Aluminum-fumarate based MOF: A promising environmentally friendly adsorbent for the removal of phosphate

Moumen, Elmehdi; Bazzi, Loubna; Hankari, Samir El

doi:10.1016/j.psep.2022.02.034

Cited by 36 publications

(13 citation statements)

References 66 publications

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“…The La 3d (Figure 6a) and Al 2p (Figure 6b) peaks were shifted to higher binding energy after phosphate adsorption, whereas the Fe 2p (Figure 6c) peaks of LFAO-3 remained the same after phosphate adsorption, which indicated that La 3+ plays a major role in the adsorption of phosphate and Al 3+ contributes to the adsorption of phosphate. 23,60 This is possible as La 3+ exhibits better alkalinity than Fe 3+ and Al 3+ , resulting in the preferential binding of La 3+ to phosphate; similar results appear in phosphate-modified LaFeO 3 . 61 The O ads /O lat values before and after adsorption were 1.33 and 1.90 (Figure 6d), respectively, indicating that lattice oxygen is involved in the reaction as an active site.…”

Section: Mechanistic Aspectsmentioning

confidence: 86%

“…However, the relationship between the changes caused by doping metals to perovskite oxide and promoting the phosphate adsorption of such materials is rarely studied . LaFeO 3 oxide is a type of perovskite (CaTiO 3 ), and compared with other materials (metal oxide, MOF, LDH), the perovskite has the advantage of flexible regulation. − A comparison of phosphate adsorption capacity in various solid materials is given in Table S1. LaFeO 3 is widely used in catalysis, fuel cells, adsorption, and other fields due to its remarkable physical properties. − In the orthorhombic unit cell of LaFeO 3 , the Fe 3+ ion lies at the center of the octahedron formed by six O 2– ions, while the La 3+ ion occupies the space between the FeO 6 octahedra. , Due to the limited adsorption capacity of pure LaFeO 3 for phosphate, it is an effective method to consider the substitution of La or Fe by cations with different valence states.…”

Section: Introductionmentioning

confidence: 99%

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Green and Efficient Al-Doped LaFe_xAl_1–xO₃ Perovskite Oxide for Enhanced Phosphate Adsorption with Creation of Oxygen Vacancies

Feng

Guo

et al. 2023

ACS Appl. Mater. Interfaces

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La-based metal oxide materials are environmentally friendly and show promise for phosphate adsorption. A series of Al-doped perovskite oxides, such as LaFe x Al 1−x O 3 , were prepared using a facile citric acid-assisted sol−gel method. The characterization results demonstrated that with optimized Al doping, there was a significant increase in the specific surface area and increased defect content of perovskite oxide LaFe x Al 1−x O 3 . Adsorption experiments showed that the performance of phosphate removal by LaFe x Al 1−x O 3 was largely enhanced due to the improved adsorption capacity, which is maximum eight times higher compared with control perovskites prepared under neutral conditions. The mass transfer rate for adsorption was considerably boosted with phosphate removal within the initial 15 min. Spectroscopy analysis and density functional theory calculation results showed that the process of phosphate removal by the Al-doped perovskite oxides LaFe x Al 1−x O 3 involved electrostatic interactions, an inner-sphere complex, and surface oxygen vacancies, among which the creation of oxygen vacancies caused by the Al doping was the predominant mechanism for reducing the bonding barrier during adsorption and generating adsorption sites. The results enable the development of a green and efficient perovskite adsorbent with a La-based perovskite material for phosphorus removal.

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Section: Mechanistic Aspectsmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Green and Efficient Al-Doped LaFe_xAl_1–xO₃ Perovskite Oxide for Enhanced Phosphate Adsorption with Creation of Oxygen Vacancies

Feng

Guo

et al. 2023

ACS Appl. Mater. Interfaces

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“…Eutrophication caused by algal overgrowth can deplete water self-cleaning capacity, cause damage on water systems and lower water quality. 3,4 Dyes, which are among the most harmful pollutants, are widely found in the wastewater of different industries, including textile processing, 5,6 paper, leather tanning, cosmetics, and pharmaceuticals. Dyes are classed as cationic, anionic, or non-ionic based on the charge of their dissolved particles in an aqueous media.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Direct Orange 46 and phosphate ions on waste tomato stem ash used as a bio‐based adsorbent

Eskikaya

Arslan

Gün

et al. 2023

Env Prog and Sustain Energy

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It is necessary to use adsorbents derived from natural materials, such as biosorbents since they do not any damage to the environment, for pollutants elimination that contaminate the aquatic environment. Since the deficiency in the literature was determined in the study in which only the adsorbent obtained from tomato stem was used before this study, a waste material with tomato stem was selected as a natural adsorbent without chemical compounds. Phosphate and dye contaminants, which are often present in industrial and municipal wastewater, were eliminated by adsorption process. Fourier transform infrared (FTIR), x‐ray fluorescence (XRF), Zeta potential, and scanning electron microscope (SEM) with energy dispersive x‐ray (EDX) spectroscopy were used to analyze tomato stems. The tomato stems resulted in high pollutants removal efficiencies recording 99.31% of phosphate () removal efficiency and 99.44% of Direct Orange 46 (DO 46) dye removal efficiency at optimal conditions. The best conditions for phosphate adsorption were pH = 6.0, 2.0 g/L of tomato stems concentration, 50 mg/L initial phosphate concentration and a contact time of 120 min resulting in an adsorption capacity of 4.24 mg/g. The best conditions for DO 46 adsorption were pH = 12, 2.0 g/L of adsorbent concentration, initial dye of 200 mg/L concentration and a contact time of 120 min (q = 13.76 mg/g). For both adsorption experiments, the adsorbent size was chosen to be less than 500 μm. As a result of the adsorption experiments on tomato stem ash, Freundlich isotherm (R2: 0.94) was suitable for DO 46 dye adsorption and Temkin isotherm (R2: 0.99) was suitable for elimination. The phosphate (R2: 0.97) and dye (R2: 1) adsorption onto tomato stem ash was explained using a pseudo‐second‐order kinetic model. It has been determined that the adsorption of the DO 46 dye with the tomato stem ash is an exothermic (∆H: −3.174) process that occurs naturally due to its nature (∆G: −8.41). On the other hand, it was determined that the adsorption of was spontaneous (∆G: −5.21) and endothermic (∆H: 5.7357). According to the adsorption results obtained in this study, it is appropriate to use the tomato stem, which is generated as waste, as an adsorbent. It is thought that obtaining from bio‐based waste in the removal of pollutants such as dye and phosphate in water will both reduce the cost and create an advantage in terms of biodegradability.

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“…Currently, phosphate recycling methods include chemical precipitation [ 4 ], adsorption [ 5 ], biological treatment [ 6 ], electrodialysis [ 7 ], and so on [ 8 ]. Among these methods, adsorption is widely used due to its simple operation.…”

Section: Introductionmentioning

confidence: 99%

Efficiency Recycling and Utilization of Phosphate from Wastewater Using LDHs-Modified Biochar

Ding

Long

Zeng

et al. 2023

IJERPH

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The excessive application of phosphate fertilizers easily causes water eutrophication. Phosphorus recovery by adsorption is regarded as an effective and simple intervention to control water bodies’ eutrophication. In this work, a series of new adsorbents, layered double hydroxides (LDHs)-modified biochar (BC) with different molar ratios of Mg2+ and Fe3+, were synthesized based on waste jute stalk and used for recycling phosphate from wastewater. The prepared LDHs-BC4 (the molar ratio of Mg/Fe is 4:1) has significantly high adsorption performance, and the recovery rate of phosphate is about 10 times higher than that of the pristine jute stalk BC. The maximum adsorption capacity of LDHs-BC4 for phosphate was 10.64 mg-P/g. The main mechanism of phosphate adsorption mainly includes electrostatic attraction, ion exchange, ligand exchange, and intragranular diffusion. Moreover, the phosphate-adsorbed LDHs-BC4 could promote mung bean growth, which indicated the recovery phosphate from wastewater could be used as a fertilizer.

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Aluminum-fumarate based MOF: A promising environmentally friendly adsorbent for the removal of phosphate

Cited by 36 publications

References 66 publications

Green and Efficient Al-Doped LaFe_xAl_1–xO₃ Perovskite Oxide for Enhanced Phosphate Adsorption with Creation of Oxygen Vacancies

Green and Efficient Al-Doped LaFe_xAl_1–xO₃ Perovskite Oxide for Enhanced Phosphate Adsorption with Creation of Oxygen Vacancies

Adsorption of Direct Orange 46 and phosphate ions on waste tomato stem ash used as a bio‐based adsorbent

Efficiency Recycling and Utilization of Phosphate from Wastewater Using LDHs-Modified Biochar

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Aluminum-fumarate based MOF: A promising environmentally friendly adsorbent for the removal of phosphate

Cited by 36 publications

References 66 publications

Green and Efficient Al-Doped LaFexAl1–xO3 Perovskite Oxide for Enhanced Phosphate Adsorption with Creation of Oxygen Vacancies

Green and Efficient Al-Doped LaFexAl1–xO3 Perovskite Oxide for Enhanced Phosphate Adsorption with Creation of Oxygen Vacancies

Adsorption of Direct Orange 46 and phosphate ions on waste tomato stem ash used as a bio‐based adsorbent

Efficiency Recycling and Utilization of Phosphate from Wastewater Using LDHs-Modified Biochar

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Product

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Green and Efficient Al-Doped LaFe_xAl_1–xO₃ Perovskite Oxide for Enhanced Phosphate Adsorption with Creation of Oxygen Vacancies

Green and Efficient Al-Doped LaFe_xAl_1–xO₃ Perovskite Oxide for Enhanced Phosphate Adsorption with Creation of Oxygen Vacancies