Co-adsorption of As(III) and phenanthrene by schwertmannite and Fenton-like regeneration of spent schwertmannite to realize phenanthrene degradation and As(III) oxidation

Meng, Xianghe; Wang, Xiaomeng; Zhang, Chun-Mei; Su, Yan; Zheng, Guanyu; Zhou, Lixiang

doi:10.1016/j.envres.2021.110855

Cited by 33 publications

(4 citation statements)

References 46 publications

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“…6a). The synthesized Sch displayed a typical structure of sea urchin-like aggregates with a mean diameter of approximately 1 µm, which was consistent with previous literature (Meng et al, 2021;Wang et al, 2020). After embedding with ferrous ions, Fe(II)@Sch exhibited a similar morphology to Sch but with a smaller particle size of approximately 500 nm diameter.…”

Section: Morphological and Structural Characterizationsupporting

confidence: 89%

Synthesis, Characterization and Application of Ferrous Iron-Embedded Schwertmannite for Cr(VI) Reduction–Adsorption from Aqueous Solutions

Zhang,

Song,

Luo

et al. 2024

Int J Environ Res

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Previous studies have demonstrated that schwertmannite (Sch) exhibits good adsorption performance for Cr (VI). In order to further enhance the ability to remove Cr(VI), this study prepared a novel composite (Fe(II)@Sch) by embedding ferrous iron (Fe(II)) on Sch. The adsorption performance of Cr(VI) on Fe(II)@Sch was investigated by batch adsorption experiments, and a possible removal mechanism was proposed through characterization analysis. The results showed that the optimal Fe/Sch ratio for Fe(II)@Sch preparation was 120 mmol/g. Fe(II)@Sch enabled e cient and rapid adsorption of Cr(VI). The maximum Cr(VI) adsorption capacity of Fe(II)@Sch was 4.17 mmol/g at pH 6.0, which was 69% higher when compared to Sch, and 81% of the maximum adsorption could be achieved within 1 min. The embedding of Fe(II) led to a decrease in the particle size and an increase in the speci c surface area (SSA) of Sch, which could be considered favorable for adsorption. After four repeated cycles 93.3% of the original Cr(VI) adsorption capacity was still maintained. X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy analysis showed that the interaction between Fe(II)@Sch and Cr(VI) followed an adsorption-reduction mechanism. The results demonstrated that Fe(II)@Sch could be used as an effective material for removing Cr(VI) from wastewater.

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Section: Morphological and Structural Characterizationsupporting

confidence: 89%

Synthesis, Characterization and Application of Ferrous Iron-Embedded Schwertmannite for Cr(VI) Reduction–Adsorption from Aqueous Solutions

Zhang,

Song,

Luo

et al. 2024

Int J Environ Res

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“…This result demonstrated that the nano-SWT can be reused as a Fenton-like catalyst for SMX degradation because it still maintained up to 85.2% of its catalytic capacity after six cycles of reuse. The stability and reusability properties of the nano-SWT in the nano-SWT/H 2 O 2 system are similar to those for the previous reports using schwertmannite as a catalyst [45,46]. oatings 2023, 13, x FOR PEER REVIEW as a Fenton-like catalyst for SMX degradation because it still maintained up catalytic capacity after six cycles of reuse.…”

Section: Stability and Reusability Of The Nano-swt In The Smx Degrada...supporting

confidence: 83%

“…oatings 2023, 13, x FOR PEER REVIEW as a Fenton-like catalyst for SMX degradation because it still maintained up catalytic capacity after six cycles of reuse. The stability and reusability pr nano-SWT in the nano-SWT/H2O2 system are similar to those for the previo ing schwertmannite as a catalyst [45,46]. The FTIR spectra of newly synthesized nano-SWT and nano-SWT af for six cycles are shown in Figure 6.…”

Section: Stability and Reusability Of The Nano-swt In The Smx Degrada...supporting

confidence: 56%

Heterogeneous Fenton-like Catalyzation of Nanoscale Schwertmannite for Sulfamethoxazole Degradation

et al. 2023

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Sulfamethoxazole (SMX) contamination in large quantities of wastewater can cause potential environmental problems. Due to difficulty in degrading SMX by natural processes, it is necessary to develop a novel technology to solve this problem. Advanced oxidation processes (AOPs) have been identified as methods with a high potential to treat recalcitrant organic pollutants. The nanoscale schwertmannite (nano-SWT) was prepared with an indoor-temperature synthesis method facilitated by polyvinylpyrrolidone (PVP). In this study, we performed a reaction of the nano-SWT materials with Fenton-like catalysts for SMX degradation in hydrogen peroxide (H2O2) media. The findings showed that the nano-SWT prepared by addition of 0.1 g·L−1 PVP (nano-SWT-n, n = 0.1) could degrade 92.5% of the SMX within 90 min at indoor temperature, which was due to the nano-SWT providing abundant reaction sites at the solid/solution interfaces. Additionally, SMX could be highly mineralized with 75% TOC removal and H2O2 was efficiently utilized during the nano-SWT/H2O2 process. In addition, after six cycles of Fenton-like degradation, the nano-SWT remained stable and reusable as a Fenton-like catalyst for SMX degradation. The nano-SWT performed well as a catalyst for SMX degradation. Additionally, this work provides a feasible environmental purification approach for the efficient degradation of SMX through the use of nanoscale schwertmannite as a catalyst in heterogeneous Fenton-like systems.

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“…In essence, the poorly crystalline schwertmannite is a forerunner to the more stable jarosite. In addition, IHSMs (both schwertmannite and jarosite) could be applied to environmental pollution remediation due to their potential as heterogeneous Fenton catalysts, adsorbents and soil remediation agents [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Potassium-Bicarbonate-Induced Mineralized Acid Mine Drainage into Iron Hydroxyl Sulfate Minerals for Better Water Remediation and Resource Reuse

He,

Wang,

Tang

et al. 2024

Sustainability

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Iron hydroxyl sulfate minerals (IHSMs, including schwertmannite and jarosite) are a promising material for environmental applications with excellent adsorption of metal oxygen anions. The acid mine drainage (AMD) abundant in iron and sulfate ions holds potential for the production of valuable IHSMs, thereby achieving resource recycling whilst simultaneously mitigating water contamination, which is important for the sustainable remediation of AMD. Conventional mineralization, which promotes the generation of minerals from Fe3+ and SO42− through the energy provided by chemical or biological oxidation, can only partially mineralize iron in AMD containing substantial quantities of Fe2+. In this study, an improved method for mineralizing AMD containing iron of a different valence into IHSMs under the induction of KHCO3 was proposed. For AMD containing Fe2+, the combination of KHCO3 and H2O2 was used to promote the hydrolysis of iron (92.7%) and sulfate (11.1%) into IHK minerals, which resulted in a significant increase in iron removal of 75.2% and a minor increase in sulfate removal of 4.9%, compared with the formation of schwertmannite from oxidation solely involving H2O2. For the AMD containing Fe3+, the energy generated by the acid–base reaction in water could also directly promote the formation of IK minerals from 97.2% iron and 6.9% sulfate. XRD and FTIR analyses confirmed the identification of the IHK and IK minerals as IHSMs transitioning from schwertmannite to jarosite. SEM and elemental analyses indicated that the mineral exhibited denser aggregate spheres with the incorporation of KHCO3 in mineralization yet displayed enhanced mineralization abilities for the contaminant ions in AMD. Moreover, despite the SSA of the modified minerals being diminished (2.02, 1.83 and 1.83 m2/g for IH, IHK and IK, respectively), the presence of more sulfate in the mineral enhanced the adsorption capacity of Cr(VI). Furthermore, the water quality results also illustrated that the removal ratios of iron and sulfate in AMD notably increased with the involvement of KHCO3 in mineralization. In conclusion, the KHCO3-induced mineralization of iron-containing (either divalent or trivalent) AMD into IHSMs not only improved the mineralization ratios and contaminant removal ratios for better remediation of AMD but also obtained mineral resources with better adsorption of Cr(VI), thereby fostering the sustainable advancement of the remediation of AMD. Therefore, this innovative strategy employing KHCO3-assisted chemical mineralization to form IHSMs holds ample potential and promises to be an efficacious methodology for the sustainable remediation of iron-rich AMD.

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Co-adsorption of As(III) and phenanthrene by schwertmannite and Fenton-like regeneration of spent schwertmannite to realize phenanthrene degradation and As(III) oxidation

Cited by 33 publications

References 46 publications

Synthesis, Characterization and Application of Ferrous Iron-Embedded Schwertmannite for Cr(VI) Reduction–Adsorption from Aqueous Solutions

Synthesis, Characterization and Application of Ferrous Iron-Embedded Schwertmannite for Cr(VI) Reduction–Adsorption from Aqueous Solutions

Heterogeneous Fenton-like Catalyzation of Nanoscale Schwertmannite for Sulfamethoxazole Degradation

Potassium-Bicarbonate-Induced Mineralized Acid Mine Drainage into Iron Hydroxyl Sulfate Minerals for Better Water Remediation and Resource Reuse

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