step (solvent evaporation and precipitation using an antisolvent). To systematically evaluate the industrial crystallization process, the finished product was characterized by granulometry, X-ray diffraction, optical microscopy, scanning electron microscopy, hot-stage microscopy, thermogravimetry, near-infrared spectroscopy, and microbiological activity. The industrial process was simulated on a laboratory scale, analyzing the particle chord length size distribution as a function of time and studying the crystal formation in real time using focused beam reflectance. Analysis of the industrial process through quality by design and design of experiments showed that the crystallization process also influenced the values of the microbiological activity, and the current operation did not result in optimal values. The industrial process was modified within the certified conditions, which resulted in eliminating unexpected stops due to crystallization fouling and yielded high microbiological activity values in the finished product.

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“…The temperature program for a DSC analysis is designed in such a way that the temperature of the sample holder increases linearly with time. The principle underlying this analysis is that when the analyzed sample undergoes a physical transformation there is a change in heat compared to that of the reference sample [35][36][37][38].…”

Section: Thermal Analysismentioning

confidence: 99%

Research on Obtaining Nanostructured Surfaces Efficient in Combating Microbial Biofilm

Tatar¹,

Mihut²,

Pasăre³

et al. 2022

Mater. Plast.

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Infections that occur after the insertion of biomedical devices are a major problem; potential sources of infection are due to the adhesion of bacteria on the surface of implants, bacteria that form biofilms. In order to combat or to effectively prevent various microbial, which occur in medical procedures, we try to make compounds and materials that prevent the formation or development of microbial biofilm. The aim of this study was to obtain nanostructured surfaces based on magnetite, carboxymethylcellulose and ceftriaxone, as films with anti-infective properties in order to use them in the field of current biomedicine. To obtain nanostructured surfaces with high non-stick potential, the carboxymethylcellulose-functionalized magnetite powder was homogenized with an anti-infective agent, ceftriaxone. From the analysis of the obtained results it was found that the nanostructured surfaces obtained had a strong antimicrobial character infections and can be used successfully in the coating of medical implants, in order to combat the microbial biofilm.

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X-ray Powder Diffraction

Cited by 4 publications

References 139 publications

Treatment of oil refinery effluent using bio-adsorbent developed from activated palm kernel shell and zeolite

Treatment of oil refinery effluent using bio-adsorbent developed from activated palm kernel shell and zeolite

Improvement of an Industrial Crystallization Process: The Production of Virginiamycin

Research on Obtaining Nanostructured Surfaces Efficient in Combating Microbial Biofilm

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