Influence of different phosphates on adsorption and leaching of Cu and Zn in red soil

Li, Zhongwu; Huang, Bin; Chen, Guiqiu; Xiong, Weiping; Nie, Xiaodong; Ma, Wei; Zeng, Guangming

doi:10.1016/s1003-6326(16)64142-0

Cited by 19 publications

(4 citation statements)

References 48 publications

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“…The total Pb content in samples was measured by inductively coupled plasma mass spectrometry (ICP-MS) aer digestion with HF-HNO 3 -HClO 4 . 35 The two contaminated soils in this study were collected from Wuhan, Hubei Province, China. Roots and rocks were removed and the samples were treated as previously described.…”

Section: Methodsmentioning

confidence: 99%

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Remediation of iron oxide bound Pb and Pb-contaminated soils using a combination of acid washing agents and l-ascorbic acid

Yang

et al. 2020

RSC Adv.

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Section: Methodsmentioning

confidence: 99%

“…The residual fraction was digested with a mixture of HNO 3 -HF-HClO 4 . 35 Aer each step, the supernatant was collected and the content of Pb was determined by ICP-MS.…”

Section: Tessier Sequential Extractionmentioning

confidence: 99%

Remediation of iron oxide bound Pb and Pb-contaminated soils using a combination of acid washing agents and l-ascorbic acid

Yang

et al. 2020

RSC Adv.

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“…In a study by Li et al (2016) in red soil in the presence of different phosphates, the authors observed that the concentration of Cu in leachates continuously increased during the whole leaching process for 10 days, while the concentration of Zn increased firstly and then decreased. The pH of the leachate increased continuously with the leaching time.…”

Section: Leaching Of Copper and Zincmentioning

confidence: 99%

Sorption and Leaching of Metals in the Soil Due to Application of Dissolved Organic Matter

Gonçalves

Silva

Bettin

et al. 2020

RICA

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Agriculture is one of the most important nonpoint sources of soil contamination by heavy metals, and the presence of dissolved organic matter (DOM) in soil can influence the movement of metals. The objective of this research was to evaluate the effect of DOM on the sorption and leaching of copper (Cu) and zinc (Zn) in the soil. Clay soil samples collected at a 0-30 cm depth were used to conduct the experiments, and DOM was extracted from dairy cow manure. Soil tests to evaluaye sorption were carried out in the batch method, two treatments being considered: without the presence of DOM (control) and with the presence of DOM, in different concentrations of Cu and Zn. Experimental results were adjusted to models of the of Langmuir and Freundlich isotherms. In the leaching experiment, columns were filled with soil previously contaminated with Cu and Zn and the distilled water was passed through them; afterwards, the leachate was collected. The sorption of copper and zinc in the soil was greater in the presence of DOM, possibly by the availability of sorption sites and interactions of metals with the DOM structure. The leaching of copper in soil was facilitated by the application of DOM, which can enable large-scale contamination of groundwater. No differences were found in zinc leaching considering water or DOM, however this metal has high mobility in the soil under study. Palabras clave: metales pesados, transporte de contaminantes, isotermas, estiércol bovino RESUMEN La agricultura es una de las principales fuentes no puntuales de contaminación del suelo por metales pesados, y la presencia de materia orgánica disuelta (MOD) en el suelo puede influir en el movimiento de metales. El objetivo de este trabajo fue evaluar el efecto de la MOD en la sorción y lixiviación de cobre (Cu) y zinc (Zn) en el suelo. Para

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“…Natural cases of soil contamination are unusual but can have severe effects, like, for example, forest fires that originate dusts rich in heavy metals, which deposit on the soil [3]. Heavy metals cannot be degraded and tend to contaminate the water and food chain, since, besides compromising the soil quality, they can leachate and threaten the quality of vegetables and cattle, and ultimately human health [4,5].…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Heavy Metals in Contaminated Soils—Performance Assessment in Conditions Similar to a Real Scenario

et al. 2020

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Soil “health” is becoming an increasing concern of modern societies, namely, at the European level, considering its importance to the fields of food, clean water, biodiversity, and even climate change control. On the other hand, human activities are contributing more and more to induce contamination in soils, especially in industrialized societies. This experimental work studies different additives (carbon nanotubes, clay, and Portland cement) with the aim to evaluate their effect on heavy metals, HMs (lead, cooper, nickel, and zinc) immobilization in a contaminated soil in conditions similar to a real scenario. Suspension adsorption tests (fluid-like condition) were performed aiming to supply preliminary information about the adsorption capacity of the soil towards the different HMs tested, while percolation tests (solid-like conditions) were performed aiming to evaluate the HMs immobilization by different additives in conditions similar to a real situation of soil contamination. Results showed that soil particles alone were able to retain considerable amounts of HMs (especially Pb and Cu) which is linked to their fine grain size and the soil high organic matter content. In conditions of good dispersion of the additives, addition of carbon nanotubes or clay can rise the HMs adsorption, except in the case of Zn2+ due to its low electronegativity and high mobility. Moreover, the addition of cement to the soil showed a high capacity to immobilize the HMs which is due to the chemical fixation of the HMs to binder hydration products. In this case, HMs immobilization comes associated with a soil stabilization strategy. The results allow to conclude that the additives, carbon nanotubes and clay, have the potential to minimize HMs mobility in contaminated soils and can be a valid alternative to the usual additive, Portland cement, when tested in conditions similar to a real on-site situation, if the objective is not to induce also soil stabilization, for instance, to enable its use for construction purposes. The results obtained can help designers and decision-makers in the choice of the best materials to remediate HMs contaminated soils.

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Influence of different phosphates on adsorption and leaching of Cu and Zn in red soil

Cited by 19 publications

References 48 publications

Remediation of iron oxide bound Pb and Pb-contaminated soils using a combination of acid washing agents and l-ascorbic acid

Remediation of iron oxide bound Pb and Pb-contaminated soils using a combination of acid washing agents and l-ascorbic acid

Sorption and Leaching of Metals in the Soil Due to Application of Dissolved Organic Matter

Immobilization of Heavy Metals in Contaminated Soils—Performance Assessment in Conditions Similar to a Real Scenario

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