Utilization of red mud waste into mesoporous ZSM-5 for methylene blue adsorption-desorption studies

Tehubijuluw, Hellna; Subagyo, Riki; Yulita, Maulil Fatma; Nugraha, Reva Edra; Kusumawati, Yuly; Bahruji, Hasliza; Jalil, Aishah Abdul; Hartati, Hartati; Prasetyoko, Didik

doi:10.1007/s11356-021-13285-y

Cited by 41 publications

(21 citation statements)

References 72 publications

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“…The amount of adsorbate at equilibrium, at a particular time and MB removal efficiency, were calculated using the equations (1-3), respectively (Tehubijuluw et al, 2021).…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Biochar Derived from Sesbania sesban Plant as a Potential Low-Cost Adsorbent for Removal of Methylene Blue

Hiep¹,

Thu²,

Quyen³

et al. 2022

Environ. Nat. Resour. J.

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In this study, biochar made from the Sesbania sesban plant, under slow pyrolysis at 300°C was used to adsorb methylene blue (MB) in aqueous solution. The biochar properties were clarified by diverse analytical methods such as FTIR, SEM, and BET. The results indicated that the surface of biochar was relatively smooth, had porous texture, and stacked evenly. In addition, the biochar had a large specific surface area of 561.8 m2/g and the pHpzc value was 6.9. The effect of adsorbent dosage, initial pH, contact time, and concentration of dye solution on biochar were investigated. The optimum conditions for MB adsorption were found at the MB concentration of 50 mg/L, initial pH of 11, biochar mass of 0.6 mg, and contact time of 30 min. Under these optimal conditions, MB dye removal efficiency was above 90%. Adsorption isotherm data were fitted with the Langmuir isotherm model (R2=0.897) suggesting the adsorption was monolayer, and its maximum adsorption capacity was about 6.6 mg/g. The adsorption kinetic models showed that the linear pseudo-second-order by R2=0.999 was well fitted. The results indicated the enormous potential of Sesbania sesban plant to produce biochar as a low-cost and rather high-effective adsorbent for dye removal from wastewater as well as water quality improvement.

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“…The amount of adsorbate at equilibrium, at a particular time and MB removal efficiency, were calculated using the equations (1-3), respectively (Tehubijuluw et al, 2021).…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Biochar Derived from Sesbania sesban Plant as a Potential Low-Cost Adsorbent for Removal of Methylene Blue

Hiep¹,

Thu²,

Quyen³

et al. 2022

Environ. Nat. Resour. J.

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“…As reported by Shams-Ghahfarokhi and Nezamzadeh-Ejhieh [24], due to its sufficiently high hydrophobicity, ZSM-5 adsorbs more dye molecules on its surface, where hydroxyl radicals are generated in the photocatalytic processes, thus increasing the photocatalytic activity of the semiconductor. Additionally, ZSM-5 can be obtained from the conversion of RM owing to its high contents of alumina and silica, as reported in our previous study [25].…”

Section: Introductionmentioning

confidence: 61%

The impregnation of ZnO onto ZSM-5 derived from red mud for photocatalytic degradation of methylene blue

Tehubijuluw

Subagyo

Kusumawati

et al. 2022

Sustain Environ Res

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Photocatalytic degradation of Methylene Blue (MB) by zinc oxide/zeolite socony mobile-5 (ZnO/ZSM-5) composites was investigated. The ZSM-5 material was synthesized from red mud by a two-step hydrothermal method to which ZnO loadings at different mass ratios were subsequently performed. Characterizations using X-ray diffraction (XRD), Fourier transform infrared spectroscopy, and scanning electron microscopy were carried out to identify the formation of ZSM-5 and ZnO/ZSM-5. ZSM-5 and ZnO/ZSM-5 have cubic microcrystallite morphologies. ZnO loading in the ZnO/ZSM-5 composites was successfully performed and confirmed by the appearance of wurtzite peaks in the XRD spectra that matched the Joint Committee on Powder Diffraction Standards data. The presence of ZnO in ZSM-5 leading resulted in a decrease in the surface area and pore size as confirming by nitrogen adsorption-desorption isotherm experiments. The band gap of the samples was measured using UV-Vis diffuse reflectance spectroscopy. The optimum photocatalytic degradation of MB was observed at a ZnO loading of 34% w/w dubbed 34-ZnO/ZSM-5. The influence of the initial concentration of MB was also investigated at 80, 90, and 100 mg L− 1 using 34-ZnO/ZSM-5 and ZSM-5. Liquid chromatography–mass spectrometry characterization was performed to analyze the degradation products.

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“…When we compare RB and MB dyes, the higher degree of RB removal in the presence of NH 4 ZSM-5 zeolite can be explained by the greater possibilities of binding to the outer zeolite surface because at pH > 3, RB dye behaves both as a weak base and as a weak acid. The high degree of MB dye removal in the presence of NH 4 BETA and NaY zeolites can be explained by the smaller dimensions of the MB molecules, which, in addition to binding to the outer surface, are most probably also bound to the active centers of the inner zeolite surface [ 17 , 49 , 59 ].…”

Section: Resultsmentioning

confidence: 99%

Zeolites as Adsorbents and Photocatalysts for Removal of Dyes from the Aqueous Environment

et al. 2022

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This study investigated the potential of zeolites (NH4BETA, NH4ZSM-5, and NaY) to remove two frequently used dyes, methylene blue (MB) and rhodamine B (RB), from an aqueous environment. The removal of dyes with zeolites was performed via two mechanisms: adsorption and photocatalysis. Removal of dyes through adsorption was achieved by studying the Freundlich adsorption isotherms, while photocatalytic removal of dyes was performed under UV irradiation. In both cases, the removal experiments were conducted for 180 min at two temperatures (283 K and 293 K), and dye concentrations were determined spectrophotometrically. Additionally, after photodegradation, mineralization was analyzed as chemical oxygen demand. A computational analysis of the structures of MB and RB was performed to gain a deeper understanding of the obtained results. The computational analysis encompassed density functional theory (DFT) calculations and analysis of two quantum-molecular descriptors addressing the local reactivity of molecules. Experimental results have indicated that the considered zeolites effectively remove both dyes through both mechanisms, especially NH4BETA and NH4ZSM-5, due to the presence of active acidic centers on the outer and inner surfaces of the zeolite. The lowest efficiency of dye removal was achieved in the presence of NaY zeolite, which has a lower SiO2/Al2O3 ratio. A more efficient reduction was completed for RB dye, which agrees with the computationally obtained information about reactivity.

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Utilization of red mud waste into mesoporous ZSM-5 for methylene blue adsorption-desorption studies

Cited by 41 publications

References 72 publications

Biochar Derived from Sesbania sesban Plant as a Potential Low-Cost Adsorbent for Removal of Methylene Blue

Biochar Derived from Sesbania sesban Plant as a Potential Low-Cost Adsorbent for Removal of Methylene Blue

The impregnation of ZnO onto ZSM-5 derived from red mud for photocatalytic degradation of methylene blue

Zeolites as Adsorbents and Photocatalysts for Removal of Dyes from the Aqueous Environment

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