scholarly journals Mechanism and modeling of hexavalent chromium interaction with a typical black soil: the importance of the relationship between adsorption and reduction

RSC Advances ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 5582-5591 ◽  
Author(s):  
Jia Zhang ◽  
Huilin Yin ◽  
Samuel Barnie ◽  
Minghai Wei ◽  
Honghan Chen
Keyword(s):  
Kinetic Model ◽  
Hexavalent Chromium ◽  
Black Soil ◽  
Reduction Mechanism ◽  
Soil P ◽  
Adsorption Reduction ◽  
The Relationship

A novel two-step kinetic model was developed based on the proposed “adsorption–reduction” mechanism of Cr(vi) retention by a typical black soil.

scholarly journals Efficient removal of hexavalent chromium from water by an adsorption–reduction mechanism with sandwiched nanocomposites

RSC Advances ◽  
2018 ◽  
Vol 8 (27) ◽  
pp. 15087-15093 ◽  
Author(s):  
Weikang Liu ◽  
Liang Yang ◽  
Shihao Xu ◽  
Yao Chen ◽  
Bianhua Liu ◽  
...  
Keyword(s):  
Hexavalent Chromium ◽  
Reduction Mechanism ◽  
Efficient Removal ◽  
Chromium Ion ◽  
Adsorption Reduction

A sandwiched nanocomposite has been developed to remove hexavalent chromium ion Cr(vi) from water by an adsorption–reduction mechanism.

scholarly journals Recyclable functionalized polymer films for the efficient removal of hexavalent chromium from aqueous solutions

RSC Advances ◽  
2019 ◽  
Vol 9 (63) ◽  
pp. 36751-36757 ◽  
Author(s):  
Weikang Liu ◽  
Mei Wang ◽  
Zhigang Wen ◽  
Zhong Li ◽  
Liang Yang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Composite Film ◽  
Hexavalent Chromium ◽  
Polymer Films ◽  
Reduction Mechanism ◽  
Efficient Removal ◽  
Chromium Ion ◽  
Adsorption Reduction

A PEI-PVA functionalized composite film has been developed to remove hexavalent chromium ion Cr(vi) from water by an adsorption–reduction mechanism.

scholarly journals Richness of Rhizosphere Organisms Affects Plant P Nutrition According to P Source and Mobility

Agriculture ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 157
Author(s):  
Jean Trap ◽  
Patricia Mahafaka Ranoarisoa ◽  
Usman Irshad ◽  
Claude Plassard
Keyword(s):  
Careful Consideration ◽  
Soil Conditions ◽  
Organic P ◽  
P Nutrition ◽  
Soil P ◽  
P Acquisition ◽  
Complex Interactions ◽  
Experimental Trials ◽  
The Relationship

Plants evolve complex interactions with diverse soil mutualist organisms to enhance P mobilization from the soil. These strategies are particularly important when P is poorly available. It is still unclear how the soil P source (e.g., mineral P versus recalcitrant organic P) and its mobility in the soil (high or low) affect soil mutualist biological (ectomycorrhizal fungi, bacteria and bacterial-feeding nematodes) richness—plant P acquisition relationships. Using a set of six microcosm experiments conducted in growth chamber across contrasting P situations, we tested the hypothesis that the relationship between the increasing addition of soil mutualist organisms in the rhizosphere of the plant and plant P acquisition depends on P source and mobility. The highest correlation (R2 = 0.70) between plant P acquisition with soil rhizosphere biological richness was found in a high P-sorbing soil amended with an organic P source. In the five other situations, the relationships became significant either in soil conditions, with or without mineral P addition, or when the P source was supplied as organic P in the absence of soil, although with a low correlation coefficient (0.09 < R2 < 0.15). We thus encourage the systematic and careful consideration of the form and mobility of P in the experimental trials that aim to assess the role of biological complexity on plant P nutrition.

Nano nickel embedded in N-doped CNTs-supported porous biochar for adsorption-reduction of hexavalent chromium

2021 ◽  
pp. 125693
Author(s):  
Danchen Zhu ◽  
Jingai Shao ◽  
Ziqing Li ◽  
Haiping Yang ◽  
Shihong Zhang ◽  
...  
Keyword(s):  
Hexavalent Chromium ◽  
Adsorption Reduction ◽  
Nano Nickel

scholarly journals Spatial variation features description of soil available P, K, Mg and soil pH by proportional effect

2011 ◽  
Vol 52 (No. 1) ◽  
pp. 41-46 ◽  
Author(s):  
L. Brodský ◽  
J. Száková ◽  
M. Bazalová ◽  
V. Penížek
Keyword(s):  
Spatial Variation ◽  
Soil Ph ◽  
Correlation Coefficients ◽  
Available P ◽  
Relationship Strength ◽  
Soil P ◽  
Linear Relationships ◽  
Field Fluctuations ◽  
Proportional Effect ◽  
The Relationship

This paper investigates the proportional effect of selected soil properties &ndash; low spatial variation changes are related to their local magnitudes (here standard deviation vs. mean). Content of available P, K, and Mg, and soil pH were analysed on nine agricultural fields of the&nbsp;Xzech Republic. Firstly, strong direct within-field proportional effect based on Moving Window Statistics (MWS) was found for soil P and K, while Mg did not exhibit any clear proportionality. Soil pH showed indication of inverse proportional effect with high field-to-field fluctuations. The relationship strength of the effect was functionally related to the asymmetry (skewness) of distribution (r = 0.31 &times; skew 0.08). Secondly, between-field proportional effect of 9 surveyed fields, as a&nbsp;measure at different scale, showed generally parallel results with the MWS approach. Proportionality is therefore not scale dependent. However, slopes of linear relationships were different for the two scales. Finally, models for prediction of proportional variogram parameters were calculated. Correlation coefficients of relationship between semivariance parameters and mean proved that sill-nugget is more stable (r = 0.74 for P and 0.83 for K) than nugget (r = 0.30 for P and 0.53 for K).

An in situ IR study of the NOx adsorption/reduction mechanism on modified Y zeolites

2003 ◽  
Vol 5 (9) ◽  
pp. 1897-1905 ◽  
Author(s):  
Christian Sedlmair ◽  
Barbara Gil ◽  
Kulathuiyer Seshan ◽  
Andreas Jentys ◽  
Johannes A. Lercher
Keyword(s):  
Reduction Mechanism ◽  
Y Zeolites ◽  
In Situ Ir ◽  
Nox Adsorption ◽  
Adsorption Reduction ◽  
Ir Study
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