Sorbent Mass Research Articles

Simultaneous Determination and Optimization of Titan Yellow and Reactive Blue 4 Dyes Removal Using Chitosan@hydroxyapatite Nanocomposites

Chitosan (CS) and hydroxyapatite (HA) nanocomposites have been prepared and used for the simultaneous removal of Titan Yellow (TY) and Reactive Blue 4 (RB 4) dyes from aqueous solutions in single and binary batch systems. Chitosan@hydroxyapatite nanocomposites (NCs) were characterized by diverse techniques such as EDX, FTIR, TGA, and FESEM. Derivative spectrophotometry (DS) was developed to the determination of TY and RB 4 in two-compound mixtures employing the ‘zero-crossing’ technique. The influence of operational variables (such as sorbent mass, contact time, pH, and initial concentration of dyes) on the dyes adsorption is evaluated. A response surface methodology based on a Hybrid central composite design is used to optimize the removal of dyes by CS@HA NCs through a batch adsorption process. In optimum conditions (pH = 4, sorbent dosage = 0.03 g TY (initial TY concentration) = 1100 mg L−1 and RB 4 (initial RB 4 concentration) = 950 mg L−1), the maximum uptake capacities of dyes were obtained 170.7 and 118.4 mg g−1 for TY and RB 4 dyes, respectively. The Langmuir isotherm model was convenient for elucidating the dye adsorption process in both single and binary solutions. The adsorption kinetics of both TY and RB 4 dyes were in best correlation with pseudo 2nd order model. The thermodynamic calculations elaborated that the adsorption of TY and RB 4 dyes was endothermic and spontaneous.

Schiff base functionalized silica gel for simultaneous separation and preconcentration of Cu(II), Ni(II), and Cd(II) in pharmaceuticals and water samples.

A method for separation and preconcentration of Cu(II), Ni(II), and Cd(II) using N-N'-bis(5-methoxsalicylidene)-2-hydroxy-1,3-propanediamine modified silica gel was improved for aqueous samples and pharmaceuticals. Determination of the analytes was achieved by inductively coupled plasma optic emission spectrometry. The experimental conditions including pH value, sample volume, eluent type and volume, sorbent mass, sample, and eluent flow rates were optimized with univariate and multivariate optimization tools. The relative standard deviations of the method were 2.9% for Cu(II), 3.0% for Ni(II), and 3.3% for Cd(II) with recovery values between 98.8 ± 3.2-101.5 ± 3.0%. The limits of detection were found to be 62.4, 39.5, and 28.2 ng L-1 for Cu(II), Ni(II), and Cd(II), respectively. The accuracy of the suggested procedure was tested with the certified reference material (Certipur ICP multi-element standard solution IV) and addition-recovery experiments. The method was successfully applied to eye drop, anesthetic, serum, tap water, mineral water, and spring water samples.

A Simple Combined Dynamic-Equilibrium Model of CO2 Capture by a Pelleted Zeolite Sorbent

Abstract Carbon dioxide (CO2) can be effectively captured from gas mixtures by adsorption on zeolite pellets in fixed-bed columns. In this paper we start from an experimental analysis of CO2 adsorption on a sample of few pellets, to end up with a simulation model for an adsorption column filled with a large number of pellets. The initial experimental analysis is based on dedicated isothermal tests carried out with a gas adsorption analyzer. For the relation between the measured amount of adsorbed CO2 per unit sorbent mass and the input adsorption pressure and temperature, an equilibrium Three-Site Langmuir (TSL) equation is here adopted. Its unknown parameters, namely the saturation capacities, the affinities and the adsorption energies, are estimated by minimizing the error between the equation and the measures. Then, for a whole adsorption column, a simple dynamic model is worked out, based on one-dimensional partial differential equations along the column axial direction: these account basically for mass and energy conservation, for the bulk gas flow and for the porous sorbent. The overall description obtained by combining the TSL equation with the rest of the model is validated against experimental tests, consisting of inlet CO2 molar fraction steps, on a laboratory-scale column.

Equilibrium Studies for Removal of Cadmium (II) Ions Removal from Water Using Activated Carbon Derived from Macadamia Intergrifolia Nutshell Waste Powder

Heavy metals have continued to be of great concern in research as major pollutants of water. Adsorption using low cost adsorbent is a low cost method of the removal heavy metal ions from aqueous solution. In this study activated carbon derived from macadamia intergrifolia nutshell powder was considered as an alternative low cost adsorbent for the removal of Cd(II) ions from aqueous solution. Various physicochemical parameters which included sorbent mass, and initial metal ions concentration isotherms using sorption models were determined. Results from the experiment indicated the optimum values for sorbent mass as 0.3 grams, and initial metal ions concentration as 8mg/l. Adsorption isotherms were found to fit well in Langmuir model (R2=0.9935), Javanovic model (R2 =0.9857) and Freundlich model (R2=0.9911). Additionally, for Langmuir model the value of separation factor (KL) was in the range of 0 to 1 indicating a favorable reaction. For Jovanovic model adsorption energy was found to be 1.00334 l/mg thus an indication of binding vibrations during Cd(II) ions adsorption. FTIR spectrum revealed that the presence of O-H at νmax 3389 cm-1, COO- at νmax 2367 cm-1, C=0 at νmax 1593 cm-1, C-O at νmax 1344 cm-1, P-O at νmax 1206 cm-1 and POO-H at νmax 1110cm-1 functional group in activated carbon enhanced Cd(II) ions removal. The study revealed that activated carbon derived from macadamia intergrifolia nutshell can be used to remove Cd(II) ions from water.

Bisphenol A migration to alcoholic and non-alcoholic beverages – An improved molecular imprinted solid phase extraction method prior to detection with HPLC-DAD

The great concern about food contamination and human exposure to bisphenol A (BPA) necessitated the development of a green and highly selective method for the efficient monitoring of BPA migration from the packaging materials to alcoholic and non-alcoholic beverages. Molecularly imprinted solid phase extraction (MISPE) coupled to high pressure liquid chromatography-diode array detection (HPLC-DAD) using an imprinted sol–gel silica-based hybrid inorganic–organic polymeric sorbent (sol–gel MIP) was applied in the determination of BPA in trace levels. The sorbent mass was optimized. The highest absolute recovery (RE = 84.1%) was obtained with the use of 50 mg of mass sorbent. The extraction protocol involved 0.5 mL sample loading, 15 min of holding time and elution with 2 mL ACN. The imprinting factor (IF) was equal to 3.63 ± 0.11 (n = 3). The developed MISPE-HPLC-DAD method was validated and demonstrated excellent linearity (0.997), high recovery (RE: 99.5% ± 5.7, n = 3), intra-assay repeatability over the range 92.4–98.1%, n = 3; and inter-assay precision over the range 81.2–102.3%, n = 3. Overall, 36 alcoholic and non-alcoholic beverages available in the Greek market were tested for BPA and the quantification results were below the regulation limit for all the samples over the range 0.011–0.041ng mL−1.

Miniaturized Salting-Out Assisted Liquid-Liquid Extraction Combined with Disposable Pipette Extraction for Fast Sample Preparation of Neonicotinoid Pesticides in Bee Pollen.

As the main source of nutrients for the important pollinator honeybee, bee pollen is crucial for the health of the honeybee and the agro-ecosystem. In the present study, a new sample preparation procedure has been developed for the determination of neonicotinoid pesticides in bee pollen. The neonicotinoid pesticides were extracted using miniaturized salting-out assisted liquid-liquid extraction (mini-SALLE), followed by disposable pipette extraction (DPX) for the clean-up of analytes. Effects of DPX parameters on the clean-up performance were systematically investigated, including sorbent types (PSA, C18, and silica gel), mass of sorbent, loading modes, and elution conditions. In addition, the clean-up effect of classical dispersive solid-phase extraction (d-SPE) was compared with that of the DPX method. Results indicated that PSA-based DPX showed excellent clean-up ability for the high performance liquid chromatography (HPLC) analysis of neonicotinoid pesticides in bee pollen. The proposed DPX method was fully validated and demonstrated to provide the advantage of simple and rapid clean-up with low consumption of solvent. This is the first report of DPX method applied in bee pollen matrix, and would be valuable for the development of a fast sample preparation method for this challenging and important matrix.

Хроматографическое определение мельдония с предварительным концентрированием методом твердофазной экстракции на наночастицах магнетита

A comprehensive method for meldonium analysis, based on a combination of magnetic solid-phase concentration of the analyte on magnetite nanoparticles modified with cetylammonium bromide (CTAB) cations and its subsequent analysis by thin-layer chromatography (TLC) were developed in the process of study. The influence of a number of factors on meldonium sorption was studied, namely: pH, sorbent mass, sorption and mixing times; optimal extraction conditions were determined. It was found that quantitative sorption proceeded in 20 min with a meldonium extraction degree of 88%. Ethanol was found to be an eluent to desorb the analyte by 95%. The calibration dependences plotted with and without concentration of meldonium were compared. It was established that the use of concentration on two mg of CTAB-modified nanomagnetite reduces the lower limit of the analyzed contents of meldonium in 25 ml of solution by 5 times.

Synthesis and characterization of functionalized carbon nanofibers for efficient removal of highly water-soluble dextromethorphan and guaifenesin from environmental water samples

Pharmaceutical residues in water and wastewater cause several environmental problems as well as health issues in living beings. This study demonstrates the preparation and functionalization of low-cost carbon nanofiber for the simultaneous removal of dextromethorphan (Dex) and guaifenesin (Gua) from aqueous solutions and real water samples. A batch procedure was followed to optimize the adsorption conditions, such as contact time, solution pH, sorbent mass, and temperature. The results showed a significant similarity among these drugs in terms of their adsorption behaviour. For pristine carbon nanofiber, the adsorption capacities were 119.0 mg/g and 73.5 mg/g for Dex and Gua, respectively. The adsorption capacities of functionalized carbon nanofiber were estimated to be 172.4 mg/g and 250.0 mg/g for Dex and Gua, respectively. Their adsorption kinetics were observed to fit well with the pseudo-second-order model. In addition, their adsorption isotherms were in good agreement with the Langmuir model. Furthermore, the thermodynamic parameters, including free energy, enthalpy, and entropy, were calculated and discussed. The carbon nanofibers exhibited significant potential in the removal of these pollutants from aqueous solutions and real environmental samples, especially at low temperatures. The removal efficiency from bottled water, tap water, and the Red Sea water were estimated at 96 %, 94 %, and 94 %, respectively. The recyclability of the adsorbents was investigated and discussed.

Cross-linked chitosan into graphene oxide-iron(III) oxide hydroxide as nano-biosorbent for Pd(II) and Cd(II) removal

In this study, chitosan cross-linked into graphene oxide/iron(III) oxide hydroxide nanocomposites. For this purpose, to a mixture of graphene oxide in deionized water was added to iron(II) sulfide and hydrogen peroxide solution. The pH was then adjusted. Then, chitosan dissolved in acetic acid was added. This compound applied as nano-biosorbent for the removal of Pd(II) and Cd(II) ions from aqueous solution. Nanocomposites were characterized by FT-IR, XRD, SEM, and EDX analysis. The effects of valid parameters such as pH (2–9), sorbent mass (0.01–0.1 g), temperature (25–60 °C), and contact time (20–50 min) were investigated in adsorption of Pd(II) and Cd(II) ions. The results showed that oxygen-containing functional groups on the surface of graphene oxide, iron(III) oxide hydroxide nanoparticles, and the abundant amino and hydroxyl functional groups of chitosan chain were shown excellent potential for Pd(II) and Cd(II) adsorption. The removal percentage of Pd(II) and Cd(II) were 84 and 95%, respectively. The Freundlich and Langmuir adsorption isotherms were investigated for the description of adsorption onto nanocomposites. However, the Freundlich model showed a higher correlation coefficient (R2) than Langmuir isotherm. The pseudo-second-order equation was the best fitted kinetic model for this process.

Z-sep+ based QuEChERS technique for the pre-concentration of malathion pesticide in fruits followed by analysis using UV-Vis spectroscopy

ABSTRACT In this work, the concentrations of malathion in fruits were determined using UV-Vis spectrophotometry prior to pre-concentration using QuEChERS. The Z-sep+/PSA sorbent combination was used for the d-SPE clean-up and extraction was done using acetonitrile during QuEChERS. The absorbance of malathion was measured using a UV-Vis spectrophotometer at a wavelength of 415 nm. The QuEChERS parameters, which included type and volume of extraction solvent, type and mass of sorbents, and centrifugation rate, were optimised prior to application of the developed method to real fruit samples. The linear range was from 0.1 to 0.9 mg kg−1 while the coefficient of determination (R2) was 0.9999. The limit of detection (LOD) for malathion was found to be 0.017 mg kg−1 and the limit of quantification was 0.05 mg kg−1. Orange samples were found to have no malathion residues when the developed method was applied to them while the concentrations of malathion in apple and pear samples were 0.07 mg kg−1 and 0.09 mg kg−1 respectively.

Improved quantification of lipid mediators in plasma and tissues by liquid chromatography tandem mass spectrometry demonstrates mouse strain specific differences

A liquid chromatography tandem mass spectrometry-based method for the quantitation of 39 lipid mediators in four sample types and in two mouse strains is described. The method builds upon existing methodologies for analysis of lipid mediators by A) utilizing a bead homogenization step for tissue samples; this eliminates the need for homogenization glassware and improves homogenization consistency, B) optimizing the isolation and purification of lipid mediators with polymeric reverse phase SPE columns with lower sorbent masses; this results in lower solvent elution volumes without loss of recovery and C) utilizing an on-column enrichment method to improve analyte focusing before chromatographic separation. The method is linear from 0.25-250 pg on column for low level lipid mediators and from 5-5000 pg on column for high level lipid mediators. The addition of a methyl formate elution step to a previously published method dramatically improved precision and recovery for the cysteinyl leukotrienes. Accuracy and precision for 4 different sample types including human plasma, mouse lung, mouse spleen and mouse liver is demonstrated. Liver samples had extremely high levels of a tentatively identified bile acid which interfered with quantitation of resolvin E1, 11B-prostaglandin F2a and thromboxane A2. Results from 2 different tissue sources from untreated mice (C57BL/6 versus BALB/c) showed dramatically different concentrations of lipid mediators.

Characterization valorized anthracite and its application in manganese (VII) adsorption from aqueous solution; batch and column studies

Abstract The current study spotlights the modification of Anthracite (An) by microwave beam to form modified anthracite (MAn). The precursor (An) and modified anthracite (MAn) were investigated and characterized by several techniques such as XRD-EDAX, TGA, DSC, SEM, Raman spectra and BET surface area (SBET). The Mn (VII) isotherm notification was illustrated by a Langmuir model (R2 = 0.999) and the maximum monolayer coverage (QO) 555.5 mg/g that approved the surface symmetry of the modified anthracite. Whereas, The Mn (VII) kinetic knowledge was designated by the pseudo-second-order equation as specified by the high determination coefficient (R2 = 0.99342). The thermodynamic parameters (ΔH⁰, ΔS⁰, and ΔG⁰) were determined and their values indicate that the sorption of Mn (VII) on (MAn) is endothermic and spontaneous processes as well as physisorption on the surfaces of MAn. Moreover, in the dynamic mode, the adsorption capacity Ts was 58.6 mg/g or 114 mg, finally, the column recycled at least five times using H2SO4 (1 M) for each regeneration without considerable loss in sorbent mass. Therefore, MAn is estimated as a better Alternative technique for the elimination of Mn (VII) owing to a low quotation and high efficacy in this implementation.

Sorption Features of Polyurethane Foam Functionalized with Salicylate for Chlorpyrifos: Equilibrium, Kinetic Models and Thermodynamic Studies.

Commercial polyurethane foam was treated with salicylate salt to synthesize PUFSalicylate (PUFS) as a novel, promising, stable and inexpensive adsorbent for chlorpyrifos (CPF) extraction. The properties of PUFS were investigated using UV–Vis spectroscopy, apparent density, FTIR spectroscopy, pHZPC, BET surface area, elemental analysis, TGA and DTG tests. Batch experiments were performed for the sorption of CPF under different salicylate concentrations, pH, shaking time, ionic strength, agitation speed, sorbent mass, batch factor and initial concentration of CPF. The results confirmed that 97.4% of CPF in a 25 mL solution, 10 μg/L concentration, could be retained by only 0.3 mg of PUFS (1:105mass ratio of PUFS: solution). In addition, the maximum capacity of PUFS for the sorption of CPF was 1249.8 μg/mg (3.9 × 10−5 mol/g) within 180 min. The negative values of ΔH° and ΔG° indicated that the sorption of CPF onto PUFS is an exothermic spontaneous process (favorable). The calculated data from the experimental procedures fitted perfectly with Freundlich isotherm (R2 = 0.9952) and the kinetic Equation of pseudo-second order. In addition, the R2 value in the Elovich Equation recorded higher when compared to the Morris–Weber and Bangham Equations; hence, the pore diffusion is not the rate-determining step. Thus, the use of PUFSalicylate for the removal of chlorpyrifos contaminations from agriculture runoff is applicable.

Overall evaluation of single- and multi-halide composites for multi-mode thermal-energy storage

Sorption thermal-energy storage plays a critical role in addressing the mismatch between thermal-energy consumption and supply. However, the previous evaluations of sorption thermal-energy storage materials and cycles were mainly based on the equilibrium results of energy storage density. In this study, we develop evaluation models to provide an optimal working pair selection reference for single-stage sorption/resorption cycles under short- and long-term storage modes, and compare the thermal-energy storage density in the discharging stage, the effective discharging time, the temperature gradient, the exergy output during the discharge phase (ΔEdis), and the exergetic coefficient of performance (ECOP). By considering ΔEdis as a criterion, the best halides are determined to be NH4Cl and CaCl2 for single-stage sorption cycles at heat-source temperatures of 60–80 °C and 90–180 °C, respectively; however multi-halide can be a better choice when the temperature varies over optimal temperature range of single-halide, i.e., from 80 °C to 160 °C. Resorption is also analysed in this study. The results show that multi-halide is not suitable for resorption cycles because a part of the components will fail to sorb during the discharging stage. The effective reaction-temperature ranges of the resorption cycles are wider than those of the corresponding sorption cycles, whereas the performance values decrease mainly because of the larger required sorbent mass.

Determination of fenthion in urine samples using molecularly imprinted nanoparticles: modelling and optimisation by response surface methodology

ABSTRACT In the present study, a molecularly imprinted solid-phase extraction (MISPE) technique coupled with high-performance liquid chromatography was applied for selective extraction and recognition of fenthion insecticide in the biological sample. The nanoparticles of fenthion imprinted polymer were prepared by precipitation polymerisation using methacrylic acid (MAA) as functional monomer, ethylene glycol dimethacrylate (EGDMA) as cross-linker, and 70 mL of chloroform. Morphological and structural characterisation was achieved by scanning electron microscopy and infrared spectrometry. The optimisation of parameters being effective on extraction yield was carried out by employing the central composite design (CCD). The empirical models were developed to link the output response and input variables and the proposed models were tested for significance through analysis of variance (ANOVA). The optimum conditions leading to the maximum efficiency of MISPE were sorbent mass of 8.61 mg, sample pH 4.93, sample flow rate of 2.07 mLmin−1, as well as 1.94 mL of methanol/acetic acid (95.7:4.3, v/v) at the flow rate of 1 mLmin−1 as elution solvent. Under the optimised conditions, a linear range of 20–120 μgL−1 was obtained and the limit of detection was found to be 4.58 μgL−1. Analysis of spiked urine samples demonstrated the satisfactory efficiency of the designed protocol ranging from 92.69 to 95.64% and the relative standard deviation (RSD) was calculated to be lower than 3.75%.

A comparison between Box–Behnken design and artificial neural network: Modeling of removal of Phenol Red from water solutions by nanocobalt hydroxide

AbstractHere, we describe the successful removal of Phenol Red from aqueous solutions by nanocobalt hydroxide. Also two approaches, artificial neural network (ANN) and Box–Behnken design (BBD), are used to investigate predictive models for simulation and optimization of the dye removal process. The effect of process variables (such as pH, sorbent dosage, and Phenol Red concentration) on the removal efficiency are investigated through performing the BBD. A training set for ANN is obtained using the same design. Statistical values show ANN model is superior to BBD model. Based on the validation data set, ANN model has higher value of coefficient of determination (R2: 0.99 ANN > 0.84 BBD), lower values of root mean square error of prediction (RMSEP: 3.17 ANN < 3.99 BBD), mean square error (MSE: 10.08 ANN < 15.95 BBD), and relative standard error of prediction (REP: 3.89 ANN < 4.89 BBD). According to obtained results, ANN has better prediction performance in comparison with BBD. In addition, the maximum removal efficiency (%Rmax = 99.9) is found at the initial concentration of dye = 68.08 (mg/L), pH = 2.0, and sorbent mass = 9.57 g/L by performing the BBD.

Laboratory and Commercial Synthesized Zinc Oxide Nanoparticles Adsorption onto Coconut Husk: Characterization, Isotherm, Kinetic, and Thermodynamic Studies

The accelerating application of zinc oxide nanoparticles (ZnO-NPs) has called for attention to their potential environmental and human health risks. This work aimed to investigate the sorption efficiency of laboratory and commercial synthesized nanocrystalline zinc oxide onto raw coconut husk in a batch adsorption study. Characterization of samples was performed by employing spectroscopies techniques such as X-ray Diffraction Spectroscopy, Field Emission Scanning Electron Microscopy, Transmission Electron Spectroscopy, Fourier transform IR Spectroscopy, and Brunauer–Emmett–Teller. A spherical shaped nanocrystalline ZnO with a mean crystallite and particle size of 14.7 nm and 24 nm by XRD and TEM was synthesized as compared to the commercial ZnO-NPs of size < 50 nm. The maximum percentage removal of 88% (0.13 mg/g) and 90% (0.16 mg/g) for laboratory synthesized and commercial ZnO-NPs respectively was recorded at an optimum contact time of 80 minutes. The data also indicated 2.0 g sorbent mass and pH of 8 as the optimum conditions for maximum percentage removal of these nanoparticles. Both Langmuir and Freundlich models fitted best for laboratory synthesized ZnO-NPs with a maximum capacity of 0.797 mg/g, whereas Langmuir isotherm model alone with a maximum capacity of 0.710 mg/g fitted well for commercial ZnO-NPs. The n-value from the Freundlich model, as well as separation factor (RL) were greater than unity suggesting a favorable adsorption process. The study obeyed pseudo-second-order, which was exothermic with a high degree of freedom of sorbent-sorbate interaction. The results suggested that coconut husk is potentially scalable for removing ZnO-NPs from wastewater.

Study of interactions between rhodamine B and a beidellite-rich clay fraction

AbstractThe interaction between a basic dye, rhodamine B, and a separated fine fraction from natural clay was studied. Chemical analysis, X-ray diffraction and Fourier-transform infrared spectroscopy confirmed the predominance of beidellite in the fine clay fraction. The interaction of rhodamine B with the fine clay fraction showed that sorption was fast and followed a pseudo-second-order kinetic model. The comparison between sorbed rhodamine B amounts as a function of the various experimental parameters such as pH, sorbent mass, dye concentration and the presence of competing ions suggests that: (1) the sorption process is largely pH-dependent; (2) significant competition is observed between the dye and the Ca2+ and Mg2+ ions; (3) the sorption proceeds, principally, by a cation-exchange mechanism; and (4) the sorption capacity of the fine fraction in the presence of competing cations such as Ca2+ is ~0.28 mmol g–1.

Cooling assisted headspace microextraction by packed sorbent coupled to HPLC for the determination of volatile polycyclic aromatic hydrocarbons in soil

A headspace microextraction by packed sorbent technique (HS-MEPS) was developed that is assisted by cooling the extraction phase and, in the same time, heating the sample matrix. The innovated cooling assisted HS-MEPS system was optimized for the extraction and HPLC determination of volatile polycyclic aromatic hydrocarbons (PAHs) in solid samples. Amino ethyl-functionalized SBA-15 was used as a nanoporous sorbent for packing the conical hub of the MEPS syringe. For efficient extraction of PAHs, several parameters such as the nature and mass of sorbent, eluent type, elution volume, extraction temperature and number of draw-eject cycles of the syringe were studied and optimized. Under the optimal experimental conditions, only 2 mg of the sorbent was sufficient by applying a temperature of 0 °C to the sorbent while the sample was heated up to 150 °C. Linear calibration curves (R2 > 0.95) were obtained for all the studied PAHs and their quantitation limits were in the range of 0.042–0.25 ng g−1. The method was successfully applied to the extraction and HPLC analysis of PAHs in some polluted soil samples.

Study of the Pt(IV) sorption on the Aspergillus niger O-5 biomass for remediation and/or analytical purposes

The use of Pt (IV) salts in different processes generates, even at low concentrations, toxic residuals that contaminate natural waters. For this reason, the improvement of limit of detection in Pt(IV) quantification for control and monitoring purposes, as well as, the development of methodologies for remediation is convenient. This study was aimed at the assessment of the dead Aspergillus niger O-5 biomass without treatment and chemically treated as sorbents for Pt(IV) concentration. The influence of pH and volume of dissolution, sorbent mass and contact time on the Pt(IV) sorption capacity of materials was studied. At optimized experimental conditions, a maximum sorption capacity of 79.63 ± 0.03 mg·g−1 was achieved using cetyltrimethylammonium bromide (CTAB)- treated biomass. A good fitting of the pseudo-second-order model of Ho to the experimental kinetic data suggested that chemisorption or chemical reactivity processes are involved in the biosorption. Those processes could be explained via the substitution of the hydrogen present in N-H bonds of amide groups on the biomass surface for Pt(IV) species in dissolution. This hypothesis was supported by the XPS analysis results. The best Pt(IV) desorption equal to 99% was achieved, when 15% (m/v) thiourea dissolution was used as eluent.