Adsorption of Cr (III) using an Iranian natural nanoclay: applicable to tannery wastewater: equilibrium, kinetic, and thermodynamic

Oskui, Fatemeh Notghi; Aghdasinia, Hassan; Sorkhabi, Mahsa Golghasemi

doi:10.1007/s12665-019-8104-8

Cited by 35 publications

(14 citation statements)

References 65 publications

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“…Also, maximum mono‐layer uptake capacity calculated by Langmuir model ( q cal = 500 mg/g) is higher than that of experimental value ( q exp = 128 mg/g). So, adsorption is monolayer and surface is not covered completely by cadmium 61 . For the adsorption of Cd 2+ from aqueous systems by SDS modified mesoporous silica MCM‐41, 62 adsorption of cadmium from aqueous solution using Enteromorpha prolifera biochar modified with different chemical reagents 63 and cadmium adsorption using guanine‐functionalized mesoporous silica [SBA‐16‐g], 56 Langmuir isotherm was the predominant isotherm model between other isotherm models.…”

Section: Resultsmentioning

confidence: 99%

Cadmium cation uptake through amine and acid post‐functionalized Santa Barbara Amorphous materials; comprehensive adsorption studies

Binaeian

Esfandyari

Valipour

et al. 2020

Env Prog and Sustain Energy

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In this research, a novel adsorbent, nitrilotriacetic acid anhydride (NTAA) and 3‐aminopropyltriethoxysilane (APTES) modified Santa Barbara Amorphous materials (SBA‐15) as a mesoporous silica was synthesized and applied for the adsorption of cadmium solution. X‐ray diffraction, transmission electron microscopy, scanning electron microscopy, nitrogen adsorption–desorption isotherms and Fourier transform infrared analysis were used. The adsorption experiments were performed during batch system containing different concentrations of cadmium solution (60–120 mg/L) in pH range of 2–10, adsorbent dosage of 100–600 mg/L with contact time interval of 15–120 min. The maximum cadmium removal was achieved at pH 6 with 250 mg/L of adsorbent after 60 min. The proposed mechanisms for the removal and capture of Cd+2 ions by adsorbent are electrostatic interactions and chelation. The equilibrium studies prove that the experimental data are compatible with the Langmuir isotherm model well with the maximum adsorption capacity of 500 mg/g. Kinetic and thermodynamic studies also indicate that pseudo‐second order kinetic model is the predominant model and the adsorption process is exothermic. This study reveals a high capability of novel nano‐adsorbent for the efficient removal of hazardous heavy metal cations and anions from wastewater.

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Section: Resultsmentioning

confidence: 99%

Cadmium cation uptake through amine and acid post‐functionalized Santa Barbara Amorphous materials; comprehensive adsorption studies

Binaeian

Esfandyari

Valipour

et al. 2020

Env Prog and Sustain Energy

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“…It is well known that clay minerals have a negative surface charge (Liu et al, 2016;Oskui, Aghdasinia and Sorkhabi, 2019a). In a previous paper carried out by the authors that thoroughly investigated the !"…”

Section: Study Of the Adsorption Mechanismmentioning

confidence: 99%

“…If the adsorbent could simultaneously remove contaminants, it would reduce operation cost, complexity and equipment investment (Wang et al, 2017). Clays are adsorbents with advantages, such as high cation exchange capacity (CEC), high chemical and mechanical stability, low cost, high abundance and easy manipulation and modification (Srinivasan, 2011;Oskui, Aghdasinia and Sorkhabi, 2019a). Clays are hydrophilic materials with negative surface charge and these properties limit their usage in the removal of various contaminants (Liu et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous adsorption of chromium and acidic dye from leather tannery model wastewater using a novel modified nanoclay

et al. 2021

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Simultaneous removal of !" #$ and acidic dye from model tannery wastewater was investigated using local nano clay modified by 3-chloro-2-hydroxypropyltrimethylammonium chloride (CHPTAC) surfactant. X-ray fluorescence (XRF), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), carbon, hydrogen, nitrogen and sulfur analysis (CHNS), Brunauer-Emmet-Teller (BET) analysis and pH of zero point charge (%& '() ) analyses were carried out for characterization of the adsorbent, and adsorptive properties of the modified clay were investigated by batch experiments. The effects of essential parameters, such as adsorbent dosage, initial solution pH, initial solution concentration, contact time, and temperature, were studied. Maximum adsorption values (99.74% for !" #$ and 83.26% for dye) were obtained in the following conditions: pH of 4, initial concentration of 100 +,/., adsorbent dosage of 15000 +,/., contact time of 30 min. The effect of contaminants' concentration was also investigated through response surface methodology (RSM), central composite face-centered (CCF) design and an empirical model was presented. The results of kinetic models' studies demonstrated that simultaneous adsorption of contaminants follows the pseudo-second-order model, and the adsorption data of single and binary solutions fitted nonlinearly to isotherm models showed that the adsorption of Cr (III) from binary and single solutions follow Langmuir and Dubinin-Radushkevitch (D-R) isotherms, respectively. Adsorption of dye from both single and binary solutions follows Redlich-Peterson (R-PT) isotherm. Maximum adsorption capacities were obtained to be 193.1390 12 2 and 144.1782 12 2for !" #$ and dye, respectively. Synergistic and antagonistic adsorptions were observed in binary solutions.

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“…It is widely used due to its inherent properties and advantages like the complete removal of contaminant, simplicity, and cost‐effectiveness . Several researches have been performed in the recent years for the removal of heavy metals from wastewaters using different cost‐effective adsorbents like Calymperes delessertii Besch, Pinus sylvestris bark, activated carbon, biogas residual slurry, brown alga Ecklonia, peat, wine processing waste sludge, palm flower and clays . Among all, clays are of special importance .…”

Section: Introductionmentioning

confidence: 99%

“…2 Several researches have been performed in the recent years for the removal of heavy metals from wastewaters using different cost-effective adsorbents 11 like Calymperes delessertii Besch, 12 Pinus sylvestris bark, 13 activated carbon, [14][15][16][17] biogas residual slurry, 18 brown alga Ecklonia, 19 peat, 20 wine processing waste sludge, 21 palm flower 22 and clays. [23][24][25][26][27] Among all, clays are of special importance. 28 Different types of clays and clay minerals play important roles in the environment and they act as natural scavengers of contaminants via ion exchange processes and adsorption, due to their high cation exchange capacity, large specific surface area and amphoteric hydroxyl groups with the ability to react.…”

mentioning

confidence: 99%

Modeling and optimization of chromium adsorption onto clay using response surface methodology, artificial neural network, and equilibrium isotherm models

Oskui

Aghdasinia

Sorkhabi

2019

Env Prog and Sustain Energy

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Response surface methodology (RSM) was used for optimization of the adsorbent dosage, initial solution pH, initial ion concentration, and contact time in removal of Cr (III) with local nanoclay. The adsorption process was modeled by RSM and artificial neural network (ANN). The process was done in batch mode by central composite design (CCD) and the same design was applied for training ANN. The optimum condition was determined to be 500mg/L for adsorbent dosage, initial pH of 5, initial chromium concentration of 180mg/L and 20 min of contact time. In these conditions qRSM = 238.7780mg/g and qANN = 237.5152mg/g which indicate removal percentage of 72.45% and 72.07%, respectively. RRSM2=0.9784 and RANN2=0.9834 indicate that the two models can predict the adsorption of Cr3+ properly. The two parameter Langmuir, Freundlich, Dubinin‐Radushkevich (D‐R), Temkin and three parameter Redlich‐Peterson (R‐PT), Sips and Toth isotherm models were applied to equilibrium data by minimizing the sum of squared errors (SSE), sum of the absolute errors (SAE), average relative errors (ARE), Hybrid fractional error function (HYBRID), Marquardt's percent standard deviation (MPSD), and nonlinear chi‐square test error functions. The results showed that the HYBRID error function gives the lowest value and the R‐PT model fits the data better than other isotherm models.

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Adsorption of Cr (III) using an Iranian natural nanoclay: applicable to tannery wastewater: equilibrium, kinetic, and thermodynamic

Cited by 35 publications

References 65 publications

Cadmium cation uptake through amine and acid post‐functionalized Santa Barbara Amorphous materials; comprehensive adsorption studies

Cadmium cation uptake through amine and acid post‐functionalized Santa Barbara Amorphous materials; comprehensive adsorption studies

Simultaneous adsorption of chromium and acidic dye from leather tannery model wastewater using a novel modified nanoclay

Modeling and optimization of chromium adsorption onto clay using response surface methodology, artificial neural network, and equilibrium isotherm models

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