The removal of Cu, Ni, and Zn in industrial soil by washing with EDTA-organic acids

Cheng, Shuailong; Lin, Qintie; Wang, Yupeng; Luo, Haoyu; Huang, Zhuofan; Fu, Hengyi; Chen, Hengrui; Xiao, Rongbo

doi:10.1016/j.arabjc.2020.02.015

Cited by 78 publications

(34 citation statements)

References 48 publications

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“…The authors have found that application of different biosurfactants as WAs (saponin, tannic acid, rhamnolipids) significantly increased the stability of Cd, Cu, Ni, Pb and Zn (based on the IR) in spiked soil. Similar observations were made by Cheng et al 52 , who noticed an increase in the IR index in soils after washing with a mixture of EDTA and organic acids. The increase was associated with the effective removal of Cu, Ni, and Zn, mainly from F1 fraction, and increasing the share of the most stable fractions, which were removed less efficiently.…”

Section: Suitability Of Different Environmental Indices For Assessmensupporting

confidence: 89%

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Suitability of environmental indices in assessment of soil remediation with conventional and next generation washing agents

Klik

Gusiatin

Kulikowska

2020

Sci Rep

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Remediation of soils contaminated with metal must ensure high efficiency of metals removal, reduce bioavailability of residual metals and decrease ecological risk. Thus, for comprehensive environmental soil quality assessment, different indices must be used. In this study, suitability of 8 indices was used for soil highly contaminated with Cu (7874.5 mg kg−1), moderately with Pb (1414.3 mg kg−1) and low with Zn (566.1 mg kg−1), washed in batch and dynamic conditions with both conventional and next-generation washing agents. The following indices were used: modified contamination factor (mCf), modified contamination factor degree (mCdeg), mobility factor (MF), reduced partition index (IR), potential ecological risk factor (Er,Z), modified potential ecological risk factor (Er,m), potential ecological risk index (RIZ) and modified ecological risk index (RIm). For mCf,mCdeg and IR own classification scale was proposed. It was proven that most useful indices for assessment of soil pollution with metals were mCf and mCdeg. The mCf together with the IR allow to simultaneous assessment of soil pollution and stability for individual metals. These indices were appropriate for soil contaminated with different concentrations of metals, washed under both hydrodynamic conditions using various washing agents and different effectiveness of metals removal. Thus, they may be considered as most useful for evaluation of remediation method, feasibility of washing agent and assessing soil quality after washing.

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Section: Suitability Of Different Environmental Indices For Assessmensupporting

confidence: 89%

“…73.1 and 70.6%, respectively. Cheng et al 52 found high MFs for Cu, Ni and Zn, i.e. 68%, 64% and 53%, respectively in soil from the electroplating factory (Dongguan City, China).…”

Section: Suitability Of Different Environmental Indices For Assessmenmentioning

confidence: 99%

Suitability of environmental indices in assessment of soil remediation with conventional and next generation washing agents

Klik

Gusiatin

Kulikowska

2020

Sci Rep

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“…O citrato age como agente quelante biológico para absorção de metais no sistema solo-planta, podendo agir como facilitador no transporte de íons divalentes como Fe 2+ , Cu 2+ , Zn 2+ e Mn 2+ . 11,60 A identificação de três AO, a saber, cítrico, málico e aspártico em folhas de azevém anual pode ser uma possível explicação da espécie ser capaz de acumular em sua estrutura teores mais elevados de metais do que as exigências nutricionais e inclusive de elementos tóxicos, como o Cr. [55][56][57] Em termos de Kest, o Pb teoricamente deveria ter sido absorvido em maior quantidade pela planta, ao invés do Cr, que forma complexos estáveis apenas com o ácido acético e oxálico, que não foram identificados na espécie, conforme Tabela 10.…”

Section: Determinação Dos Ao Em Folhas De Azevém Anualunclassified

Physiological Responses and Absorption of Metals in Itallian Ryegrass Leaves Cultivated With Sewage Sludge and Its Relationships With Organic Acids

Fonseca¹,

Oliveira²,

Passos³

et al. 2020

Rev. Virtual Quim.

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In this work, the physiological responses and leaf uptake of Cu, Cr, Fe, Pb and Zn were evaluated during the initial growth of Italian ryegrass with addition of urban sewage sludge (LE) and its relationship with the foliar levels of organic acids (OA) obtained by a simple extraction method, using only water as solvent and with less extraction time. The minimum and maximum contents (mg kg-1) found in Italian ryegrass leaves after 14 days in contact with the sludge (Cu: 12.6-21.2; Cr: 26.9-130; Fe: 395.9-6171 and Zn: 138-1190) indicated the bioaccumulation potential of the species. Only Pb concentration was below the limit of detection (LD) and quantification (LQ). Citric acid (1,966 mg g-1) and malic acid (0.957 mg g-1) were successfully quantified, along with positively identified peaks of aspartic acid, indicating that those AO might be related to the nutritional behavior of the species, particularly in the regulation of the uptake of elements harmful to metabolism. Based on the stability constants of malic acid for the formation of organo-metallic complexes (Kest: 3.40 for Cu, 2.75 for Pb and 2.00 for Zn), in addition to interaction studies of carboxyl groups with metal ions, especially the citrate group, it can be suggested that the exudation of citric, malic and aspartic acids promotes uptake and retention of metals, thus facilitating the adaptation of the species in anthropic systems. It is concluded that Italian ryegrass responds positively to the application of LE, however accumulating metals at levels potentially harmful. Neste trabalho foi avaliado as respostas fisiológicas e a absorção foliar de Cu, Cr, Fe, Pb e Zn durante o cultivo inicial do azevém anual com adição de lodo de esgoto (LE) e suas relações com os teores foliares de ácidos orgânicos de baixo massa molecular (AO), obtidos por um método de extração simples, utilizando apenas água como solvente e com menor tempo de extração. Os teores mínimo e máximo (mg kg-1) encontrados em folhas de azevém anual após 14 dias em contato com o lodo (Cu: 12,6-21,2; Cr: 26,9-130; Fe: 395,9-6171 e Zn: 138-1190) indicaram o potencial de bioacumulação da espécie. Apenas a concentração de Pb ficou abaixo do limite de detecção (LD) e quantificação (LQ). Foram quantificados os ácido cítrico (1.966 mg g-1) e málico (0,957 mg g-1) nas folhas e identificados picos de ácido aspártico, indicando que os mesmos podem estar relacionados ao comportamento nutricional da espécie, particularmente na promoção ou inibição da absorção de elementos ao metabolismo. Com base nas constantes de estabilidade do ácido málico para a formação de complexos organo-metálicos (Kest: 3,40 para o Cu; 2,75 para o Pb e 2,00 para o Zn), além de estudos de interação de grupos carboxilados com íons metálicos, em especial o grupo citrato, pode-se sugerir que a exsudação dos ácidos cítrico, málico e aspártico promove a absorção e retenção de metais e facilita a adaptação da espécie em sistemas antropizados.

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“…Acids washing leads to decreased soil productivity and adverse changes in the chemical and physical structures of soil due to mineral dissolution (Reed et al, 1996). Chelating agents are regarded as more attractive alternatives to acids because they can form strong metal-ligand complexes and are thus highly effective in remediating heavy metal contaminated soil (Kim and Ong, 1998;Wei et al, 2011 andCheng et al, 2020). Hence this study is aimed at estimating the labile fractions of Mn and Pb from dump sites by comparing EDTA and Citrate extractions.…”

Section: Introductionmentioning

confidence: 99%

COMPARATIVE EXTRACTION OF Mn AND Pb USING EDTA AND CITRATE TO ASSESS THEIR MOBILITY FROM TWO DUMPSITES IN ZARIA METROPOLIS

Samuel-Okey

Ajibola²

2021

FJS

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An estimate of the labile fractions of different trace metals (Mn and Pb) in soil from two dumpsites with complexing agents (EDTA and Citrate) was carried out. The dump sites used for this study receives both commercial and domestic wastes. Physiochemical parameters and the total metal concentrations of the soil was determined, extraction with EDTA and Citrate were used to study the potential metal extraction capacity at different time intervals and the extraction rates of metal released as a function of time (between 0 to 24 hr). The relatively low levels of silt, clay, organic matter and CEC indicates high permeability, hence leachability of heavy metals in the soil and suggest that it might be amenable to remediation by soil washing. The removal efficiency showed that complete solubilization of metals did not occur, as not all the complexing agents added to the soil, was bound to the target metal. This might be due to the presence of other ions such as Ca and Fe which form relatively high stable complexes. EDTA yielded much more than citrate for both metals under consideration. Lead was extracted more than Manganese, which suggest Lead has been more labile in solution than Manganese and EDTA as a stronger complexing agent than citrate. The level of extraction was constant for the period of 60 min to 720 min after which it increased considerably

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The removal of Cu, Ni, and Zn in industrial soil by washing with EDTA-organic acids

Cited by 78 publications

References 48 publications

Suitability of environmental indices in assessment of soil remediation with conventional and next generation washing agents

Suitability of environmental indices in assessment of soil remediation with conventional and next generation washing agents

Physiological Responses and Absorption of Metals in Itallian Ryegrass Leaves Cultivated With Sewage Sludge and Its Relationships With Organic Acids

COMPARATIVE EXTRACTION OF Mn AND Pb USING EDTA AND CITRATE TO ASSESS THEIR MOBILITY FROM TWO DUMPSITES IN ZARIA METROPOLIS

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