The use of microorganisms in biosorption is one of the most promising ways to remove trace amounts of heavy metal ions. Nevertheless, the enhancement of the successful removal of heavy metal ions by using different combinations of biosorbents is not generally guaranteed which leaves room to explore the application of the technique. In this study, the performance of free and immobilized forms of a yeast strain, Candida krusei (C. krusei), and calcium alginate (CaAlg) are evaluated for their ability to remove copper(II). Infrared spectroscopy, studies on the effects of pH and temperature, and kinetics and isotherm modelling are carried out to evaluate the biosorption. The infrared spectroscopy shows that the primary biosorption sites on the biosorbents are carboxylate groups. In addition, a higher pH and higher temperatures promote biosorption while a decline in biosorption ability is observed for C. krusei at 50 °C. The kinetics study shows that C. krusei, CaAlg and immobilized C. krusei (MCaAlg) conform with good correlation to pseudo-second order kinetics. MCaAlg and CaAlg fit well to the Langmuir isotherm while C. krusei fits well to the Temkin isotherm. From the experimental data, encapsulating C. krusei showed improved biosoprtion and address clogging in practical applications.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5438343 | PMC |
http://dx.doi.org/10.1038/s41598-017-02350-7 | DOI Listing |
Med Mycol
December 2024
Department of Medicine, Division of Infectious Diseases, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
Understanding the impact of different Candida species on patient outcomes is crucial for effective management and treatment strategies. This study aims to comprehensively analyze the association between Candida species and mortality in documented candidemia. We queried TriNetX, a global research network database, to identify patients diagnosed with candidemia through polymerase chain reaction from 2020-2023.
View Article and Find Full Text PDFMaterials (Basel)
November 2024
CITEVE-Technological Centre for Textile and Clothing of Portugal, 4760-034 Vila Nova de Famalicão, Portugal.
This study explores the bioactive potential of banana leaf extracts and their innovative integration into knitted hemp fabrics. To obtain the extracts, distinct extraction methodologies were employed, namely conventional extraction, ultrasound-assisted extraction, and pressurized-liquid extraction. Aqueous and hydroethanolic solvents, namely 20% (/) and 50% (/), were employed during the extraction process.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.
The environmental impact of plastic waste is a growing global challenge, primarily due to non-biodegradable plastics from fossil resources that accumulate in ecosystems. Biodegradable polymers like polyhydroxyalkanoates (PHAs) offer a sustainable alternative. PHAs are microbial biopolymers produced by microorganisms using renewable substrates, including agro-industrial byproducts, making them eco-friendly and cost-effective.
View Article and Find Full Text PDFPlants (Basel)
December 2024
Research Center of Medicinal and Aromatic Plants, "George Emil Palade" University of Medicine, Pharmacy, Sciences and Technology of Targu Mures, 540139 Targu Mures, Romania.
This study aimed to synthesize palladium nanoparticles (PdNPs) using bioactive compounds from aqueous extracts of species (, , and ) with potential biomedical applications. To optimize PdNPs biosynthesis, various parameters were explored, including the concentration of PdCl, the extract-to-PdCl ratio, and the pH of the solution. The nanoparticles were characterized using ultraviolet/visible spectroscopy (UV/Vis), Fourier-transform infrared spectroscopy (FTIR), and dynamic light scattering (DLS).
View Article and Find Full Text PDFRes Vet Sci
December 2024
Programa de Pós-Graduação Stricto sensu em Biociência Animal, Universidade de Cuiabá (UNIC), Cuiabá, MT, Brazil.
Companions' animals can present a risk for the transmission of opportunistic diseases to their owners, including those caused by yeasts of the Candida genus residing in their oral microbiota. This study aimed to isolate and identify yeasts from the oral cavity of dogs and assess their susceptibility to antifungals. Yeast species were identified using automated methods MALDI-TOF-MS and VITEK 2 from 50 dogs (aged 2-4 years, various breeds).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!