Polyaspartate extraction of cadmium ions from contaminated soil: Evaluation and optimization using central composite design

Mu’azu, Nuhu Dalhat; Haladu, Shamsuddeen A.; Jarrah, Nabeel; Zubair, Mukarram; Essa, Mohammed H.; Ali, Shaikh A.

doi:10.1016/j.jhazmat.2017.08.013

Cited by 41 publications

(16 citation statements)

References 44 publications

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“…Heavy metals-polluted soil is one of the pervasive environmental issues worldwide, as caused by many anthropogenic activities including mining and smelting, waste disposition, and pesticide and fertilizer application (Wiggenhauser et al, 2016;Beiyuan et al, 2017a;Mu Azu et al, 2018). There is an imperative need to restore contaminated soils, among others due to the environmental and health implications induced by the presence of heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Effect of soil washing with biodegradable chelators on the toxicity of residual metals and soil biological properties

Wang

Zhang

Zhong

et al. 2018

Science of The Total Environment

105

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Soil washing with chelators is a promising and efficient method of remediating metals-contaminated soils. However, the toxicity of residual metals and the effects on soil microbial properties have remained largely unknown after washing. In this study, we employed four biodegradable chelators for removal of metals from contaminated soils: iminodisuccinic acid (ISA), glutamate-N,N-diacetic acid (GLDA), glucomonocarbonic acid (GCA), and polyaspartic acid (PASP). The maximum removal efficiencies for Cd, Pb, and Zn of 85, 55, and 64% and 45, 53, and 32% were achieved from farmland soil and mine soil using biodegradable chelators, respectively. It was found that the capacity of ISA and GLDA to reduce the labile fraction of Cd, Pb, and Zn was similar to that of the conventional non-biodegradable chelator ethylenediaminetetraacetic acid (EDTA). The leachability, mobility, and bioaccessibility of residual metals after washing decreased notably in comparison to the original soils, thus mitigating the estimated environmental and human health risks. Soil β-glucosidase activity, urease activity, acid phosphatase activity, microbial biomass nitrogen, and microbial biomass phosphorus decreased in the treated soils. However, compared with EDTA treatment, soil enzyme activities distinctly increased by 5-94% and overall microbial biomass slightly improved in the remediated soils, which would facilitate reuse of the washed soils. Based on soil toxicity tests that employed wheat seed germination as the endpoint of assessment, the washed soils exhibited only slight effects especially after ISA and GLDA treatments, following high-efficiency metal removal. Hence, ISA and GLDA appear to possess the greatest potential to rehabilitate polluted soils with limited toxicity remaining.

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Section: Introductionmentioning

confidence: 99%

Effect of soil washing with biodegradable chelators on the toxicity of residual metals and soil biological properties

Wang

Zhang

Zhong

et al. 2018

Science of The Total Environment

105

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“…Cadmium (Cd), lead (Pb), and zinc (Zn) are nonebiodegradable PTEs that are extremely persistent in soil (Alqadami et al, 2018). Much attention is being paid to soil Cd, Pb, and Zn because they are toxic, carcinogenic, and teratogenic (Zhou et al, 2018;Mu'azu et al, 2018). The development of costeeffective and environmentally benign techniques is regarded as a viable and ecologically sustainable approach for remediation PTEsecontaminated soil.…”

Section: Introductionmentioning

confidence: 99%

“…One of the most prevalent chelators is ethylenediaminetetraacetic acid (EDTA). It is frequently used for removing PTEs with soil washing (Golmaei et al, 2018;Sawai et al, 2017) but has been criticized because of its poor biodegradability and its persistence in soil (Mu'azu et al, 2018;Wang et al, 2016). [S,S]eethylenediaminedisuccinic acid (EDDS) has been proposed as an environmentallyefriendly substitute for EDTA (Beiyuan et al, 2017(Beiyuan et al, , 2018Yoo et al, 2018) because it is very biodegradable and gives comparable soil washing efficiencies to EDTA (Wang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…[S,S]eethylenediaminedisuccinic acid (EDDS) has been proposed as an environmentallyefriendly substitute for EDTA (Beiyuan et al, 2017(Beiyuan et al, , 2018Yoo et al, 2018) because it is very biodegradable and gives comparable soil washing efficiencies to EDTA (Wang et al, 2018). However, more ecoefriendly and effective biodegradable chelators for soil washing are still desired (Mu'azu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of Chinese cabbage (Brassica bara) and lettuce (Lactuca sativa) cultivation in heavily metals−contaminated soil after washing with biodegradable chelators

Wang

Zhang

Zhong

et al. 2018

Journal of Cleaner Production

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License: Article 25fa pilot End User Agreement This publication is distributed under the terms of Article 25fa of the Dutch Copyright Act (Auteurswet) with explicit consent by the author. Dutch law entitles the maker of a short scientific work funded either wholly or partially by Dutch public funds to make that work publicly available for no consideration following a reasonable period of time after the work was first published, provided that clear reference is made to the source of the first publication of the work. This publication is distributed under The Association of Universities in the Netherlands (VSNU) 'Article 25fa implementation' pilot project. In this pilot research outputs of researchers employed by Dutch Universities that comply with the legal requirements of Article 25fa of the Dutch Copyright Act are distributed online and free of cost or other barriers in institutional repositories. Research outputs are distributed six months after their first online publication in the original published version and with proper attribution to the source of the original publication. You are permitted to download and use the publication for personal purposes. All rights remain with the author(s) and/or copyrights owner(s) of this work. Any use of the publication other than authorised under this licence or copyright law is prohibited. If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons.

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“…The relevance of the research presented here is conditioned, first of all, by the necessity of decreasing the hazardous ecological conesquences of soil pollution with cadmium and optimizing the living conditions of the population of Kamianske. The assessment of the technogenic impact on the soil cover of the city is relevant in terms of monitoring and corresponds to ongoing tasks of monitoring the condition of the environment (Mu'azu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The interpolation of cadmium in soils of an urbanized territory of the steppe Dnieper region using geoinformation modeling methods

2018

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We collected data on the content of gross and mobile forms of cadmium in the genetic horizons of the main types of soils of the steppe Dnieper region in anthropogenically contaminated landscapes (for instance, the city of Kamianske). The content and distribution of gross and mobile forms of cadmium are shown laterally and radially. The highest concentration of cadmium content is noted for profiles 1 to 6, in particular for a root-saturated ground horizon (up to 50 cm). For soil horizons located at a depth of 50–150 cm, there is a slight excess (4–6 mg/kg) of the mean (2–4 mg/kg) for all urban systems. Minimal concentrations of gross forms of cadmium are observed along the soil profile of 25–29 (up to 1 mg/kg), but anomalous excesses are noted at intersections of major highways, which is characteristic for all arranged profiles. The distribution of mobile forms of cadmium for each araigned profile usually duplicates the situation of distribution of gross forms of heavy metal content. The ArcGIS Spatial Analyst's software capabilities in assessing the ecological status of the Kamianske soil according to the content of cadmium are demonstrated in the study. The results of interpolation of cadmium concentration (gross and mobile forms) on the territory of the city for the corresponding soil horizons are given. According to the conducted simulation, it has been established that the soils of almost the entire eastern part of the city (east of the soil profile of 1 to 6) are characterized by the content of the gross form of cadmium in the range of 3 to 4 mg/kg, except for the wooded ravine Vodyana, within the territorial boundaries of which the values of 2 to 3 mg/kg are forecast, as well as in the soils of the southern and central parts of the city. The interpolation of the results of measurements of cadmium content indicates that the abnormal zone is gradually decreasing by area, however, it maintains the maximum values for the city's territory.

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Polyaspartate extraction of cadmium ions from contaminated soil: Evaluation and optimization using central composite design

Cited by 41 publications

References 44 publications

Effect of soil washing with biodegradable chelators on the toxicity of residual metals and soil biological properties

Effect of soil washing with biodegradable chelators on the toxicity of residual metals and soil biological properties

Feasibility of Chinese cabbage (Brassica bara) and lettuce (Lactuca sativa) cultivation in heavily metals−contaminated soil after washing with biodegradable chelators

The interpolation of cadmium in soils of an urbanized territory of the steppe Dnieper region using geoinformation modeling methods

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