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Simultaneous removal of arsenate and fluoride from water by Al-Fe (hydr)oxides

Junlian QIAO, Zimin CUI, Yuankui SUN, Qinghai HU, Xiaohong GUAN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 169-179 doi: 10.1007/s11783-013-0533-0

Abstract: Al-Fe (hydr)oxides with different Al/Fe molar ratios (4∶1, 1∶1, 1∶4, 0∶1) were prepared using a co-precipitationThe 4Al:Fe was superior to other adsorbents for removal of arsenate and fluoride in the pH range of 5.0The adsorption capacity of the Al-Fe (hydr)oxides for arsenate and fluoride at pH 6.5±0.3 increased withindicated that the adsorption of arsenate and fluoride by Al-Fe (hydr)oxides was realized primarilyMoreover, there was a very good correlation between the surface hydroxyl group densities of Al-Fe (hydr

Keywords： Al-Fe (hydr)oxides     groundwater     adsorption     hydroxyl group     ligand exchange    

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Diphenylarsinic acid sorption mechanisms in soils using batch experiments and EXAFS spectroscopy

Meng Zhu, Yongming Luo, Ruyi Yang, Shoubiao Zhou, Juqin Zhang, Mengyun Zhang, Peter Christie, Elizabeth L. Rylott

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1237-x

Abstract: Kf was significantly positive correlated with oxalate-extractable Fe2O3.and the sorption capacity, Kf, was significantly and positively correlated with oxalate-extractable Fe2O3Subsequent removal of soil organic matter from these amorphous and crystalline metal (hydr)oxide-depletedprimarily formed bidentate binuclear (2C) and monodentate mononuclear (1V) coring-sharing complexes with As-Fedistances of 3.34 and 3.66 Å, respectively, on Fe (hydr)oxides.

Keywords： Diphenylarsinic acid     EXAFS     Fe (hydr)oxide     Soil organic matter     Sorption mechanism    

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Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO

Wei XU,Huachun LAN,Hongjie WANG,Hongming LIU,Jiuhui QU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 385-393 doi: 10.1007/s11783-014-0648-y

Abstract: The adsorption potential of FMBO, FeOOH, MnO for the removal of Cd , Cu and Pb in aqueous systems was investigated in this study. Comparing to FMBO and FeOOH, MnO offered a much higher removal capacity towards the three metal ions. The maximal adsorption capacity of MnO for Cd , Cu and Pb were 1.23, 2.25 and 2.60 mmol·g , respectively. And that for FMBO were 0.37, 1.13, and 1.18 mmol·g and for FeOOH were 0.11, 0.86 and 0.48 mmol·g , respectively. The adsorption behaviors of the three metal ions on the three adsorbents were all significantly affected by pH values and heavy metal removal efficiency increased with pH increased. The Langmuir and Freundlich adsorption models were used to describe the adsorption equilibrium of the three metal ions onto the three adsorbents. Results showed that the adsorption equilibrium data fitted well to Langmuir isotherm and this indicated that adsorption of metal ions occurred on the three metal oxides adsorbents limited to the formation of a monolayer. More negative charged of MnO surface than that of FMBO and FeOOH could be ascribed by lower pH of MnO than that of FMBO and FeOOH and this could contribute to more binding sites on MnO surface than that of FMBO and FeOOH. The higher metal ions uptake by MnO than FMBO and FeOOH could be well explained by the surface charge mechanism.

Keywords： heavy metals     Fe-Mn binary oxide     manganese dioxide     ferric hydroxide     adsorption    

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Effects of iron oxide nanoparticles on phenotype and metabolite changes in hemp clones ( L.)

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1569-9

Abstract:

● Fe3O4 NPs increased the biomass and chlorophyll

Keywords： Fe3O4 nanoparticle     Hemp     Growth enhancement     THC     Metabolite    

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Chemical reactions of oily sludge catalyzed by iron oxide under supercritical water gasification condition

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 886-896 doi: 10.1007/s11705-021-2125-z

Abstract: To evaluate the mechanism of Fe2O3 catalyst and the migration pathways of heteroatomsIn terms of the catalytic mechanisms of Fe2O3, the surface lattice oxygen is consumedsub>2, improving the catalytic performance of the cluster due to more unsaturated coordination FeHeavy metal particles presented in the oily sludge, such as iron in association with Fe2O<

Keywords： oily sludge     SCWG     ReaxFF     Fe2O3     heteroatoms    

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Removal of nitric oxide from simulated flue gas using aqueous persulfate with activation of ferrous ethylenediaminetetraacetate

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 460-469 doi: 10.1007/s11705-022-2224-5

Abstract: Nitric oxide being a major gas pollutant has attracted much attention and various technologies have beensub>4)2S2O8) activated by ferrous ethylenediaminetetraacetate (Feand through electron spin resonance spectrometer detection and product analysis, it was revealed that FeThe obtained results demonstrated a good applicable potential of RPB/PS/Fe2+-EDTA in the removal

Keywords： rotating packed bed     Fe2+-EDTA     sulfate radical     hydroxyl radical     NO removal efficiency    

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The performance of nitrate-reducing Fe(II) oxidation processes under variable initial Fe/N ratios: The

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1366-2

Abstract:

•Bacterially-mediated coupled N and Fe processes examined in incubation

Keywords： Denitrification     N2O emission     Fe(II) oxidation     Fe/N ratio     Fe minerals    

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Cadmium removal mechanistic comparison of three Fe-based nanomaterials: Water-chemistry and roles ofFe dissolution

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1586-8

Abstract:

● nZVI, S-nZVI, and nFeS were systematically compared for Cd(II) removal.

Keywords： Nano zero valent iron     Sulfided zero valent iron     FeS     Cd(II) immobilization     Fe dissolution    

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Cuprous oxide/copper oxide interpenetrated into ordered mesoporous cellulose-based carbon aerogels for

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 918-929 doi: 10.1007/s11705-023-2305-0

Abstract: In this work, a cuprous oxide/copper oxide composite was interpenetrated onto carbon nanosheets of cellulose-basedThe introduction of the carbon aerogel effectively prevents the aggregation of the cuprous oxide/copperoxide composite.stronger charge transfer capacity, and lower recombination rate of photogenerated carriers than copper oxide

Keywords： carbon aerogel     photocatalysis     dye degradation     biomass     cuprous oxide/copper oxide    

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Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 102-115 doi: 10.1007/s11705-022-2179-6

Abstract: Herein, via a one-pot hydrothermal method, Ni/Fe/V ternary layered double hydroxides (NiFeV-LDH) derivedBy changing the feeding ratio of Fe and V salts, the prepared ternary hydroxides were optimized.At an Fe:V ratio of 0.5:0.5, NiFeV-LDH exhibits outstanding OER activity superior to that of the binarythe third metal into bimetallic hydroxide layers: (a) Fe plays a crucial role as the active site; (b) electron-withdrawing V stabilizes the high valence state of Fe, thus accelerating the OER process;

Keywords： oxygen evolution reaction     electrocatalysts     ternary layered double hydroxides     long-term stability    

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Floret-like Fe–N nanoparticle-embedded porous carbon superstructures from a Fe-covalent triazine polymer

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 525-535 doi: 10.1007/s11705-022-2232-5

Abstract: Fe–Nx nanoparticles-embedded porous carbons with a desirable superstructure have attractedHerein, we employed Fe-coordinated covalent triazine polymer for the fabrication of Fe–Nxwithin the covalent triazine polymer interwork in high proportions contributes to the generation of Fe/N coordination and subsequent Fe–Nx nanoparticles.Owing to the utilization of NaCl crystals, the resultant Fe/N@CNF-800 which was generated by pyrolysis

Keywords： Fe–Nx nanoparticles     hypersaline-confinement conversion     floret-like carbon     covalent    

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Mechanical properties and microstructure of multilayer graphene oxide cement mortar

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1058-1070 doi: 10.1007/s11709-021-0747-3

Abstract: This study reports on the effects of multilayer graphene oxide (MGO) on compressive strength, flexural

Keywords： graphene oxide     cement     mortar     mechanical properties     microstructure    

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Plasma spray coating on interconnector toward promoted solid oxide fuel cells and solid oxide electrolysis

Frontiers in Energy doi: 10.1007/s11708-023-0901-9

Abstract: Interconnector is a critical component to construct solid oxide cells (SOCs) stack.

Keywords： interconnector coating     plasma spray     electrochemical performance     Cr diffusion inhibition     solid oxide    

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Catalytic process modeling and sensitivity analysis of alkylation of benzene with ethanol over MIL-101(Fe) and MIL-88(Fe)

Ehsan Rahmani, Mohammad Rahmani

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1100-1111 doi: 10.1007/s11705-019-1891-3

Abstract: A solvothermal method was used to synthesize MIL-101(Fe) and MIL-88(Fe), which were used for alkylation

Keywords： MOFs     alkylation     ethylbenzene     catalysts pellet model     kinetic model     sensitivity analysis    

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Effect of Fe on NO release during char combustion in air and O

Ying GU, Xiaowei LIU, Bo ZHAO, Minghou XU

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 200-206 doi: 10.1007/s11708-012-0181-2

Abstract: The Fe addition increases the NO conversion ratio, and the effect of Fe rises steeply with the processThe results also indicate that the release of NO increases more significantly with the Fe addition in

Keywords： NO     Fe     char     combustion     CO2    

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Title Author Date Type Operation

Simultaneous removal of arsenate and fluoride from water by Al-Fe (hydr)oxides

Junlian QIAO, Zimin CUI, Yuankui SUN, Qinghai HU, Xiaohong GUAN

Journal Article

Diphenylarsinic acid sorption mechanisms in soils using batch experiments and EXAFS spectroscopy

Meng Zhu, Yongming Luo, Ruyi Yang, Shoubiao Zhou, Juqin Zhang, Mengyun Zhang, Peter Christie, Elizabeth L. Rylott

Journal Article

Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO

Wei XU,Huachun LAN,Hongjie WANG,Hongming LIU,Jiuhui QU

Journal Article

Effects of iron oxide nanoparticles on phenotype and metabolite changes in hemp clones ( L.)

Journal Article

Chemical reactions of oily sludge catalyzed by iron oxide under supercritical water gasification condition

Journal Article

Removal of nitric oxide from simulated flue gas using aqueous persulfate with activation of ferrous ethylenediaminetetraacetate

Journal Article

The performance of nitrate-reducing Fe(II) oxidation processes under variable initial Fe/N ratios: The

Journal Article

Cadmium removal mechanistic comparison of three Fe-based nanomaterials: Water-chemistry and roles ofFe dissolution

Journal Article

Cuprous oxide/copper oxide interpenetrated into ordered mesoporous cellulose-based carbon aerogels for

Journal Article

Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Journal Article

Floret-like Fe–N nanoparticle-embedded porous carbon superstructures from a Fe-covalent triazine polymer

Journal Article

Mechanical properties and microstructure of multilayer graphene oxide cement mortar

Journal Article

Plasma spray coating on interconnector toward promoted solid oxide fuel cells and solid oxide electrolysis

Journal Article

Catalytic process modeling and sensitivity analysis of alkylation of benzene with ethanol over MIL-101(Fe) and MIL-88(Fe)

Ehsan Rahmani, Mohammad Rahmani

Journal Article

Effect of Fe on NO release during char combustion in air and O

Ying GU, Xiaowei LIU, Bo ZHAO, Minghou XU

Journal Article