Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles

Lou, Xiang-Yang; Boada, Roberto; Verdugo, Verónica; Simonelli, Laura; Pérez, G.; Valiente, Manuel

doi:10.1016/j.jes.2021.09.001

Cited by 14 publications

(7 citation statements)

References 36 publications

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“…Therefore, iron oxides are stronger adsorbents for As(III) and As(V) than clay minerals, controlling As bioavailability in iron oxide-rich acidic soils [ 36 , 44 , 45 ]. The large adsorption capacity of iron oxides for As is attributed to their high specific surface area and abundant active sites [ 23 , 46 ]. The iron plaque formed on the surface of rice roots is another important mechanism by which iron oxides protect rice plants from As toxicity [ 37 ].…”

Section: Discussionmentioning

confidence: 99%

Key factors influencing arsenic phytotoxicity thresholds in south China acidic soils

Ding,

Wang,

Liu

et al. 2023

Heliyon

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Section: Discussionmentioning

confidence: 99%

Key factors influencing arsenic phytotoxicity thresholds in south China acidic soils

Ding,

Wang,

Liu

et al. 2023

Heliyon

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“…Iron oxide materials have been intensively studied in recent decades because of their properties to be used in fields like catalysis, biomedical applications, gas sensing materials, electromagnetism, and water purification [ 71 ]. Some materials can adsorb contaminants in water, such as heavy metal ions, organic compounds, and other contaminants like arsenic and boron [ 72 ]. However, the applications of iron oxides strongly depend on the type of oxide and the stability of the particles under specific conditions.…”

Section: Inorganic Adsorbents For Boron Removalmentioning

confidence: 99%

“…Among all, coprecipitation is currently the most widely used method, and its main advantage is that a single synthesis can produce large quantities of products, and the reaction time is short, which is suitable for large-scale industrial production. However, it is still a challenge to regulate particle size and avoid agglomeration [ 72 ]. Another approach proposed by Glasgow et al [ 75 ] is the synthesis of crystalline and uniform Fe 3 O 4 through the thermal decomposition of iron precursors in a continuous flow method.…”

Section: Inorganic Adsorbents For Boron Removalmentioning

confidence: 99%

“…γ-Fe 2 O 3 has been studied for boron adsorption, demonstrating peak adsorption capacity at pH levels ranging from 8 to 9. On the other hand, Fe 3 O 4 possesses strong magnetic characteristics, enabling straightforward separation from the reaction medium after adsorption via a simple magnet [ 72 ]. Demetriou et al [ 52 ] studied boron adsorption using iron(III) oxide hydroxide (Fe(O)OH).…”

Section: Inorganic Adsorbents For Boron Removalmentioning

confidence: 99%

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Effective Removal of Boron from Aqueous Solutions by Inorganic Adsorbents: A Review

Lou,

Yohai,

Boada

et al. 2023

Molecules

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Increasing levels of boron in water exceeding acceptable thresholds have triggered concerns regarding environmental pollution and adverse health effects. In response, significant efforts are being made to develop new adsorbents for the removal of boron from contaminated water. Among the various materials proposed, inorganic adsorbents have emerged as promising materials due to their chemical, thermal, and mechanical stability. This review aims to comprehensively examine recent advances made in the development of inorganic adsorbents for the efficient removal of boron from water. Firstly, the adsorption performance of the most used adsorbents, such as magnesium, iron, aluminum, and individual and mixed oxides, are summarized. Subsequently, diverse functionalization methods aimed at enhancing boron adsorption capacity and selectivity are carefully analyzed. Lastly, challenges and future perspectives in this field are highlighted to guide the development of innovative high-performance adsorbents and adsorption systems, ultimately leading to a reduction in boron pollution.

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“…A new type of Fe-based adsorbent processed into an easy-to-use shape has also been proposed. Lou et al [26] reported the removal of As(V) using sponges loaded with Fe-based adsorbents. They were synthesized a composite material cube-shaped open-celled cellulose sponge loaded superparamagnetic iron oxide nanoparticles (SPION).…”

Section: Introductionmentioning

confidence: 99%

Removal of Arsenate from Contaminated Water via Combined Addition of Magnesium-Based and Calcium-Based Adsorbents

et al. 2023

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The effects of the combined addition of Mg- and Ca-based adsorbents (MgO, Mg(OH)2, MgCO3, CaO, Ca(OH)2, and CaCO3) were systematically tested for improving arsenic-removal performance and inhibiting the leaching of base material components from the adsorbent. Arsenic-removal tests were conducted with each single type or combination of two types of adsorbents. Results obtained after the combined-addition tests were compared with those obtained from the single-addition test with each adsorbent. The arsenic-removal performance improved in most combined additions but decreased in certain combined additions of MgO or Mg(OH)2 with Ca-based adsorbents. The arsenic-removal performance of the combined addition of MgCO3 and Ca(OH)2 was the highest. The combination of Mg-based adsorbents with CaO or Ca(OH)2 inhibited Mg-leaching, whereas that of CaO or Ca(OH)2 with MgCO3 inhibited Ca-leaching. Improvement in arsenic-removal performance for the combination of MgCO3 with CaO or Ca(OH)2 was caused by the incorporation and co-precipitation with arsenic when Mg(OH)2 and CaCO3 were produced. MgCO3-Ca(OH)2 and MgCO3-CaO are recommended for both arsenic removal and environmental adsorbent stability that can be effectively applied over a wide range of arsenic concentrations.

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Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles

Cited by 14 publications

References 36 publications

Key factors influencing arsenic phytotoxicity thresholds in south China acidic soils

Key factors influencing arsenic phytotoxicity thresholds in south China acidic soils

Effective Removal of Boron from Aqueous Solutions by Inorganic Adsorbents: A Review

Removal of Arsenate from Contaminated Water via Combined Addition of Magnesium-Based and Calcium-Based Adsorbents

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