Optimization and Experimental Design of the Pb2+ Adsorption Process on a Nano-Fe3O4-Based Adsorbent Using the Response Surface Methodology

Singh, Rimmy; Bhateria, Rachna

doi:10.1021/acsomega.0c04284

Cited by 68 publications

(36 citation statements)

References 72 publications

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“…The results showed that the value of noise ratio of the model are in the desirable range (0.987). Similar statistical results for optimization of metal adsorption was reported in a research work by Singh and Bhateria (2020).…”

Section: Validation Of the Models For Optimizationsupporting

confidence: 87%

“…adjusted R 2 (0.9919-0.9986), is in good agreement with the predicted R 2 (0.9966-0.9996) as shown in table 8, 9 signifying less variation between the predicted and actual values Adetokun et al (2019). The results con irmed the adequacy of the selected quadratic model Singh and Bhateria (2020).…”

Section: Continued On Next Pagesupporting

confidence: 75%

“…The functional groups present in the adsorbents (TCP, FS and MFC) were obtained using Shimadzu 8400S FTIR spectrometer operating on Platinum-Attenuated Total Re lectance (ATR) method. The samples were mounted on a diamond crystal disc and recorded with 20 scans in the frequency range of 4000 -400 cm −1 with a resolution of 2 cm −1 Adebowale et al (2006), Singh and Bhateria (2020).…”

Section: Characterization Of Adsorbentsmentioning

confidence: 99%

“…In this experimental study, the central composite design (CCD) method was applied to design experiments as presented in Table 5 , propose empirical models, investigate the interaction effects of four factors (adsorption parameters) and determine the optimum values for the studied operating variables (pH, initial metal concentration, adsorbent dose and contact time) to achieve the maximum response (adsorption ef iciency of Pb (II) and Cr (VI) in aqueous solution (Yazdani et al, 2013;Singh and Bhateria (2020).…”

Section: Model Development For Optimization Of Pb (Ii and Cr (Vi Adsorptionmentioning

confidence: 99%

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OPTIMIZATION OF ADSORPTION OF Pb (II) AND Cr (VI) FROM AQUEOUS SOLUTION USING MODIFIED FELDSPAR COMPOSITE: ISOTHERM AND KINETIC STUDIES

Sanusi

Yahaya

Ambrusa

et al. 2021

Int. J. Eng. Sci. Tech

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In this study modified feldspar composite (MFC) adsorbent based on feldspar and Theobroma cacao podas (TCP) was prepared, characterized and utilized for adsorption of Pb (II) and Cr (VI) in aqueous solution. The results showed that the cation exchange capacity of the modified feldspar composite (30.66 ± 0.21 meq/100 g) was 5 times higher than that of raw feldspar (6.42 ± 0.45 meq/100g). More so, the novel biohybrid material, MFC has a surface area of 53.60 ± 0.3 m2/g and particle size of 105.4 ± 0.18. X-ray diffraction peaks revealed that after the modification process, there is only slight shift in the position of some diffraction peaks of feldspar and the composite material suggestive of the retention of the crystalline properties of the feldspar in the novel composite (MFC). Infrared spectroscopy (FTIR) spectra showed that some functional groups present in the two starting materials were also available on the surface of the composite (MFC) indicating that the intercalation of TCP biomass into feldspar surface was successful. Response surface methodology (RSM) via a five-levels central composite design (CCD) was applied for optimization of metal adsorption onto the adsorbent in 32 experiment runs considering the effect of pH, adsorbent dose, adsorbate concentration and contact time. Optimization results showed that the predicted and experimental values of Pb (14.021, 14.148 mg/g) and Cr (3.428, 3.504 mg/g) were close at the optimum condition of (pH 2, 5, 6; 0.5 g; 100 mg/L; 60-120 min and 3000K). Results of ANOVA analysis revealed the adequacy of the model with the good correlation between R2 values (0.9916-0.9998) and adjusted R2 (0.9919-0.9986) and F value of (≥ 147). Results showed that Pb (II) ions adsorption onto the adsorbents was well fitted to the Langmuir isotherm model while the Cr (VI) ions uptake onto FS and MFC adsorbents followed Freundlich isotherm model. The results of the kinetic studies showed that rate of Pb (II) removal followed pseudo second order model while the rate of adsorption of Cr (VI) onto the FS and MFC adsorbents best fitted pseudo first order model. Owing to its improved cation exchange capacity and eco-friendliness, the modified feldspar composite have a good potential application in wastewater treatment besides other industrial explorations.

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Section: Validation Of the Models For Optimizationsupporting

confidence: 87%

Section: Continued On Next Pagesupporting

confidence: 75%

Section: Characterization Of Adsorbentsmentioning

confidence: 99%

Section: Model Development For Optimization Of Pb (Ii and Cr (Vi Adsorptionmentioning

confidence: 99%

See 2 more Smart Citations

OPTIMIZATION OF ADSORPTION OF Pb (II) AND Cr (VI) FROM AQUEOUS SOLUTION USING MODIFIED FELDSPAR COMPOSITE: ISOTHERM AND KINETIC STUDIES

Sanusi

Yahaya

Ambrusa

et al. 2021

Int. J. Eng. Sci. Tech

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“…The experimental design was subsequently executed via the RSM-coupled BBD to establish the synergistic or antagonistic effects of three or more variables on the efficiency of the nanocomposite material for CV removal [39]. The entire design mainly consisted of four parameters as contact time (A), pH of CV solution (B), CV concentration (C) and adsorbent dose (D).…”

Section: Experiments Design and Adsorption Experimentsmentioning

confidence: 99%

L-Ascorbic Acid-g-Polyaniline Mesoporous Silica Nanocomposite for Efficient Removal of Crystal Violet: A Batch and Fixed Bed Breakthrough Studies

et al. 2020

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In the present study, mesoporous silica nanoparticles (MSNs) synthesized through sol–gel process and calcined at 600 °C were further surface functionalized by a copolymer chain of L-ascorbic acid (AS) and polyaniline (PAni) by in situ free radical oxidative polymerization reaction. The surface modification of MSNs by AS-g-PAni was confirmed by using various analytical techniques, namely FTIR, XRD, SEM–EDX, TEM and AFM. The composition of AS-g-PAni@MS was found to be composed of C (52.53%), N (20.30%), O (25.69%) and Si (1.49%), with 26.42 nm as the particle size. Further, it was applied for the adsorption of crystal violet (CV) dye under batch, as well as fixed bed method. RSM–BBD was taken into consideration, to optimize the various operational parameters effecting the adsorption through batch method. To explore maximum efficiency of the material, it was further subjected to adsorption of CV under fixed bed method, using the variable bed heights of 3.7, 5.4 and 8.1 cm. Based on high value of regression coefficient (R2) and low value of RMSE given as (0.99, 0.02) for 3.7 cm, (0.99, 0.03), the breakthrough data were very well defined by the Thomas model, with optimum concurrence of stoichiometric adsorption capacity values. The external mass transfer equilibrium data were well fitted by the Langmuir model, with maximum monolayer adsorption capacity of 88.42 mg g−1 at 303 K, 92.51 mg g−1 at 313 K, 107.41 mg g−1 at 313 K and 113.25 mg g−1 at 333 K. The uptake of CV by AS-g-PAni@MS was well defined by pseudo second order model with rate constant K2 = 0.003 L mg–1 min–1 for 50 and 0.003 L mg–1 min–1 for 60 mg L–1 CV. The adsorption reaction was endothermic with enthalpy (ΔH) value of 3.62 KJ mol−1 and highly efficient for treatment of CV-contaminated water for more the five consecutive cycles.

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Optimization of Rhizoclonium hieroglyphicum extract for enhanced synthesis of nickel oxide nanoparticles using response surface methodology and its potential exploration in biological application

Swathilakshmi,

Geethamala,

Aldawood

et al. 2024

Luminescence

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The study investigates the potential of Rhizoclonium hieroglyphicum as a novel source for synthesizing nickel oxide nanoparticles (RH‐NiONPs) and evaluates its biological applications. Phytochemicals in the algal extract serve as capping, reducing and stabilizing agent for nickel oxide nanoparticles. The process variables were optimized using BBD based RSM to obtain maximum RH‐NiONPs. Characterization of RH‐NiONPs using UV–Vis and FT‐IR spectroscopy reveals the plasmon resonance peak at 340 nm and the functional groups responsible for reduction and stabilization. XRD confirmed the crystalline nature while the stability and size of the RH‐NiONPs were determined by DLS and zeta potential. Toxicity assessments demonstrated the effect of RH‐NiONPs against Vigna radiata, Allium cepa and Artemia salina was low. RH‐NiONPs revealed significant zone of inhibition against the selected bacteria and fungi. The results of larvicidal activity showed that RH‐NiONPs are toxic to 4th instar larvae of Daphnis nerii. Also, RH‐NiONPs efficiently decolorized Reactive Violet 13 (92%) under sunlight irradiation and the experimental data well fits to Langmuir isotherm along with pseudo second order kinetic model. The thermodynamic studies enunciate the exothermic and non‐spontaneous photocatalytic decolorization of reactive violet 13. Thus, the current study assesses the eco‐friendly and cost‐effective nature of RH‐NiONPs along with its biological applications.

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Optimization and Experimental Design of the Pb²⁺ Adsorption Process on a Nano-Fe₃O₄-Based Adsorbent Using the Response Surface Methodology

Cited by 68 publications

References 72 publications

OPTIMIZATION OF ADSORPTION OF Pb (II) AND Cr (VI) FROM AQUEOUS SOLUTION USING MODIFIED FELDSPAR COMPOSITE: ISOTHERM AND KINETIC STUDIES

OPTIMIZATION OF ADSORPTION OF Pb (II) AND Cr (VI) FROM AQUEOUS SOLUTION USING MODIFIED FELDSPAR COMPOSITE: ISOTHERM AND KINETIC STUDIES

L-Ascorbic Acid-g-Polyaniline Mesoporous Silica Nanocomposite for Efficient Removal of Crystal Violet: A Batch and Fixed Bed Breakthrough Studies

Optimization of Rhizoclonium hieroglyphicum extract for enhanced synthesis of nickel oxide nanoparticles using response surface methodology and its potential exploration in biological application

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