Biosorption of thorium onto Chlorella Vulgaris microalgae in aqueous media.

Thorium biosorption by a green microalga, Chlorella Vulgaris, was studied in a stirred batch reactor to investigate the effect of initial solution pH, metal ion concentration, biomass dosage, contact time, kinetics, equilibrium and thermodynamics of uptake. The green microalgae showed the highest Th adsorption capacity at 45 °C for the solution with a thorium concentration of 350 mg L and initial pH of 4. The amount of uptake raised from 84 to 104 mg g as the temperature increased from 15 to 45 °C for an initial metal concentration of 75 mg L at pH 4.

Bacterial Contamination of Collected Cockroaches and Determination Their Antibiotic Susceptibility in Khorramabad City, Iran.

Background: Cockroaches are one of the most important carriers of pathogenic microorganisms. Therefore, the presence of cockroaches in public places, especially in hospitals, homes, and restaurants, is dangerous, and threatens the health of society, people, and the environment. The aim of this study was evaluation of bacterial contamination of cockroaches and the sensitivity of these bacteria to various antibiotics, captured from Khorramabad City, Iran.

Computational fluid dynamics simulation of two-phase flow patterns in a serpentine microfluidic device.

In the current research work, the flow behavior of a liquid-liquid extraction (LLE) process in a serpentine microchannel was analyzed. The simulation was performed using a 3D model and the results were found to be consistent with experimental data. The impact of the flow of chloroform and water on the flow model was also examined.

Applying a microfluidic device to improve the Ca separation performance of the liquid-liquid extraction process.

This study investigates the application of extraction solvent in a new microfluidic apparatus to separate calcium ions (Ca). Indeed, a serpentine microfluidic device has been utilized to separate calcium ions. The flow regime map shows that it is possible to completely separate organic and aqueous phases using the serpentine microfluidic device.