Phytostabilization of copper mine tailings with biosolids: Implications for metal uptake and productivity of Lolium perenne

Santibáñez, Claudia; Verdugo, César; Ginocchio, Rosanna

doi:10.1016/j.scitotenv.2007.12.033

Cited by 127 publications

(73 citation statements)

References 30 publications

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“…The characteristic feature of xenobiotic immobilization is that it can take place as a result of metal absorption and accumulation in plant roots, adsorption on the surface of the roots or precipitation in the rhizosphere zone. Literature [24,25] reports Lolium perenne L. to be a suitable species for the revegetation of metal-contaminated soils from metallurgical sites, mine tailings, and metalliferous wastes. Moreover, Smith and Bradshaw [26] defined this species as a facultative metallophyte, this plant produces high dry matter yields and well accumulates metals [27].…”

Section: Introductionmentioning

confidence: 99%

Pilot Scale Use of Compost Combined with Sorbents to Phytostabilize Ni-Contaminated Soil Using Lolium perenne L.

Radziemska

Vaverková

Mazur

2017

Waste Biomass Valor

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Purpose An experiment was conducted to evaluate the potential use of a combination of food waste compost with sorbents as immobilizing agents to aid the phytostabilization of Ni-contaminated soil, using Lolium perenne L. (L. perenne). Methods The content of Ni in plants, i.e. total and extracted by 0.01 M CaCl 2 , was determined using the spectrophotometry method. Tests for the phytotoxicity of food waste compost were carried out using Phytotoxkit ™ tests. Results The compost phytotoxicity tests showed that the growth of the roots of L. perenne was slightly stimulated for a compost concentration of 25%, showing the positive impact of this material on plant growth. The biomass of L. perenne in particular organs, Ni content and the properties of soil depended on the dose of a Ni contaminant and the type of mineral and organic mixture incorporated into the soil. Conclusions Ni accumulated predominantly in the roots of the L. perenne. The greatest increase pH was observed after compost with chalcedonite mixture was added to the soil. The application of mineral and organic mixture, containing compost from food wastes and chalcedonite as a soil amendment, tended to reduce the soil total and mobile fraction of Ni more in comparison to the un-amended soil. Graphical AbstractKeywords Aided phytostabilization · Nickel contaminated soil · Food waste compost · Sorbents Statement of noveltyProblems concerning food waste management and disposal worldwide are currently among the most difficult and most topical issues in the organized waste management system. Apart from the least appropriate placing of food waste in landfills, the methods for disposal/recycling of food waste are the production of animal feed and composting. It is considered that the compost may be recycled for the removal of heavy metals from contaminated soils through the use of organic acids, microorganisms and nutrients found in composts. In this manuscript, we show that the mixture of compost from food waste and mineral sorbents (chalcedonite, halloysite), are a promising amendments for co-remediation methods of nickel contaminated soils. These novel soil amendments could be used for enhanced phytostabilization methods.

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Section: Introductionmentioning

confidence: 99%

Pilot Scale Use of Compost Combined with Sorbents to Phytostabilize Ni-Contaminated Soil Using Lolium perenne L.

Radziemska

Vaverková

Mazur

2017

Waste Biomass Valor

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“…), contributing to erosion control, slope stabilization (Luczkiewicz 2006) and aggregate stability (Bozkurt et al 2010). Improvements in soil conditions could enhance re-establishment of plants, which are important in reducing mobility and bioavailability of toxic metal in soils (Zodrow 1999;Wong 2003;Santibáñez et al 2008), thus preventing migration of trace elements to groundwater or their entry into the food chain (Ali et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Response of soil enzyme activities to synergistic effects of biosolids and plants in iron ore mine soils

Cele

Maboeta

2016

Int. J. Environ. Sci. Technol.

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Past mining activities in Swaziland have left a legacy of abandoned mine sites (iron ore, asbestos, diamond and coal mine dumps), all of which have not been reclaimed. These sites were recently (2013) considered by the country's wastewater treatment authorities as suitable places where biosolids can be applied, firstly as a biosolids disposal alternative and, secondly, as a strategy to accelerate mine soil remediation through phytostabilization. In order to understand the effects that this might have on mine soil conditions and microbiota, two (2) plant growth trials were conducted in biosolid-treated iron mine soils and one (1) trial on undisturbed soil, under greenhouse conditions, for twelve (12) weeks. According to the results obtained, the combination of biosolids and plants led to significant improvements (p \ 0.05) in parameters related to soil fertility. Significant increases (p \ 0.05) in alkaline phosphatase, b-glucosidase and urease soil enzyme activities were also observed. Copper and zinc were significantly (p \ 0.05) increased (Cu from 17.00-50.13 mg kg ); however, these sludge-derived metals did not affect enzyme activities. Improvements in soil physicochemical conditions, organic matter-metal complexes, effects of plants on metals and the essentiality of Cu and Zn to soil enzymes were thought to have masked the effects of metals. Increases in soil enzyme activities were considered to be indicative of improvements in the quality, fertility health and self-purification capacity of iron mine soils due to synergistic effects of biosolids and plants.

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“…Entre as técnicas para a redução da disponibilidade ou mobilidade de metais pesados em solos contaminados, destaca-se a fitoestabilização, que consiste na combinação do uso de amenizantes e vegetação, visando estabilizar os metais no solo e reduzir a exposição humana e animal proveniente das partículas em suspensão na atmosfera ou do movimento desses metais para o lençol freático e as águas superficiais (Ruttens et al, 2006;Santibáñez et al, 2008;Melo et al, 2009 Substâncias húmicas (SH), definidas como associações supramoleculares de moléculas orgânicas de pequena massa molecular que se mantêm unidas por causa das forças de atração fraca (ligações hidrofóbicas van der Waals, π-π e CH-π e ligações de H) (Piccolo, 2002), podem desempenhar importante papel na biodisponibilidade de metais em solos e, dessa maneira, contribuir para a amenização da toxidez às plantas. Kang et al (2011), avaliando a influência de SH na mobilidade de Cu e Zn durante compostagem aeróbica de lodo de esgoto, observaram aumento do coeficiente de distribuição de ácidos húmicos (AH)-Cu e AH-Zn de 27,5 e 3,33 %, respectivamente, sugerindo que houve redução na mobilidade e disponibilidade desses metais.…”

Section: Introductionunclassified

Ácidos húmicos e carvão vegetal ativado como amenizantes em solo contaminado por chumbo

Santos

Accioly

Nascimento

et al. 2014

Rev. Bras. Ciênc. Solo

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RESUMOA contaminação de solos por chumbo representa importante risco à saúde humana, sendo o município de Santo Amaro da Purificação, BA, um dos mais graves casos de contaminação do metal. O objetivo deste trabalho foi avaliar o efeito de ácidos húmicos e carvão vegetal ativado como amenizantes da toxidez de Pb para plantas de milho cultivadas em solo contaminado, coletado próximo à área da metalúrgica responsável pela contaminação. As doses foram estabelecidas com base no teor de C dos materiais (ácidos húmicos de compostagem, ácidos húmicos comerciais e carvão vegetal) e corresponderam a 0; 0,75; 1,5; 3; e 7,5 g kg -1 de C no solo. Ao final de 43 dias de cultivo, as plantas foram coletadas rente ao solo, separadas em parte aérea e raízes e submetidas à digestão nítrico perclórica para determinação de Pb. A fim de avaliar o efeito do metal sobre o aparato fotossintético, os teores de clorofilas a e b foram também avaliados. Os amenizantes aplicados no solo contaminado foram eficientes em diminuir o estresse provocado por Pb nas plantas de milho, sendo a maior eficiência obtida para os ácidos húmicos de compostagem, seguida pelo carvão vegetal e pelos ácidos húmicos comerciais. Todos os amenizantes testados diminuíram a translocação de Pb para a parte aérea das plantas, o que implica em maior fixação do metal no solo, com consequente diminuição dos riscos de transferência à cadeia trófica. Por essa razão, esses amenizantes podem ser recomendados para programas de fitoestabilização de Pb em solos.Termos de indexação: poluição do solo, metais pesados, elementos traço, clorofila.(1) Parte da Tese de Mestrado do primeiro autor apresentada à Universidade Federal do Recôncavo da Bahia -UFRB. Recebido para publicação em 24 de abril de 2013 e aprovado em 13 de setembro de 2013.

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Phytostabilization of copper mine tailings with biosolids: Implications for metal uptake and productivity of Lolium perenne

Cited by 127 publications

References 30 publications

Pilot Scale Use of Compost Combined with Sorbents to Phytostabilize Ni-Contaminated Soil Using Lolium perenne L.

Pilot Scale Use of Compost Combined with Sorbents to Phytostabilize Ni-Contaminated Soil Using Lolium perenne L.

Response of soil enzyme activities to synergistic effects of biosolids and plants in iron ore mine soils

Ácidos húmicos e carvão vegetal ativado como amenizantes em solo contaminado por chumbo

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