Saccharomyces cerevisiae biomass was activated chemically, and its ibuprofen (IBP) biosorption capabilities were assessed regarding IBP removal from an aqueous solution. The effects of pH (2-10), contact time (0-90 min), concentration (5-35 mg L-1), temperature (20, 30, 40°C) evaluated in batch studies. Higher rates found at 2.0. pseudo-second-order kinetic model best described the experimental...

Antibiyotik kalıntılarının su kaynaklarındaki toksisitesi çevreyi olumsuz etkilemektedir. Son yıllarda yapılan çalışmalar antibiyotikler gibi organik kirleticilerin ucuz ve çevreye uyumlu adsorbentlerle sulu çözeltilerden giderimine odaklanmıştır. Bu çalışmada, doğal Manisa-Gördes klinoptiloliti oksitetrasiklin hidroklorür (OTC-HCL) adsorpsiyonu, kesikli sisteminde 298-323 K'de incelenmiştir. p...

Abstract The adsorption potential of raw pomegranate peel powder (PMPP) for lead (Pb) ions was investigated via batch mode at varying initial adsorbate concentration, contact time, and adsorbent concentration. PMPP extensively characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy-dispersion (EDX), thermogravimetry...

Modified sorption materials were produced by treating earleaf acacia ( Acacia auriculiformis ) bark with low-concentration (1-3%wt) sulfuric acid solutions. The properties of native and modified for zinc (II) ions studied. Based on the values initial equilibrium concentrations in solution, materials' capacity (A, mmol/g) was found adsorption isotherms plotted. It that are type I according to IU...

The efficient removal of the antibiotic ciprofloxacin (CIP) from aqueous samples using magnetic nanosorbents prepared three sulfated polysaccharides, κ-, ι- and λ-carrageenan an alkoxysilane agent containing a reactive epoxide ring is described. were characterized in detail FTIR spectroscopy, solid-state 29Si 13C NMR spectroscopy elemental microanalysis. synthesis method was more effective for ...

Abstract The present research evaluates the influence of modification smectite clay (BC) on its adsorption capacity anionic dyes from aqueous solutions. Thermal (BC 250), acidic H 2 SO 4 ), and alkaline NaOH) was carried out. clays were characterized by X-ray powder diffraction, energy-dispersive spectroscopy, Fourier transform infrared spectroscopy. Adsorption investigated batch experiments at...

In this work the feasibility of employing calcareous soil to remove lead (II) ions from its aqueous solutions was investigated under batch mode. The influence of solution pH, sorbent dose, initial lead (II) concentration, contact time, stirring rate and temperature on the removal process were investigated. The lead adsorption was favored with maximum adsorption at pH 6.0. Sorption equilibrium t...

Polyurethane foam functionalized with β-naphthol was prepared by covalently linking the reagent with the polyurethane foam matrix through –N=N– groups. The reagent-bonded polyurethane foam (β-Nap-PUF) was characterized by use of elemental analysis, UV–visible and IR spectroscopy, thermal analysis (TGA), density, and stability. β-Nap-PUF was found to be very suitable for preconcentration and det...

This study aims to evaluate the adsorption isotherm of carbon microparticles prepared from pumpkin (Cucurbita maxima) seeds for adsorbing curcumin (as a model dye). The results were derived and compared using kinetics approach based on several standard models, namely Langmuir, Temkin, Freundlich, Dubinin-Radushkevich models. second aim is effects particle size (from 100 1000 mm) characteristics...

This paper presents the results of studies for niobium sorption from chloride solutions with use anion-exchange organic sorbents: Amberlite IRA-67, Purolite A-100, AB-17-8, and AN-2FN. Niobium was performed model niobium-containing solutions. Data on comparative characteristics studied sorbents were obtained, static exchange capacity sorbents, values distribution coefficients, extraction degree...