Fabrication of lanthanum-modified MOF-808 for phosphate and arsenic(V) removal from wastewater

Su, Sha; Zhang, Ru; Rao, Jiantao; Yu, Jianhua; Jiang, Xue; Wang, Shixiong; Yang, Xiangjun

doi:10.1016/j.jece.2022.108527

Cited by 37 publications

(11 citation statements)

References 60 publications

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“…Moreover, the characteristic peaks located at 834.8 and 851.6 eV in the La 3d XPS spectrum of La–Co@NPC (Figure b) correspond to the La 3d 5/2 and La 3d 3/2 orbitals of LaOCl . After As adsorption, the La 3d peaks in the spectrum of La–Co@NPC shifted to higher binding energies, which suggested that La might combine with As to form a La–O–As complex . In the O 1s XPS spectrum of Co@NPC (Figure c), there is only one characteristic peak located at 532.3 eV, which was attributable to −OH .…”

Section: Resultsmentioning

confidence: 98%

“…54 After As adsorption, the La 3d peaks in the spectrum of La−Co@NPC shifted to higher binding energies, which suggested that La might combine with As to form a La−O−As complex. 12 In the O 1s XPS spectrum of Co@NPC (Figure 5c), there is only one characteristic peak located at 532.3 eV, which was attributable to −OH. 30 The characteristic peaks of La−Co@NPC before As adsorption, namely, those at 532.9 and 529.7 eV, were attributable to the H−O−H bond 55 adsorbed on the surface of the material and the M−O bond 56 inside the La−Co@NPC (here, M represents La).…”

Section: Mechanism Of Arsenic Detoxification and S(iv)mentioning

confidence: 98%

“…Rare-earth metals have unique physical and chemical properties as well as suitable selectivity for the adsorption of harmful anions in water. , Lanthanum is a typical and inexpensive rare-earth element for which reserves are rich and has relatively strong affinity for arsenic-containing oxygen anions. − Most of the lanthanide-based adsorbents used in previous studies were produced for the adsorption of pentavalent arsenic; few studies have been conducted on the removal of trivalent arsenic, which is more toxic and more difficult to adsorb than pentavalent arsenic. The toxicity of trivalent arsenic is approximately 60 times that of pentavalent arsenic, and the oxidation kinetics underlying the conversion of As(III) into As(V) are relatively slow, which makes it highly challenging to remove trivalent arsenic from solutions.…”

Section: Introductionmentioning

confidence: 99%

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Use of La–Co@NPC for Sulfite Oxidation and Arsenic Detoxification Removal for High-Quality Sulfur Resources Recovery in Desulfurization Process

Qi,

Zhang,

et al. 2023

Environ. Sci. Technol.

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Ammonia desulfurization is a typical resource-recovery-type wet desulfurization process that is widely used in coal-fired industrial boilers. However, the sulfur recovery is limited by the low oxidation rate of byproduct (ammonium sulfite), leading to secondary SO2 pollution due to its easy decomposability. In addition, the high toxic arsenic trace substances coexisting in desulfurization liquids also reduce the quality of the final sulfate product, facing with high environmental toxicity. In this study, nitrogen-doped porous carbon coembedded with lanthanum and cobalt (La–Co@NPC) was fabricated with heterologous catalytic active sites (Co0) and adsorption sites (LaOCl) to achieve sulfite oxidation and the efficient removal of high toxic trace arsenic for the recovery of high-value ammonium sulfate from the desulfurization liquid. The La–Co@NPC/S(IV) catalytic system can generate numerous strongly oxidizing free radicals (·SO5 – and ·O2 –) for the sulfite oxidation on the Co0 site, as well as oxidative detoxification of As(III) into As(V). Subsequently, arsenic can be removed through chemical adsorption on LaOCl adsorption sites. By using the dual-functional La–Co@NPC at a concentration of 0.25 g/L, the rate of ammonium sulfite oxidation reached 0.107 mmol/L·s–1, the arsenic (1 mg/L) removal efficiency reached 92%, and the maximum adsorption capacity of As reached up to 123 mg/g. This study can give certain guiding significance to the functional material design and the coordinated control of multiple coal-fired pollutants in desulfurization for high-value recovery of sulfur resources.

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Section: Resultsmentioning

confidence: 98%

Section: Mechanism Of Arsenic Detoxification and S(iv)mentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Use of La–Co@NPC for Sulfite Oxidation and Arsenic Detoxification Removal for High-Quality Sulfur Resources Recovery in Desulfurization Process

Qi,

Zhang,

et al. 2023

Environ. Sci. Technol.

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“…Continuing this study, after three years, in 2021, the synthesis of a novel composite named δ-MnO 2 @Fe/Co-MOF-74 for As(III) uptake, with a high adsorption capacity of 300.5 mg/g, was reported by Yang et al [ 60 ]. Other MOFs, including SUM-8 [ 61 ] (with an adsorption capacity of 152.52 mg/g and an acidic pH of 2), UiO-66(Fe/Zr) [ 62 ] (with capacities of 101.73 and 204.1 mg/g for the adsorptive removal of As(III) and As(V), respectively), La-MOF-808 [ 63 ] (with adsorption capacity of 217.54 mg/g and pH of 8.32) were also synthesized for the adsorptive removal of arsenic in 2022.…”

Section: Resultsmentioning

confidence: 99%

A Brief Review of Recent Results in Arsenic Adsorption Process from Aquatic Environments by Metal-Organic Frameworks: Classification Based on Kinetics, Isotherms and Thermodynamics Behaviors

et al. 2022

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In nature, arsenic, a metalloid found in soil, is one of the most dangerous elements that can be combined with heavy metals. Industrial wastewater containing heavy metals is considered one of the most dangerous environmental pollutants, especially for microorganisms and human health. An overabundance of heavy metals primarily leads to disturbances in the fundamental reactions and synthesis of essential macromolecules in living organisms. Among these contaminants, the presence of arsenic in the aquatic environment has always been a global concern. As (V) and As (III) are the two most common oxidation states of inorganic arsenic ions. This research concentrates on the kinetics, isotherms, and thermodynamics of metal-organic frameworks (MOFs), which have been applied for arsenic ions uptake from aqueous solutions. This review provides an overview of the current capabilities and properties of MOFs used for arsenic removal, focusing on its kinetics and isotherms of adsorption, as well as its thermodynamic behavior in water and wastewater.

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“…Thus, a carrier for La species is imperative to develop La-containing phosphate adsorbent. During recent decades, many supporting materials, including clay minerals, 14 metal (hydr)oxides, 15 industrial wastes, 16 carbon-based materials, 17 inorganic-organic composites, 18 synthetic polymers, 19 and biomass, 20 were used to load La species for phosphate adsorption. However, there is still a need to develop La carriers with sustainable sources, low costs, easy preparation routes, and tunable physicochemical structures and surface functionalities.…”

Section: ■ Introductionmentioning

confidence: 99%

Thermal Air Oxidation-Mediated Synchronous Coordination and Carbonation of Lanthanum on Biochar toward Phosphorus Adsorption from Wastewater

Hu,

Liang,

Zhou

et al. 2023

Inorg. Chem.

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Biochar has attracted increasing attention as the sustainable and structure-tunable carrier for lanthanum (La) species for diverse applications. Carbonated La species possesses a higher biocompatibility and a lower leaching potential than other commonly used La species, while less attention is paid on the application of carbonated La in phosphorus (P) adsorption. Herein, thermal air oxidation (TAO) was applied as a novel strategy for synchronously tuning the coordination environment and chemical species of La on biochar surface. The results demonstrated that TAO induced the coordination of La with oxidation-generated oxygenated functional groups (OFGs) and carbonation of La species by the oxidationgenerated CO 2 on the biochar surface. The batch adsorption results showed that the Q m of resultant biochar remarkably increased from 68.92 to 132.49 mg/g at 1 g/L dosage. It also showed a robust adsorption stability in pH 2−6, a strong resistance to the co-existing Cl − , SO 4 2− , NO 3 − , CO 3 2−, or HCO 3 − , a stable adsorption recyclability, and an ultralow La leaching potential. The P adsorption was dominated by ligand exchange-induced inner-sphere complexation. In practical swine wastewater, the resultant biochar composite (1 g/L) removed 99.87% of P from 92.3 to 0.12 mg/L at a practical pH of 7.12. The density functional theory calculation further revealed the significant role of the binding of carbonated La by the biochar surface OFGs in reducing the P adsorption energies, indicating the synergism between the oxygenated biochar carrier and the carbonated La in P adsorption. Finally, this study provided a novel route to synchronously tune the coordination environment and chemical species of La on biochar via a facile TAO process for high-efficient P adsorption from wastewater.

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Fabrication of lanthanum-modified MOF-808 for phosphate and arsenic(V) removal from wastewater

Cited by 37 publications

References 60 publications

Use of La–Co@NPC for Sulfite Oxidation and Arsenic Detoxification Removal for High-Quality Sulfur Resources Recovery in Desulfurization Process

Use of La–Co@NPC for Sulfite Oxidation and Arsenic Detoxification Removal for High-Quality Sulfur Resources Recovery in Desulfurization Process

A Brief Review of Recent Results in Arsenic Adsorption Process from Aquatic Environments by Metal-Organic Frameworks: Classification Based on Kinetics, Isotherms and Thermodynamics Behaviors

Thermal Air Oxidation-Mediated Synchronous Coordination and Carbonation of Lanthanum on Biochar toward Phosphorus Adsorption from Wastewater

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