The influence of soil particle size distribution and clay minerals on ammonium nitrogen in weathered crust elution-deposited rare earth tailing

Fan, Xin; Xue, Qi‐Kun; Siwen, Liu; Tang, Jie; Qiao, Jiyang; Yi, Huang; Sun, Juan; Liu, NanNan

doi:10.1016/j.ecoenv.2020.111663

Cited by 31 publications

(3 citation statements)

References 35 publications

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“…The fact that the biomass-clay particles are more evenly distributed for Apha 5 FD is coincident with the results obtained for real soils particles, where it was indicated that the specific surface area increases with increasing contents of clay . A more detailed support of these observations will be discussed in the FTIR and XPS sections.…”

Section: Resultssupporting

confidence: 82%

Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents: Effect of Temperature and Amount of Clay during Synthesis

Olivelli

Schampera

Woche

et al. 2022

Ind. Eng. Chem. Res.

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The physicochemical properties of an enhanced adsorbent material generated by clays and fungal biomass can be modified systematically. We used spectroscopic techniques to investigate the interaction mechanisms between biomass and clay and how surface properties change with synthesis temperature and clay amounts. Biomass-clay complexes were synthesized and either shock-frozen and freeze-dried or dried at 60 °C in the oven. Surface and bulk properties were analyzed by scanning electron microscopy, attenuated total reflectance-Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and by wettability and surface charge measurements. Interactions of specific biomass-related molecules with clay and changes in physicochemical properties were observed. Higher amounts of clay caused a decrease in particle aggregation while the biomass arranged more evenly. XPS proved interactions due to exchange reactions between Na from the clay and biomass external organic compounds. FTIR, wettability, surface charge, and XPS indicated a less ordered arrangement of the biomass on the clay when drying was performed at 60 °C. The properties of these types of materials define their potential use in future applications. These results indicate the possibility of the selective creation of bioclays: more hydrophobic, with a higher content of organic matter or more specific functional groups on the surface.

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Section: Resultssupporting

confidence: 82%

Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents: Effect of Temperature and Amount of Clay during Synthesis

Olivelli

Schampera

Woche

et al. 2022

Ind. Eng. Chem. Res.

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“…In general, as demonstrated in their study by Fan et al (2021), comparing soil fractions with grain diameters of 2.0-1.0, 1.0-0.5, 0.5-0.25, 0.25-0.1, 0.1-0.075 and <0.075 mm, determined using the sieve method -the level of ammonium nitrogen in the soil increases with decreasing soil particle size (there is increase in both specific surface area of soil and its clay particle content). This regularity was also confirmed by Podlasek, Koda and Vaverková (2021) who demonstrated a positive relationship between the amount of NH 4 -N and the content of silt and clay particles in the 0-30 cm arable soil layer -from three regions of Poland.…”

Section: Resultsmentioning

confidence: 66%

The relationship between the granulometric composition of grassland soils and their content of mineral nitrogen and organic carbon

Pietrzak,

Urbaniak

2023

Journal of Water and Land Development

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The study analysed the relationship between the granulometric composition of grassland soils as determined by laser diffraction and their content of mineral forms of nitrogen and organic carbon. The content of mineral forms of nitrogen (NO 3 -N and NH 4 -N) in soil samples -after their extraction with 1% solution K 2 SO 4 , was determined by flow colourimetry. Soil organic carbon content was determined using the Tyurin method. The study examined soil samples collected from 169 control and measurement sites located in different regions of Poland in terms of conditions for agricultural production. Statistical analyses of the research results showed that the grain size of grassland soils had a significant effect on their ammonium nitrogen content but not on their nitrate nitrogen and organic carbon content. In this respect, it was found that there was a positive correlation between the share of the sand fraction and the content of ammonium nitrogen in soils and an opposite relation between the share of coarse silt, fine silt and clay and the content of the aforementioned component. Results of the analyses differ considerably from the results of studies by other authors on the influence of soil grain size distribution on the content of mineral nitrogen and organic carbon in soils based on classical methods of measurements of soil particle size distribution. There is a need to develop solutions to convert and compare results obtained by laser diffraction and standard methods.

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“…Meanwhile, the degree of oxidation of metal sul de is not only related to oxygen and water, but also has a great in uence on the particle size distribution of tailings (Jakubek et al, 2018;Silveira et al, 2018;Kang et al, 2018). In this study, the particle-size classi cation was: coarse sand (1 ~ 0.5 mm), medium sand (0.5 ~ 0.25 mm), ne sand (0.25 0.125 mm), very ne sand (0.125 ~ 0.063 mm), silt sand (0.063 ~ 0.002 mm) and clay (< 0.002 mm) (Fan et al, 2021). As shown in Fig.…”

Section: Particle Size Distributionmentioning

confidence: 95%

Evaluating the Profile Geochemical Characteristics and Environmental Risk Prediction of Typical Sulfide Tailing Ponds Through Multiple Methods

Zhang¹,

Chen²,

Jiang³

et al. 2021

Preprint

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Abandoned tailings generated from copper mining are exposed to the environment for a long time will cause related risks, such as stability, landslides, surface and groundwater pollution, acid mine drainage (AMD) and secondary mineral deposits. This research started from multiple methods and comprehensively assessed the current status of mine tailings through the joint application of geophysics, geochemistry and mineralogy techniques to identify relevant environmental hazards. A thick oxidized hardened layer was formed on the surface of the tailings dam, but there were still faults or crack that affected its structural stability. According to the low-resistivity distribution of the tailings, the surface oxide compaction was judged, and the existence of high-resistivity cracks judged the potential migration path of heavy metals (HMs). The microscopic morphology and existing mineral phases of tailings particles at different depths in the profile were determined by SEM and XRD of representative samples as the main feature of iron crystalline phase. As the profile depth increased, the minerals such as calcite, pyrite and goethite gradually appeared. In addition, Cr and As were no risk, Cu, Zn, Pb were low risk, Ni was medium risk, and Cd was high risk in risk assessment code (RAC) analysis of the tailings. Judging whether HMs in the tailings are hazardous substances according to the results of toxicity characteristic leaching procedure (TCLP), it was found that the leaching contents of Cu, Zn, Pb, Cr, Ni, As were all lower than the limit, while the leaching content of Cd was higher than the limit, and additional attention should be paid to Cd pollution.

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The influence of soil particle size distribution and clay minerals on ammonium nitrogen in weathered crust elution-deposited rare earth tailing

Cited by 31 publications

References 35 publications

Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents: Effect of Temperature and Amount of Clay during Synthesis

Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents: Effect of Temperature and Amount of Clay during Synthesis

The relationship between the granulometric composition of grassland soils and their content of mineral nitrogen and organic carbon

Evaluating the Profile Geochemical Characteristics and Environmental Risk Prediction of Typical Sulfide Tailing Ponds Through Multiple Methods

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