Highly adsorption of alginate/bentonite impregnated TiO2 beads for wastewater treatment: Optimization, kinetics, and regeneration studies

In this work, we prepared an eco-friendly, simple, stable new adsorbent SA-Bn-TiO2 NPs hydrogel and Comparative between SA-Bn-TiO2 NPs, SA-Bn, and TiO2 NPs surfaces as adsorbents. The best results of the percentage of removal (E%) of two pollutants including Amoxicillin (AMX) and 4-chlorophenol (CPH) arranged in the order of increasing as SA-Bn-TiO2 NPs > SA-Bn > TiO2 NPs. The good results of the percentage of removal (E%) of SA-Bn-TiO2 NPs were 87.56% and 82.56 for AMX and CPH at the same order. Kinetics adsorption models of two pollutants on SA-Bn-TiO2 NPs was studied and modelled utilizing three adsorptions kinetic. The classification of the kinetic models according to the simulation of the adsorption study is pseudo first order chemisorption. Recyclability and desorption studies indicated the better reusing performance of the prepared composite. Based on the results, the prepared nano-composites can be useful as a promising, cost-effective, environmentally friendly, and efficient material for pollutant decontamination. Studies was carried out utilizing several desorption agents at various concentrations (0.01, 0.05 and 0.1 N) including HNO3, H2SO4, HCl, NaOH, H3PO4, ethanol, acetone and water. The SA-Bn-TiO2 NPs was regeneration with 100% using water

Enhanced removal of amoxicillin and chlorophenol as a model of wastewater pollutants using hydrogel nanocomposite: Optimization, thermodynamic, and isotherm studies

Studies have been conducted to gain understandings and generic knowledge of the equilibrium aspects of adsorption of different adsorbents, SA-Bn-TiO2 NPs surfaces. Removal of two pollutants, Amoxicillin drug AMX, 4-chlorophenol (CPH) from aqueous solutions by adsorption with SA-Bn-TiO2 NPs, SA-Bn and TiO2 NPs surfaces were experimentally determined. The best results were found at pH 6.6, temperature 30 ºC, and adsorbent dosage of 0.05 g of SA-Bn-TiO2 NPs for both studying adsorption capacity and removal percentage. The morphology and structure of the SA-Bn-TiO2 NPs hydrogel beads were investigated utilizing Ultraviolet-Visible Spectroscopy (UV–Vis), Fourier Transform Infrared (FT-IR), Thermo gravimetric analysis (TGA), Field Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy (TEM), Energy Dispersive X-Ray (EDX) and X-ray Diffraction Spectroscopy (XRD). The best contact time for equilibrium reached one hour. It is essentially due to saturation of the active site which does not let further adsorption to take place. For the two pollutants onto hydrogel, best adsorption was found to be at pH 11, and adsorption raised by increase in the pH solution. The value negative of ∆G confirmed that the nature adsorption process is spontaneous. The value positive of ∆S confirmed the raise randomness at the solid-solution interface pending adsorption and the value positive of ∆H confirmed that adsorption process is endothermic

Improvement of Heat Sink Performance Using Graphite and Graphene Coating

This experimental research depicts the role of coating hot surfaces by graphite and graphene on the process of heat dissipation from these hot surfaces. Three aluminum specimens have been prepared for test, one of theme is coated by graphite, another one by graphene a while the third is left free of coating for comparison purpose. Each specimen is tested separately in a home-made wind tunnel. A plate electrical heater is adhered on the bottom of the specimen to simulate the generated energy by a heat sink. A heat sink composed of high thermal conductivity was applied between the heater plate and the base plate of heat sink to reduce the contact resistance to heat flow. The experiments are conducted with four turbulent Reynolds number. The results reveal that the sample coated by graphene exhibits the best thermal dissipation while the uncoated specimen shows the worst thermal performance.</jats:p

Mutagenesis treatment of Mortierella alpina for PUFA production enhancement for future food development

Mutagenesis treatment of Mortierella alpina for PUFA production enhancement for future food developmen

Oleaginous Microbial Lipids’ Potential in the Prevention and Treatment of Neurological Disorders

The products of oleaginous microbes, primarily lipids, have gained tremendous attention for their health benefits in food-based applications as supplements. However, this emerging biotechnology also offers a neuroprotective treatment/management potential for various diseases that are seldom discussed. Essential fatty acids, such as DHA, are known to make up the majority of brain phospholipid membranes and are integral to cognitive function, which forms an important defense against Alzheimer’s disease. Omega-3 polyunsaturated fatty acids have also been shown to reduce recurrent epilepsy seizures and have been used in brain cancer therapies. The ratio of omega-3 to omega-6 PUFAs is essential in maintaining physiological function. Furthermore, lipids have also been employed as an effective vehicle to deliver drugs for the treatment of diseases. Lipid nanoparticle technology, used in pharmaceuticals and cosmeceuticals, has recently emerged as a biocompatible, biodegradable, low-toxicity, and high-stability means for drug delivery to address the drawbacks associated with traditional medicine delivery methods. This review aims to highlight the dual benefit that lipids offer in maintaining good health for disease prevention and in the treatment of neurological diseases

Experimental Investigations of Enhanced Micro Structured Heat Sinks

Abstract In this research, we focus on the performance of heat sink, new configurations of the micro heat sink with comprises of pinned copper pieces of appropriate dimensions have been proposed. Dozens of different shapes micro heat sinks have been manufactured from brass using Laser technique. These heat sinks have been coupled individually with a simulated electronic circuit including a power transistor to freely dissipate the generated heat. Bulk temperatures of heat sink and the power transistor have been measured using a thermal camera. The results showed that, in general, the finned heat sink of either configuration augments heat transfer compared with smooth one. It is found that the maximum percentage reductions in temperature of the transistor are demonstrated with two uncommon configurations, namely the leaves-shaped fin (LSF) 9.352% and the drop-shaped fin (DSF) 9.353%. on the other hand, a staggered wavy fin (SWF) shows minimum percentage reduction in transistor temperature, 0.952%. It has been shown that through this research and by using several models of heat sink, the increase in surface area is not only the factor (major) to increase the heat transfer to the surrounding environment. This makes it possible to design fins with a smaller surface area but more heat dispersionIn this research, we focus on the performance of heat sink, new configurations of the micro heat sink with comprises of pinned copper pieces of appropriate dimensions have been proposed. Dozens of different shapes micro heat sinks have been manufactured from brass using Laser technique. These heat sinks have been coupled individually with a simulated electronic circuit including a power transistor to freely dissipate the generated heat. Bulk temperatures of heat sink and the power transistor have been measured using a thermal camera. The results showed that, in general, the finned heat sink of either configuration augments heat transfer compared with smooth one. It is found that the maximum percentage reductions in temperature of the transistor are demonstrated with two uncommon configurations, namely the leaves-shaped fin (LSF) 9.352% and the drop-shaped fin (DSF) 9.353%. on the other hand, a staggered wavy fin (SWF) shows minimum percentage reduction in transistor temperature, 0.952%. It has been shown that through this research and by using several models of heat sink, the increase in surface area is not only the factor (major) to increase the heat transfer to the surrounding environment. This makes it possible to design fins with a smaller surface area but more heat dispersion.</jats:p

Enhanced Pollutant Adsorption and Antibacterial Activity of a Hydrogel Nanocomposite Incorporating Titanium Dioxide Nanoparticles

This research delineates the synthesis and subsequent application of a hydrogel nanocomposite enriched with titanium dioxide (TiO2) nanoparticles as an adsorbent for pollutants and an antibacterial agent. The nanocomposite was prepared using a hydrothermal method, facilitating the efficient incorporation of TiO2 nanoparticles. Physicochemical characterizations revealed the nanocomposite&rsquo;s augmented adsorption capabilities, specifically for pollutants such as Congo red dye (CR), Amoxilline drug (AMX), and Chlorophenol (CPH). Notably, the study demonstrated that the nanocomposite could be completely regenerated and desorbed in water, attesting to its potential for recyclability. The antibacterial potential of the nanocomposite was also investigated, demonstrating significant efficacy against Gram-negative bacteria (E. coli and Klebsiella spp.) compared to Gram-positive strains. The findings of this study emphasize the potential applicability of the hydrogel nanocomposite as an efficient, reusable agent for pollutant removal and antibacterial activity, providing pertinent insights for environmental remediation and biomedical applications