Cadmium speciation as influenced by soil water content and zinc and the studies of kinetic modeling in two soils textural classes

Rassaei, Farzad; Hoodaji, Mehran; Abtahi, Seyed Ali

doi:10.1016/j.iswcr.2020.05.003

Cited by 30 publications

(13 citation statements)

References 31 publications

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“…A 5 cm coating of deionized water was poured on top of soil samples in the pots for 15 days in growth chambers before rice (Oryza sativa L.) was planted in them. 42,43…”

Section: Treatmentsmentioning

confidence: 99%

Nitrous oxide emissions from rice paddy: Impacts of rice straw and water management

Rassaei

2023

Env Prog and Sustain Energy

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Typically, organic amendment additions like rice straw (RS) are used in agriculture to improve soil quality. The application of RS may influence the production of methane and nitrous oxide (N 2 O), which may increase the amount of accessible nutrients and organic matter (OM). When compared to farmers' practices of continuous flooding irrigation (CFI), water management (WM) techniques like alternative wetness and dryness irrigation (AWDI) in paddy rice cultivation boost water use efficiency and may result in lower greenhouse gas (GHGs) emissions. A randomized complete block design (RCBD) was employed to evaluate the impacts of WM (CFI and AWDI), RS (15.0 and 30.0 ton ha À1 ), and their interaction (RS*WM) on the N 2 O emission and rice yield in a rice paddy calcareous soil. In comparison to control, a single application of RS at 15.0 and 30.0 ton ha À1 significantly reduced N 2 O emissions by 16.20% and 31.40% (p < 0.01). AWDI regime increased N 2 O emissions by 67.0% in comparison to the CFI regime (p < 0.01). According to two tailed Pearson correlation, the correlations between AWDI and N 2 O emissions in the days following rice planting were significantly positive at 0.01 levels. In AWDI regime, adding RS significantly reduced N 2 O emissions by 18.68% and 31.55% in 15.0 and 30.0 ton ha À1 added RS, respectively, compared to solo WM treatments (p < 0.01). Both RS rates resulted in a considerable increase in biomass and rice grain while AWDI had no significant effect on them. Our study shows that AWDI saved 18.50% water in comparison with CFI regime.

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“…A 5 cm coating of deionized water was poured on top of soil samples in the pots for 15 days in growth chambers before rice (Oryza sativa L.) was planted in them. 42,43…”

Section: Treatmentsmentioning

confidence: 99%

Nitrous oxide emissions from rice paddy: Impacts of rice straw and water management

Rassaei

2023

Env Prog and Sustain Energy

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“…As soon as possible, abandoned mine ecological rehabilitation should be performed, to control the potential sources of pollution [ 29 ]. Strengthening the study of chemical forms of Cd in soil [ 30 ], understanding the characteristics of soil geochemistry, and performing the targeted remediation of soil pollution should be the goals of future research.…”

Section: Resultsmentioning

confidence: 99%

Geochemical Anomaly Characteristics of Cd in Soils around Abandoned Lime Mines: Evidence from Multiple Technical Methods

et al. 2021

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Lime mines are a potential source of pollution, and the surrounding soil environment is generally at threat, especially in abandoned lime mines. This paper focuses on the study area in eastern Anhui, attempting to analyze whether Cd enrichment is related to abandoned mines. On the basis of geological investigation, this study systematically used XRD, XRF, GTS and universal Kriging interpolation to determine the distribution law of Cd in the study area, and evaluated the potential ecological risk of Cd. The results showed that the main mineral types of soil samples of red clastic rock soil parent material (RdcPm) and soil samples of carbonate soil parent material (CPm) were not completely the same. Correlation analysis showed that CaO, MgO and Cd were positively correlated with the CPm. Human activities led to the accumulation of Cd in the study area. High Cd was mainly concentrated in the northwest of the study area, which was correlated with abandoned mines and soil parent materials. The study area was dominated by slight potential risks, although some areas had medium potential risks and high potential risks. All potential high risks were in the CPm field. This study provides a scientific basis for the comprehensive utilization and development planning of soil in the study area.

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“…Similar to cationic micronutrients (Fe 2+ , Mn 2+ , Zn 2+ , and Cu 2+ ), cadmium is retained at soil exchangeable sites by plants as Cd 2+ and has characteristics that are essentially identical to those of zinc. In contrast to Zn, which can form layered double hydroxides (LDH) compounds (ZnAl) that become more stable with time (Roberts et al, 2003;Rassaei et al, 2020a), Cd has not yet been discovered to form LDH compounds, and the majority of Cd remains in the labile pool throughout time (Kukier et al, 2010;Rassaei et al, 2020d).…”

Section: Introductionmentioning

confidence: 99%

Effect of monocalcium phosphate on the concentration of cadmium chemical fractions in two calcareous soils in Iran

Rassaei¹

2022

Soil Sci. Ann.

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This study has been done to see the impact of phosphorus (P) on the concentration of cadmium (Cd) chemical fractions in two sorts of calcareous soils within the Fars province in Iran. Because of these interactions, we looked at the infl uence of phosphorus on cadmium fractions. Variables were three levels of Cd (0.0, 30.0 and 60.0 mg kg -1 of soil from CdSO 4 . 8H 2 O), three levels of p (0.0, 50.0 and 100.0 mg kg -1 of soil from Ca (H 2 PO 4 ) 2 . H 2 O, three levels Incubation time (2, 4 and 8 weeks) and two sorts of soil (clay and sandy clay loam). The randomized completed block design (RCBD) was used for this research. After 2, 4 and 8 weeks of treatments, the sequential extraction procedure was done to determine cadmium concentration in WsEx (Water Soluble and Exchangeable), Sorb (EDTA extractable), MnOx (Manganese Oxides), Car (Carbonate), OM (Organic matter), AFeOx (Amorphous Iron Oxides), CFeOx (Crystaline Fe oxides) and Res (Residual) fractions. The results showed that 69.0 to 71.0% of the added Cd was removed within the WsEx, Sorb and MnOx fractions. Cadmium concentration in Sorb, OM and Res fraction was higher within clay soil while cadmium concentration within WsEx and Car fractions were higher within sandy clay loam soil. Adding P as monocalcium phosphate reduced cadmium concentration within WsEx and Sorb fractions while increased Car, OM and Res fractions. The presence of phosphorus reduces the concentration of Cd in those forms that are easily released into soil solution (WsEx and Sorb) from where they'll be absorbed by plants and thus decrease cadmium uptake by plants.

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Cadmium speciation as influenced by soil water content and zinc and the studies of kinetic modeling in two soils textural classes

Cited by 30 publications

References 31 publications

Nitrous oxide emissions from rice paddy: Impacts of rice straw and water management

Nitrous oxide emissions from rice paddy: Impacts of rice straw and water management

Geochemical Anomaly Characteristics of Cd in Soils around Abandoned Lime Mines: Evidence from Multiple Technical Methods

Effect of monocalcium phosphate on the concentration of cadmium chemical fractions in two calcareous soils in Iran

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