Coal bottom ash derived zeolite (SSZ-13) for the sorption of synthetic anion Alizarin Red S (ARS) dye

Gollakota, Anjani R.K.; Munagapati, Venkata Subbaiah; Volli, Vikranth; Gautam, Sneha; Wen, Jet‐Chau; Shu, Chi‐Min

doi:10.1016/j.jhazmat.2021.125925

Cited by 54 publications

(12 citation statements)

References 76 publications

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“…The inappropriate discharge of ARS into water bodies might have a negative impact on marine life. The discharge of ARS to the environment is considered as a direct threat to the ecosystem 4 , 5 .…”

Section: Introductionmentioning

confidence: 99%

Flax fiber based semicarbazide biosorbent for removal of Cr(VI) and Alizarin Red S dye from wastewater

Akl

El-Zeny

Hashem

et al. 2023

Sci Rep

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In the present study, flax fiber based semicarbazide biosorbent was prepared in two successive steps. In the first step, flax fibers were oxidized using potassium periodate (KIO4) to yield diadehyde cellulose (DAC). Dialdehyde cellulose was, then, refluxed with semicarbazide.HCl to produce the semicarbazide functionalized dialdehyde cellulose (DAC@SC). The prepared DAC@SC biosorbent was characterized using Brunauer, Emmett and Teller (BET) and N2 adsorption isotherm, point of zero charge (pHPZC), elemental analysis (C:H:N), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analyses. The DAC@SC biosorbent was applied for the removal of the hexavalent chromium (Cr(VI)) ions and the alizarin red S (ARS) anionic dye (individually and in mixture). Experimental variables such as temperature, pH, and concentrations were optimized in detail. The monolayer adsorption capacities from the Langmuir isotherm model were 97.4 mg/g and 18.84 for Cr(VI) and ARS, respectively. The adsorption kinetics of DAC@SC indicated that the adsorption process fit PSO kinetic model. The obtained negative values of ΔG and ΔH indicated that the adsorption of Cr(VI) and ARS onto DAC@SC is a spontaneous and exothermic process. The DAC@SC biocomposite was successfully applied for the removal of Cr(VI) and ARS from synthetic effluents and real wastewater samples with a recovery (R, %) more than 90%. The prepared DAC@SC was regenerated using 0.1 M K2CO3 eluent. The plausible adsorption mechanism of Cr(VI) and ARS onto the surface of DAC@SC biocomposite was elucidated.

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Section: Introductionmentioning

confidence: 99%

Flax fiber based semicarbazide biosorbent for removal of Cr(VI) and Alizarin Red S dye from wastewater

Akl

El-Zeny

Hashem

et al. 2023

Sci Rep

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“…The adsorbent capacity, which is the quantity of adsorbate absorbed by the adsorbent per unit mass or volume of the adsorbent, can be influenced by several factors. pH, dosage, agitation speed, time, temperature, particle size, surface area, and micropore volume of the adsorbent are the parameters that affect the absorbent capacity. − In addition, different properties of different metal ions, such as their ionic radius, charge, and electronegativity, change the adsorbent capacity of each metal ion in the same material. , Therefore, the adsorption capacity for each metal ion is different and can be listed as Nd > Fe > Pr > Dy in these conditions.…”

Section: Resultsmentioning

confidence: 99%

Development of a Near-Zero-Waste Valorization Concept for Waste NdFeB Magnets: Production of Antimicrobial Fe Alginate Beads via Adsorption and Recovery of High-Purity Rare-Earth Elements

Emil-Kaya,

Uysal,

Dikmetas

et al. 2024

ACS Omega

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Nowadays, with the evolution of technology, rare earths are raw materials for a multitude of products, especially in high technological applications. A high amount of REEs is used in the production of permanent magnets, particularly NdFeB. The demand for some of the REEs, including neodymium, praseodymium, and dysprosium, is expected to increase in the coming years. REEs are defined as critical materials due to their high supply risk and economic importance. Recycling secondary raw materials for supplying REEs in the future is one promising option, and one of the best candidates is NdFeB magnets. NdFeB magnets include approximately 30% REEs and 66% of iron. For the near-zero-waste concept, the recovered iron from NdFeB must be evaluated in other applications. In this study, the near-zero-waste valorization concept for EoL-NdFeB magnets is developed, and high-purity REEs are achieved with a two-step process, including leaching and adsorption using alginate beads. Moreover, antimicrobial Fe alginate beads are produced in the leach liquor via adsorption. The antimicrobial activity of the produced Fe alginate beads is evaluated with disc diffusion and broth dilution methods against Grampositive Staphylococcus aureus and Gram-negative Escherichia coli. The most effective antibacterial Fe alginate beads are against E. coli and S. aureus with inhibitions of 87.21 and 56.25%, respectively.

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“…The peaks at 550, 795, 800, and 1100 cm −1 in the six samples are indicative of T‐O‐T (T = Si or Al) bending vibrations, symmetric telescopic vibration of T‐O, and Si‐O‐Si telescopic vibration and bending vibration, respectively, which are basically the same as those of the common ZSM‐5 molecular sieves. [ 19–22 ]…”

Section: Resultsmentioning

confidence: 99%

Fe‐La‐Ce‐ZSM‐5 Zeolite for Adsorbing Congo Red

Yang,

Cai,

2024

Physica Status Solidi (a)

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In this experiment, ZSM‐5 molecular sieves are prepared by hydrothermal synthesis and modified by impregnation with Fe, La, and Ce loading. X‐ray diffraction, X‐ray photon‐electron spectroscopy, and scanning electron microscopy show that Fe, La, and Ce elements are successfully loaded onto the surface of the material, and the surface area of Fe‐La‐Ce‐ZSM‐5 is 241.66 m2 g−1. A systematic study on the adsorption of Congo red solution is carried out using Fe‐La‐Ce‐ZSM‐5 molecular sieves and it is found through the adsorption data that the adsorption process is more in line with Langmuir and the proposed second‐order kinetic model, and the theoretical saturated adsorption capacity is 2669.19 mg g−1. The adsorption process is recycled four times and still has more than 60 % removal performance for high‐concentration Congo red solution. The results of this experiment show that Fe‐La‐Ce‐ZSM‐5 molecular sieves show excellent removal performance for Congo red dye in wastewater.

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Coal bottom ash derived zeolite (SSZ-13) for the sorption of synthetic anion Alizarin Red S (ARS) dye

Cited by 54 publications

References 76 publications

Flax fiber based semicarbazide biosorbent for removal of Cr(VI) and Alizarin Red S dye from wastewater

Flax fiber based semicarbazide biosorbent for removal of Cr(VI) and Alizarin Red S dye from wastewater

Development of a Near-Zero-Waste Valorization Concept for Waste NdFeB Magnets: Production of Antimicrobial Fe Alginate Beads via Adsorption and Recovery of High-Purity Rare-Earth Elements

Fe‐La‐Ce‐ZSM‐5 Zeolite for Adsorbing Congo Red

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