Simultaneous attenuation of phytoaccumulation of Cd and As in soil treated with inorganic and organic amendments

Yao, Aijun; Ju, Lin; Ling, Xiaodan; Liu, Chong; Wei, Xiange; Qiu, Hao; Tang, Yetao; Morel, Jean-Louis; Qiu, Rongliang; Li, Charlie; Wang, Shizhong

doi:10.1016/j.envpol.2019.04.073

Cited by 41 publications

(11 citation statements)

References 41 publications

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“…Fe-Si-Ca material (IS hereinafter) was bought from Guangdong Province Shaoguan Steel Group Company Limited. It is a slag-like synthetic material [26] (Table 2).…”

Section: Plant and Soil Amendmentsmentioning

confidence: 99%

Phytostabilization of Cd and Pb in Highly Polluted Farmland Soils Using Ramie and Amendments

Lan

Liu

et al. 2020

IJERPH

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In-situ remediation of heavy-metal-contaminated soil in farmland using phytostabilization combined with soil amendments is a low-cost and effective technology for soil pollution remediation. In this study, coconut shell biochar (CB, 0.1% and 0.5%), organic fertilizer (OF, 3.0%), and Fe-Si-Ca material (IS, 3.0%) were used to enhance the phytostabilization effect of ramie (Boehmeria nivea L.) on Cd and Pb in highly polluted soils collected at Dabaoshan (DB) and Yangshuo (YS) mine sites. Results showed that simultaneous application of CB, OF, and IS amendments (0.1% CB + 3.0% OF + 3.0% IS and 0.5% CB + 3.0% OF + 3.0% IS, DB-T5 and DB-T6) could significantly increase soil pH, reduce the concentrations of CaCl2-extractable Cd and Pb, and increase the contents of Ca, P, S, and Si in DB soil. Under these two treatments, the growth of ramie was significantly improved, its photosynthesis was enhanced, and its levels of Cd and Pb were reduced, in comparison with the control (DB-CK). After applying DB-T5 and DB-T6, the concentrations of Cd and Pb in roots were decreased by 97.7–100% and 64.6–77.9%, while in shoots they were decreased by up to 100% and 92.9–100%, respectively. In YS-T4 (0.5% CB + 3.0% OF), the concentrations of Cd and Pb in roots were decreased by 39.5% and 46.0%, and in shoots they were decreased by 44.7% and 88.3%. We posit that phytostabilization using ramie and amendments could reduce the Cd and Pb bioavailability in the soil mainly through rhizosphere immobilization and plant absorption. In summary, this study suggests that the use of tolerant plant ramie and simultaneous application of coconut shell biochar, organic fertilizer, and Fe-Si-Ca materials is an effective stabilization strategy that can reduce Cd and Pb availabilities in soil. Ultimately, this strategy may reduce the exposure risk of crops to heavy metal pollution in farmland.

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“…Fe-Si-Ca material (IS hereinafter) was bought from Guangdong Province Shaoguan Steel Group Company Limited. It is a slag-like synthetic material [26] (Table 2).…”

Section: Plant and Soil Amendmentsmentioning

confidence: 99%

Phytostabilization of Cd and Pb in Highly Polluted Farmland Soils Using Ramie and Amendments

Lan

Liu

et al. 2020

IJERPH

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“…Soil liming decreases its zeta potential and consequently increases soil pH [37]. As the soil pH increases, the cationic forms of Cd 2+ or Pb 2+ cause precipitation as an insoluble form of Cd(OH) 2 , CdCO 3 , or 2PbCO 3 •Pb(OH) 2 at the surface of the material, or in soil [13,38]. Although less reduction efficiency was observed with SM + FeO than with SM+L treatment for bioavailable Cd and Pb in soil, FeO also had a higher reduction efficiency than BA and SM (Table 4).…”

Section: The Effect Of Amendments On Reducing the Bioavailable Heavy ...mentioning

confidence: 99%

“…Although less reduction efficiency was observed with SM + FeO than with SM+L treatment for bioavailable Cd and Pb in soil, FeO also had a higher reduction efficiency than BA and SM (Table 4). Yao et al examined X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) analyses to verify the sorption mechanism of heavy metals with various sorbents, and concluded that the interaction between FeO and Cd or Pb in soil was affected more by a combination of multi-metal precipitation, or specific chemisorption, than by organic chelation [13]. Thus, we could assume that the ionic form of Cd can precipitate with FeO and form CdFe 2 O 4 under alkaline conditions.…”

Section: The Effect Of Amendments On Reducing the Bioavailable Heavy ...mentioning

confidence: 99%

“…Various remediation techniques have been applied to reduce both heavy metal concentrations and GHG emissions in agricultural soil. The application of amendments is a popular technique used to immobilize bioavailable heavy metals and reduce GHG emissions in soil because of its high efficiency, low cost, and ease of use [10][11][12][13]. The most commonly used amendments include organic materials (biochar, compost, and plant residuals), minerals (zeolite), and pH adjusters (lime, steel slag, and coal ash) [2,3,14,15].…”

Section: Introductionmentioning

confidence: 99%

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The Synergetic Effect of Soil Amendments on Reducing Bioavailable Heavy Metals and Greenhouse Gas Emissions from Upland Soil

Hong

Kim

et al. 2022

Agriculture

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Heavy metal pollution and greenhouse gas (GHG) emissions from soil are two major detrimental sources in the agriculture environment because of concerns about crop safety and global warming. Applying amendments on site is a common technique used for heavy metal remediation and the reduction in GHG emissions. This study aims to evaluate the effect of different amendments on the reduction in both bioavailable heavy metals and GHG emissions from soil. Four different amendments, namely bottom ash (BA), sintered material (SM), sintered material combined with lime (SM + L), and FeO (SM + FeO) were applied to upland fields, followed by maize (Zea mays L.) cultivation from April to October. Subsequently, SM + FeO treatment demonstrated the highest bioavailability reduction efficiency for As at 79.1%, and SM + L treatment had a high efficiency for the reduction in Cd and Pb by 64.6% and 41.4%, respectively. SM + FeO treatment also reduced bioaccumulated As and Pb in maize grain by 59.3% and 66.2%, respectively. Furthermore, SM + FeO treatment demonstrated the highest reduction efficiency for cumulative N2O emissions by 70.7%, compared to the control soil. Among the four different amendments, the efficiency of heavy metal and GHG emission reduction was in the following order: SM + FeO > SM + L > SM > BA. Overall, SM combined with FeO is a promising amendment for reducing and managing both heavy metal pollution and GHG emissions in soil.

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“…Heavy metal pollution in soil is a concern because of its adverse effects on ecosystems and human health [ 1 , 2 , 3 ]. Among the heavy metals, Cd and Pb are considered major soil pollutants, owing to their severe toxicity and because they result in the deterioration of food crops [ 4 , 5 , 6 ]. A high concentration of Cd in the human body can cause interference for calcium metabolism, occurring hypercalciuria, and kidney failure [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Bottom Ash Modification via Sintering Process for Its Use as a Potential Heavy Metal Adsorbent: Sorption Kinetics and Mechanism

Hong

Kim

et al. 2021

Materials

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Heavy metal pollution in the environment is a critical issue, engendering ecosystem deterioration and adverse effects on human health. The main objective of this study was to evaluate heavy metal adsorbents by modifying industrial byproducts. The bottom ash was sintered and evaluated for Cd and Pb sorption. Three adsorbents (bottom ash, sintered bottom ash (SBA), and SBA mixed with microorganisms (SBMA)) were tested to evaluate the sorption kinetics and mechanism using a lab-scale batch experiment. The results showed that the highest sorption efficiency was observed for Cd (98.16%) and Pb (98.41%) with 10% SBA. The pseudo-second-order kinetic model (R2 > 0.99) represented the sorption kinetics better than the pseudo-first-order kinetic model for the SBA and SBMA, indicating that chemical precipitation could be the dominant sorption mechanism. This result is supported by X-ray photoelectron spectroscopy analysis, demonstrating that -OH, -CO3, -O, and -S complexation was formed at the surface of the sintered materials as Cd(OH)2 and CdCO3 for Cd and PbO, and PbS for Pb. Overall, SBA could be utilized for heavy metal sorption. Further research is necessary to enhance the sorption capacity and longevity of modified industrial byproducts.

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Simultaneous attenuation of phytoaccumulation of Cd and As in soil treated with inorganic and organic amendments

Cited by 41 publications

References 41 publications

Phytostabilization of Cd and Pb in Highly Polluted Farmland Soils Using Ramie and Amendments

Phytostabilization of Cd and Pb in Highly Polluted Farmland Soils Using Ramie and Amendments

The Synergetic Effect of Soil Amendments on Reducing Bioavailable Heavy Metals and Greenhouse Gas Emissions from Upland Soil

Bottom Ash Modification via Sintering Process for Its Use as a Potential Heavy Metal Adsorbent: Sorption Kinetics and Mechanism

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