Effects of fly ash and steel slag on cadmium and arsenic accumulation in rice grains and soil health: A field study over four crop seasons in Guangdong, China

Chi, Yihan; Peng, Lei; Tam, Nora Fung-Yee; Lin, Qinru; Liang, Haowen; Ye, Zhihong

doi:10.1016/j.geoderma.2022.115879

Cited by 26 publications

(5 citation statements)

References 64 publications

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“…The minimum detectable activity (MDA in Bqkg -1 ) at 95% confidence level was calculated by [41]: (14) where ε(E) is the detector efficiency and Iγ is the intensity of the interested gamma ray energy E, t is the measurement time (s), m is the mass of the sample (kg), and DL is the detection limit given by [41]:…”

Section: Radioactivity Analysismentioning

confidence: 99%

“…Heavy metals accumulated in polluted soil can cause crop pollution [10,11]. Furthermore, due to crop environment characteristics such as air, water, and soil, different crops have a variable capability to accumulate certain heavy metals in soil, resulting in varying levels of heavy metal accumulation [12][13][14][15]. Because industrial contamination of agricultural lands and forests is becoming a serious ecological issue in the world, determining metal concentrations, particularly toxic ones in plants, is of particular importance.…”

Section: Introductionmentioning

confidence: 99%

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Accumulation of Heavy Metals and Determination of Natural Radioactivity in the Soil-Thyme System in Omerli, Istanbul: Assessment of Ecological and Health Risk

Esen

Algouti²,

Haciyakupoglu

et al. 2024

Gazi University Journal of Science

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Transfer of metals from soil to plant is an important pathway of human exposure to environmental contaminants. In this study accumulation of different metals was investigated and natural radioactivity levels were measured in the soil–thyme system. Results showed that the concentration of Br, Cr, Mn, Ni, and Pb in the soil is higher than the World average value, and P, Ca, and Zn have higher transfer factors. The natural radioactivity level in the soils is similar to the World average. For thyme samples the average values for 226Ra, 232Th and 40K were found as 22.7 Bqkg-1, 61.3 Bqkg-1 and 722 Bqkg-1, respectively. The health and ecological risks of soil were evaluated. The total hazard index of the child was 1.453 on average, greater than that of the adult (0.175), primarily due to the contribution of Cr. Ecological risk assessed based on various indices indicated that Pb and Ni show contamination risk to the environment. Our study confirms that metals in soil influence metals in plants, and those metal interactions are critical for pollution risk control.

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Section: Radioactivity Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Accumulation of Heavy Metals and Determination of Natural Radioactivity in the Soil-Thyme System in Omerli, Istanbul: Assessment of Ecological and Health Risk

Esen

Algouti²,

Haciyakupoglu

et al. 2024

Gazi University Journal of Science

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“…In addition to water pollution, widespread heavy metal contamination of agricultural soils also poses a serious threat to global food safety and security . For example, according to China’s 2014 National Soil Survey, 19.4% of cropland contains hazardous contaminants at levels above environmental quality standards, with cadmium (Cd) and arsenic (As) being the most prevalent contaminants in rice crops. , Therefore, it is imperative to explore enforceable solutions for the remediation of water and soil contaminated by heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Multiple Anchor Sites of CaFe-LDH Enhanced the Capture Capacity to Cadmium, Arsenite, and Lead Simultaneously in Contaminated Water/Soil: Scalable Synthesis, Mechanism, and Validation

Liu,

Yang,

et al. 2023

ACS EST Eng.

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Heavy metal pollution is a global challenge to human health and ecosystems, and various strategies have been developed to eliminate these hazardous pollutants. However, due to the contrasting biogeochemical behavior of cadmium (Cd) and arsenic (As), the efficient and simultaneous removal of these substances is still a major challenge. Here, we demonstrated that the synthesized CaFe-layered double hydroxide (CaFe-LDH) can provide various active sites for the simultaneous removal of Cd 2+ , AsO 2 − , and Pb 2+ with removal efficiencies of >95% in 5 min and >99% within 60 min. The combination of energy-dispersive Xray elements and structural characterizations indicated that Cd 2+ was anchored in the lattice of the layer through isomorphous substitution with Ca, AsO 2 − was trapped by amorphous FeOOH, while Pb 2+ was removed via the precipitation route. At the same time, we provide a scalable (100 g/batch in the lab and 500 kg/ batch in the pilot plant) and effective strategy to produce CaFe-LDH using only Ca(OH) 2 and FeCl 3 as building blocks. Moreover, hydroponics and potting experiments have shown that CaFe-LDH can not only significantly suppress the migration of the above-mentioned heavy metals from the soil into plants (the reduction efficiencies for Cd 2+ , AsO 2 − , and Pb 2+ are up to 98.7, 99.4, and 94.9%, respectively) but also have a positive effect on plant growth. Therefore, our work opens the possibility of scalable production of CaFe-LDH and offers a new perspective for the simultaneous removal of Cd 2+ , AsO 2 − , and Pb 2+ from contaminated wastewater and soil.

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“…However, there are still potential environmental risks in landfills [7][8][9]. Fly ash contains a variety of heavy metals, and is therefore considered a hazardous waste, with greater environmental hazards [10][11][12]. The heavy metals found in fly ash mainly include Zn, Pb, Cu, Cd, Cr, As, Hg, and Ni [13,14].…”

Section: Introductionmentioning

confidence: 99%

Resource Disposal and Products of Fly Ash from Domestic Waste Incineration in Zhejiang Province, China: Migration and Change of Hazardous Heavy Metals

Pan,

Li,

Gong

et al. 2023

Sustainability

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At present, domestic waste incineration fly ash is classified as hazardous waste. The technical hurdle of fly ash detoxification and resource usage must be overcome in order to effectively utilize fly ash resources. In this study, we investigate the migration and transformation of heavy metal contaminants in the course of utilizing domestic waste incineration fly ash resources through the technology pathway of low-temperature pyrolysis, cyclic rinsing, and evaporation crystallization. Firstly, a comparative analysis was conducted on the fly ash (FA), pyrolysis ash (PA), and water-washing ash (WA) resulting from domestic waste incineration, revealing 24 types of metals, 3 types of non-metals, and 8 types of oxides. We observed the variations in heavy metal concentrations as well as the acidity and alkalinity in three types of ash resulting from the regenerated salt (RS) and incineration processes. Moreover, we analyzed the changes in heavy metal levels and acidity and alkalinity of treated saline water (TSW) and industrial brine (IB), which originate from the fly ash treatment process. The study’s results have confirmed that the heavy metal content in RS was below the detection limit following resource treatment. In addition, the regenerated salt product is determined to be a CaO-SiO2-Al2O3-Fe2O3 system, which enables the utilization of fly ash as a valuable resource. Notably, there were significant changes observed in heavy metal content in TSW and IB. Continued attention needs to be paid to the potential risk of environmental contamination from heavy metals and dioxins in FA infiltration. This research will prove beneficial in assessing resource utilization potential of products subjected to environmentally sound incineration fly ash treatment.

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Effects of fly ash and steel slag on cadmium and arsenic accumulation in rice grains and soil health: A field study over four crop seasons in Guangdong, China

Cited by 26 publications

References 64 publications

Accumulation of Heavy Metals and Determination of Natural Radioactivity in the Soil-Thyme System in Omerli, Istanbul: Assessment of Ecological and Health Risk

Accumulation of Heavy Metals and Determination of Natural Radioactivity in the Soil-Thyme System in Omerli, Istanbul: Assessment of Ecological and Health Risk

Multiple Anchor Sites of CaFe-LDH Enhanced the Capture Capacity to Cadmium, Arsenite, and Lead Simultaneously in Contaminated Water/Soil: Scalable Synthesis, Mechanism, and Validation

Resource Disposal and Products of Fly Ash from Domestic Waste Incineration in Zhejiang Province, China: Migration and Change of Hazardous Heavy Metals

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