A5058441142- Radioactive element chemistry and processing
- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Arsenic contamination and mitigation
- Heavy metals in environment
- Iron oxide chemistry and applications
- Geochemistry and Elemental Analysis
- Mine drainage and remediation techniques
- Atmospheric aerosols and clouds
- CO2 Sequestration and Geologic Interactions
- TiO2 Photocatalysis and Solar Cells
- Recycling and Waste Management Techniques
- Advanced Photocatalysis Techniques
- Coal and Its By-products
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Gas Sensing Nanomaterials and Sensors
- Geochemistry and Geologic Mapping
- Groundwater flow and contamination studies
- Toxic Organic Pollutants Impact
Fudan University
2019-2023
Shanghai Institute of Pollution Control and Ecological Security
2023
State Key Laboratory of Pollution Control and Resource Reuse
2022
Reduction of U(VI) to U(IV) drastically reduces its solubility and has been proposed as a method for remediation uranium contamination. However, much is still unknown about the kinetics, mechanisms, products bioreduction in complex systems. In this study, experiments were conducted with Shewanella putrefaciens strain CN32 presence clay minerals two organic ligands: citrate EDTA. reactors U Fe(III)-clay minerals, rate was enhanced due ligands, likely because soluble Fe3+- Fe2+-ligand...
The association of poorly crystalline iron (hydr)oxides with organic matter (OM), such as extracellular polymeric substances (EPS), exerts a profound effect on Fe and C cycles in soils sediments, their behaviors under sulfate-reducing conditions involve complicated mineralogical transformations. However, how different loadings types EPS water chemistry affect the sulfidation still lacks quantitative systematic investigation. We here synthesized set ferrihydrite–organic (Fh–OM) coprecipitates...
Dissolved Mn(III) species have been recognized as a significant form of Mn in redox transition environments, but holistic understanding their geochemical properties still lacks the characterization reactivity reductants. Through using PbO2 surrogate oxidant and pyrophosphate (PP) model ligand, we evaluated thermodynamic kinetic constrains dissolved oxidation under environmentally relevant pH. Without disproportionation, complexes could be directly oxidized by to produce oxides. The reaction...
Adsorption of uranium onto goethite is an important partitioning process that controls mobility in subsurface environments, for which many different surface complexation models (SCMs) have been developed. While individual can fit the data they are parameterized, perform poorly when compared with experimental covering a broader range conditions. There imperative need to quantitatively evaluate variations and develop more robust model be used confidence across wide We conducted intercomparison...
Abstract. Dust is a major source of atmospheric aerosols. Its chemical composition often assumed to be similar the parent soil. However, this assumption has not been rigorously verified. Here, we generated dust aerosols from soils determine if there particle-size-dependent selectivity heavy metals in generation. Mn, Cd, Pb and other were found highly enriched fine-dust (PM2.5) aerosols, which can up ∼ 6.5-fold. To calculate contributions metals, regional air quality models usually use...
The interactions between organic ligands, Fe(II), and iron oxides are important in biogeochemical redox processes. effect of phthalic acid (PHA) on the reductive reactivity Fe(II) associated with goethite was examined using batch adsorption kinetic studies, attenuated total reflectance?Fourier transform infrared spectroscopy (ATR?FTIR), surface complexation modeling (SCM). PHA significantly inhibited Fe(II)/goethite, as quantified by pseudo-first-order reduction rate constants (k)...
Aluminum hydroxide plays a substantial role in regulating the environmental fate and transport of arsenate phosphate. These minerals display multiple types surface reactive sites with distinct adsorption affinities. As phosphate coexist many natural systems, detailed understanding their interactive behaviors on aluminum hydroxides underlying binding mechanisms is thus required to develop predictive models mobility. In this study, we explore how affects onto polymorphs gibbsite bayerite...
Abstract. Dust is a major source of atmospheric aerosols. Its chemical composition often assumed to be similar the parent soil. However, this assumption has not been rigorously verified. Here, we generated dust aerosols from soils determine if there particle size-dependent selectivity heavy metals in generation. Mn, Cd, Pb and other were found highly enriched fine (PM2.5) aerosols, which can up ~6.5-fold. To calculate contributions metals, regional air quality models usually use profiles US...