Smooth Vetch (Vicia villosa var.) Coupled with Ball-Milled Composite Mineral Derived from Shell Powder and Phosphate Rock for Remediation of Cadmium-Polluted Farmland: Insights into Synergetic Mechanisms

ACS ES&T Engineering, Год журнала: 2024, Номер 4(8), С. 2054 - 2067

Опубликована: Июль 16, 2024

Herein, a ball-milled composite mineral derived from shell powder and phosphate rock (BSPR) was innovatively coupled with smooth vetch (SV) planting to remediate Cd-polluted soil. The results showed that BSPR SV could reduce the bioavailability of Cd in soil by 68.1%, which 2.2 3.4 times those (31.1%) (20.0%) alone, respectively. outstanding passivation performance confirmed be due synergistic effect SV. Specifically, employment not only increased biomass but also promoted its decomposition, directly led conversion into more humic acid (HA). Under action HA, calcium phosphorus were released combined form stable compounds (e.g., Cd3(PO4)2, Cd5(PO4)3Cl, CdnCa5–n(PO4)3OH). Amazingly, excellent synergetic on improvement, content pepper fruit decreased 38.2% (6.3 SV), fresh weight Ca enhanced 28.2% 43.4% (6.7 22.8 SV, respectively). Overall, this study provided novel strategy, i.e., green manure mineral, for simultaneous remediation Cd-contaminated farmland enhancement pepper's yield quality, thus achieving "killing three birds one stone".

Язык: Английский

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Biochar co-pyrolyzed from peanut shells and maize straw improved soil biochemical properties, rice yield, and reduced cadmium mobilization and accumulation by rice: Biogeochemical investigations

Journal of Hazardous Materials, Год журнала: 2024, Номер 466, С. 133486 - 133486

Опубликована: Янв. 17, 2024

Biochar is an eco-friendly amendment for the remediation of soils contaminated with cadmium (Cd). However, little attention has been paid to influence and underlying mechanisms co-pyrolyzed biochar on bioavailability uptake Cd in paddy soils. The current study explored effects from peanut shells (P) maize straw (M) at different mixing ratios (1:0, 1:1, 1:2, 1:3, 0:1, 2:1 3:1, w/w), bacterial community fractionation soil, its by rice plant. addition, particularly P1M3 (P/M 1:3), significantly elevated soil pH cation exchange capacity, transferred mobile residual fraction, reduced availability rhizosphere soil. application decreased concentration tissues (root, stem, leaf, grain) 30.0%- 49.4%, compared control. Also, enhanced microbial diversity indices relative abundance iron-oxidizing bacteria Moreover, was more effective promoting formation iron plaque, increasing sequestration plaque than other treatments. Consequently, highest yield lowest accumulation were observed following application. This revealed feasibility applying facilitating Cd.

Язык: Английский

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Straw removal reduces Cd availability and rice Cd accumulation in Cd-contaminated paddy soil: Cd fraction, soil microorganism structure and porewater DOC and Cd

Journal of Hazardous Materials, Год журнала: 2024, Номер 476, С. 135189 - 135189

Опубликована: Июль 14, 2024

Язык: Английский

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Green manuring reduces cadmium accumulation in rice: Roles of iron plaque and dissolved organic matter

Environmental Research, Год журнала: 2024, Номер 251, С. 118719 - 118719

Опубликована: Март 14, 2024

Язык: Английский

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Soil Cd bioavailability response characteristics to microbes in paddy fields with co-incorporation of milk vetch, rice straw and amendments

The Science of The Total Environment, Год журнала: 2024, Номер 935, С. 173306 - 173306

Опубликована: Май 21, 2024

Язык: Английский

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High-efficiency remediation of Hg and Cd co-contaminated paddy soils by Fe–Mn oxide modified biochar and its microbial community responses

Biochar, Год журнала: 2024, Номер 6(1)

Опубликована: Июнь 5, 2024

Abstract Fe–Mn oxide modified biochar (FMBC) was produced to explore its potential for remediation of Hg–Cd contaminated paddy soils. The results showed that the application FMBC decreased contents bioavailable Hg and Cd by 41.49–81.85% 19.47–33.02% in contrast CK, while amount labile organic carbon (C) fractions C-pool management index (CPMI) increased under BC treated soils, indicating enhancement soil C storage nutrient cycling function. Dry weight different parts Oryza sativa L. enhanced after addition FMBC, Fe Mn root iron–manganese plaques (IMP) were 1.46–2.06 6.72–19.35 times higher than those control groups. brown rice treatments significantly reduced 18.32–71.16% 59.52–72.11% compared with control. altered composition metabolism function bacterial communities, especially increasing abundance keystone phyla, including Firmicutes , Proteobacteria Actinobacteria. Partial least squares path modelling (PLSPM) revealed Na 2 S O 3 –Hg, DTPA–Cd IMP key indicators affecting accumulation grains. These demonstrate simultaneous value combined pollution restoring fertility biological productivity. Graphical

Язык: Английский

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The dissolved organic matter from the co-decomposition of Chinese milk vetch and rice straw induces the strengthening of Cd remediation by Fe-modified biochar

Biochar, Год журнала: 2024, Номер 6(1)

Опубликована: Март 25, 2024

Abstract Fe-modified biochar (FB) and co-using Chinese milk vetch rice straw (MR) are two effective ways for mitigating the cadmium (Cd) contamination in paddy fields southern China. Nevertheless, effects of FB combined with MR on Cd passivation mechanism remain unclear. In current study, strengthening induced by were found mechanisms extracted dissolved organic matter (DOM) from co-decomposition alleviation investigated through pot experiment adsorption experiment. Pot demonstrated that co-incorporating decreased available 23.1% increased iron plaque concentration 11.8%, resulting a 34.7% reduction concentrations brown compared addition FB. Furthermore, improved nutrients soil. The molecular characteristics DOM derived decomposition (DOM-MR) analyzed fluorescence excitation emission matrix spectroscopy-parallel factor analysis (EEM-PARAFAC) Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS). Results showed lignin/carboxylic-rich alicyclic molecules protein/amino sugar main compounds, potentially involved binding. Adsorption experiments revealed DOM-MR functional groups, specific surface area, negative charges FB, inducing both physisorption chemisorption Cd(II). maximum capacity after adding was 634 mg g −1 , 1.30 times without DOM-MR. This study suggested MR, could serve as an innovative practice simultaneous remediation soil fertilization Cd-polluted fields. It also provided valuable insights basis optimize performances enhance its potential immobilization. Graphical

Язык: Английский

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Magnetic biochar-supported layered double hydroxide for simultaneous remediation of As and Cd in soil: Effectiveness, retention durability, and insight into a new immobilization mechanism

Journal of Cleaner Production, Год журнала: 2023, Номер 434, С. 140136 - 140136

Опубликована: Дек. 16, 2023

Язык: Английский

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Quantification of the effect of biochar application on heavy metals in paddy systems: Impact, mechanisms and future prospects

The Science of The Total Environment, Год журнала: 2023, Номер 912, С. 168874 - 168874

Опубликована: Ноя. 28, 2023

Язык: Английский

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Risk assessment of toxic and hazardous metals in paddy agroecosystem by biochar-for bio-membrane applications

Chemosphere, Год журнала: 2023, Номер 340, С. 139719 - 139719

Опубликована: Авг. 5, 2023

Язык: Английский

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