Publications by authors named "L Nghiem"

Biochars prepared at 300-700 °C were functionalized with amidoxime groups to evaluate their selective adsorptive removal capabilities towards Cu(II), Cd(II), and Pb(II). The results show that the amidoxime modification significantly enhanced the the Cu(II) adsorption capacity of the biochar prepared at 300 °C (AOBC300) by 1.6 times, reaching 0.

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Lubricants are indispensable in the modern economy for controlling friction and wear across many industries. Traditional lubricants are derived from petroleum crude and can cause significant ecological impact if released into the environment. Microalgae have emerged as a potential alternative to petroleum crude for producing renewable and environmentally friendly biolubricants.

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Novel hydrogel biocatalysts with immobilized lipase, stabilized by ionic liquids (ILs) of different hydrophobicity, were synthesized and evaluated. Variations of the time of immobilization and ratio of substrates during hydrogel synthesis were considered to obtain the most stable biocatalyst with the highest activity. Physicochemical characterization proved the success of the hydrogel synthesis and enzyme deposition on the surface of the support.

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Article Synopsis
  • The study investigated the biocompatibility of squid ink melanin nanoparticles (NPs) on various human stromal cells and zebrafish embryos, finding they are generally non-toxic and compatible.
  • The NPs did not induce cell aging or affect cell movement in human fibroblasts and stem cells, but they hindered tube formation in endothelial cells at certain concentrations.
  • In zebrafish embryos, melanin NPs were shown to be safe, indicating potential for use in biomedical applications, particularly in contexts involving radiation exposure.
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Current methods for measuring microplastic fibres (MPF) are cumbersome, time consuming and unscalable for routine high throughput analysis. This study reports a method for rapidly extracting, quantifying and analysing MPFs in laundry wastewater with several key improvements which vastly enhance overall efficiency and scalability of analysis. FT-IR surveying is employed as a preliminary step in analysis to quickly determine what polymers are present in a sample prior to fluorescence treatment.

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