Adsorption of heavy metal ions by iron tailings: Behavior, mechanism, evaluation and new perspectives

Feng, Yu; Li, Haoran; Wu, Ruifeng; Ju, Jinrong; Liu, Shunliang; Yang, Yi; Wang, Ben

doi:10.1016/j.jclepro.2022.131065

Cited by 53 publications

(14 citation statements)

References 48 publications

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“…Table 7 summarizes the ability of other adsorbents reported in the literature to adsorb Cu 2+ , Zn 2+ , and Pb 2+ . Obviously, Fe 3 O 4 -L is superior to Pellet material of iron tailings (IT) compounded with sodium alginate (SA) [44], GCM2 [45], KOH-RH [46], SiO 2 /PAA [47], Sawdust of Populus alba [48] and Magnetite nanospheres [49]. Although some adsorbents such as Nanoporous activated neem bark have a better adsorption effect than Fe 3 O 4 -L, these adsorbents have the problems of a complicated preparation process, high cost and difficulty in recycling [41][42][43].…”

Section: Analysis Of Adsorption Behaviormentioning

confidence: 99%

Optimization of Preparation of Fe3O4-L by Chemical Co-Precipitation and Its Adsorption of Heavy Metal Ions

Di¹,

Sun²,

Zhang³

et al. 2023

Journal of Renewable Materials

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To address the serious pollution of heavy metals in AMD, the difficulty and the high cost of treatment, Fe 3 O 4 -L was prepared by the chemical co-precipitation method. Based on the single-factor and RSM, the effects of particle size, total Fe concentration, the molar ratio of Fe 2+ to Fe 3+ and water bath temperature on the removal of AMD by Fe 3 O 4 -L prepared by chemical co-precipitation method were analyzed. Static adsorption experiments were conducted on Cu 2+ , Zn 2+ and Pb 2+ using Fe 3 O 4 -L prepared under optimal conditions as adsorbents. The adsorption properties and mechanisms were analyzed by combining SEM-EDS, XRD and FTIR for characterization. The study showed that the effects of particle size, total Fe concentration and the molar ratio of Fe 2+ to Fe 3+ are larger. Obtained by response surface optimization analysis, the optimum conditions for the preparation of Fe 3 O 4 -L were a particle size of 250 mesh, a total Fe concentration of 0.5 mol/L, and a molar ratio of Fe 2+ to Fe 3+ of 1:2. Under these conditions, the removal rates of Cu 2+ , Zn 2+ , and Pb 2+ were 94.52%, 88.49%, and 96.69% respectively. The adsorption of Cu 2+ , Zn 2+ and Pb 2+ by Fe 3 O 4 -L prepared under optimal conditions reached equilibrium at 180 min, with removal rates of 99.99%, 85.27%, and 97.48%, respectively. The adsorption reaction of Fe 3 O 4 -L for Cu 2+ and Zn 2+ is endothermic, while that for Pb 2+ is exothermic. Fe 3 O 4 -L can still maintain a high adsorption capacity after five cycles of adsorption-desorption experiments. Cu 2+ , Zn 2+ and Pb 2+ mainly exist as CuFe 2 O 4 , Zn(OH) 2 , ZnFe 2 O 4 and PbS after being adsorbed by Fe 3 O 4 -L, which is the result of the combination of physical diffusion, ion exchange and surface complexation reaction.

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Section: Analysis Of Adsorption Behaviormentioning

confidence: 99%

Optimization of Preparation of Fe3O4-L by Chemical Co-Precipitation and Its Adsorption of Heavy Metal Ions

Di¹,

Sun²,

Zhang³

et al. 2023

Journal of Renewable Materials

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“…The dynamic boundary model was widely used to describe the adsorbed behavior of porous materials to determine the rate-limiting step of the adsorption rate (Xu et al, 2022). The adsorption experimental data (t vs. q t ) under conditions of the initial solution pH of 2, the initial Cr(VI) concentration of 100 mg/L, adsorbent dosage of 1 g/L and the adsorption temperature of 25 o C was tted to study the rate-limiting step of the adsorption process with dynamic boundary model equation.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Highly efficient removal of hexavalent chromium by magnetic Fe–C composite from reed straw and electric furnace dust waste

Wang

Zeng

Wang

et al. 2022

Environ Sci Pollut Res

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Reed straw and electric furnace dust (EFD) waste were used to prepare magnetic Fe-C composite (EFD&C) by co-precipitation and high-temperature activation method to remove Cr(VI) from water. The magnetic EFD&C owned a large speci c surface (536.61 m 2 /g) and a porous structure (micropores and mesopores), and had an e cient removal capacity for Cr(VI). Under conditions of pH ( 2), the addition amount of EFD&C (1 g/L), the adsorption time (760 min), and the temperature (45 o C), the maximum adsorption capacity reached 111.94 mg/g. The adsorption mechanism mainly attributed to chemical adsorption (redox), Cr(VI) reduced to Cr(III) by Fe(II) and Fe(0) (from Fe 3 O 4 and Fe components in EFD) and surface functional groups of -OH, C = C, C-C and O-C = O (from biochar), and secondary attributed to physical adsorption, Cr(VI) and Cr(III) (from reduced Cr(VI)) adsorbed into the porous structure of EFD&C.This study provided guidance for the recycling of iron-containing metallurgical solid and biomass waste.

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“…The adsorbents are roughly divided into five types: modified silicon-based materials, modified aluminum-based materials, modified manganesebased materials, modified carbon-based materials, and biological materials. (Choi et al, 2020;Xie et al, 2021;Chen et al, 2022;Shi et al, 2022;Xu et al, 2022). In recent years, nano titanium dioxide (nano TiO 2 ) materials have been used as adsorbent materials by many researchers due to their advantages of large specific surface area and porosity.…”

Section: Introductionmentioning

confidence: 99%

Effective adsorption of heavy metal ions in water by sulfhydryl modified nano titanium dioxide

Chen

Li²,

Liu³

et al. 2023

Front. Chem.

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Background: The monitoring and removal of heavy metal ions in wastewater will effectively improve the quality of water and promote the green and sustainable development of ecological environment. Using more efficient adsorption materials and more accurate detection means to treat heavy metal ions in water has always been a research focus and target of researchers.Method: A novel titania nanomaterial was modified with sulfhydryl group (nano TiO2-SH) for detection and adsorption of heavy metal ions in water, and accurately characterize the adsorption process using Surface-Enhanced Raman Spectroscopy (SERS) and other effective testing methods.Results: The maximum adsorption efficiency of nano TiO2-SH for the Hg2+, Cd2+, Pb2+ three heavy metal ions reached 98.3%, 98.4% and 98.4% respectively. And more importantly, after five cycles of adsorption and desorption, the adsorption efficiency of nano TiO2-SH for these three metal ions is still above 96%.Conclusion: These results proved the nano TiO2-SH adsorbent has great potential in practical water pollution purification.

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Adsorption of heavy metal ions by iron tailings: Behavior, mechanism, evaluation and new perspectives

Cited by 53 publications

References 48 publications

Optimization of Preparation of Fe3O4-L by Chemical Co-Precipitation and Its Adsorption of Heavy Metal Ions

Optimization of Preparation of Fe3O4-L by Chemical Co-Precipitation and Its Adsorption of Heavy Metal Ions

Highly efficient removal of hexavalent chromium by magnetic Fe–C composite from reed straw and electric furnace dust waste

Effective adsorption of heavy metal ions in water by sulfhydryl modified nano titanium dioxide

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