Extração sequencial de zinco e cobre em solos tratados com lodo de esgoto e composto de lixo

Souza, Regilene Angélica da Silva; Bissani, Carlos Alberto; Tedesco, Marino José; Fontoura, Rogério Chimanski da

doi:10.1590/s0100-40422012000200014

Cited by 6 publications

(10 citation statements)

References 15 publications

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“…This technique also allows more-detailed access to the distribution of these elements in the soil, their mobility, bioavailability and potential toxicity (Souza et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Copper and zinc fractionation in biosolid cultivated with Pennisetum purpureum in different periods

Oliveira

Cardoso

Sousa

et al. 2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TIn order to reduce the effect of heavy metals on the biosolid, it is necessary to promote its phytoremediation. It is important to know the total content and chemical forms of these elements in the residue for analyzing its behavior and potential toxicity. Thus, the aim of this study was to evaluate the fractionation and behavior of Cu and Zn in biosolid cultivated with Pennisetum purpureum in different periods. The experiment was carried out using a randomized complete block design. The treatments, with five replicates, corresponded to Pennisetum purpureum cultivation in biosolid for 30, 60, 90, 120 and 150 days after planting. The total contents of Cu and Zn in the biosolid remained below the critical limits established by the CONAMA Resolution 357, and there was a reduction in these values with Pennisetum purpureum cultivation. Furthermore, the increment in the grass cultivation period caused intense reduction of Zn contents bound to organic matter, but there was an increase in soluble Zn and residual Zn. Additionally, there was an intense reduction in the content of Cu bound to sulfides. Therefore, for biosolid phytoremediation purposes, the grass should be cultivated for 150 days.Fracionamento de cobre e zinco em biossólido cultivado com Pennisetum purpureum em diferentes períodos R E S U M O Para atenuar o efeito da presença de metais pesados no biossólido, faz-se necessária a sua fitorremediação, sendo fundamental o conhecimento das concentrações totais e das formas químicas destes elementos no resíduo para fins de análise do seu comportamento e potencial toxicidade. Assim, objetivou-se avaliar o comportamento e fracionamento do Cu e Zn em biossólido cultivado com Pennisetum purpureum em diferentes períodos. O experimento foi realizado utilizando-se delineamento em blocos casualizados. Os tratamentos, em cinco repetições, corresponderam ao cultivo de Pennisetum purpureum em biossólido por 30, 60, 90, 120 e 150 dias a partir do plantio. As concentrações totais de Cu e Zn no biossólido ficaram abaixo dos limites críticos da Resolução CONAMA 375, havendo redução destes valores com o cultivo de Pennisetum purpureum. Além disso, o incremento do período de cultivo da gramínea causou intensa redução da concentração de Zn ligado à matéria orgânica; por outro lado, houve aumento do Zn solúvel e residual. Já para o Cu houve intensa redução da concentração do elemento ligado a sulfetos. Assim, para fins de fitorremediação do biossólido, recomenda-se o plantio da gramínea por 150 dias. Key words:sequential extraction sewage sludge speciation of heavy metals Palavras-chave: especiação de metais pesados extração sequencial lodo de esgoto

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“…This technique also allows more-detailed access to the distribution of these elements in the soil, their mobility, bioavailability and potential toxicity (Souza et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Copper and zinc fractionation in biosolid cultivated with Pennisetum purpureum in different periods

Oliveira

Cardoso

Sousa

et al. 2018

Rev. bras. eng. agríc. ambient.

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“…This fraction is considered as inert and is not extracted in the other steps of the fractionation, but is considered as a chemically stable and biologically inactive fraction (Sipos et al, 2008;Souza et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

“…The sequential extraction in the soil provides detailed information on origin, form of occurrence, availability, mobilization and transport of metals in natural environments (Mallmann et al, 2012;Souza et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Copper and zinc forms in soil fertilized with pig slurry in the bean crop

Grohskopf

Corrêa

Cassol

et al. 2016

Rev. bras. eng. agríc. ambient.

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The application of pig slurry may have different influence on copper (Cu) and zinc (Zn) dynamics in the soil compared with mineral fertilization. The aim of this research was to determine the different forms of Cu and Zn in soil and their uptake by bean plants in response to the application of mineral fertilizer and pig slurry (PS). The treatments were: mineral fertilizer (Cu and Zn oxides) and liquid pig slurry, at increasing rates (0/0, 1.7/6.0, 3.4/12.0 and 6.8/24.0 kg ha-1 Cu/Zn, respectively) applied in a Rhodic Kandiudox. PS increased the Cu content in soil in the exchangeable form, Fe oxides and residual, while the mineral fertilizer increased Cu contents in the fraction associated with soil organic matter. Soil Zn contents in the fractions available, exchangeable and SOM were highest under mineral fertilization, while in the soluble fraction the contents were highest under PS. The fertilizers had not impact on Cu and Zn contents associated with Al oxides, and these elements were mostly associated with Fe oxides in the soil. PS promoted the highest biomass production in shoots and roots of the bean plants, reflecting in the highest accumulation of Cu and Zn.

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“…The application of sanitary sewage sludge provides immobilization and nitrogen nitrification (Antoniadis et al, 2008), oxidation of sulfides (Souza et al, 2012) in the sludge and the formation of organic acids in the organic matter degradation process by microorganisms (Villanueva et al, 2012). These processes can still be accelerated when under tropical climate conditions, where there is more activity and microbial biomass in the soil (Antoniadis et al, 2008), being the condition in which the experiment was conducted, thus accelerating the process of organic matter decomposition of the sludge, and initially releasing organic acids and H + ions in the medium.…”

Section: Effect Of Fertilizations On Soil Phmentioning

confidence: 99%

“…The accumulation of Cu in the 15 and 50 cm layers of the soil is due to the strong connections with the clays and organic matter of the soil, resulting in lower leaching risks of the metal in the soil profile and, consequently, losses to the groundwater (Souza et al, 2012;Singh & Kalamdhad, 2013). In addition, Oliveira et al (2018), using dry sanitary sewage sludge from the same STP supplier of the residue used in this study, obtained, by sequential extraction, that 90.5% of Cu was found bound to stable fractions, such as carbonates, organic matter, sulphides and residual, whereas only 9.5% was in the soluble and exchangeable form.…”

Section: ------------------------Mg Kg -1 ------------------------mentioning

confidence: 99%

As, Cu AND Zn CONCENTRATION IN SANITARY SEWAGE SLUDGE FERTILIZED SOIL AND IN CRAMBE AND CORN GRAINS

et al. 2018

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This study aimed to evaluate the total contents of As, Cu and Zn in the profile of a Haplic Cambisol cultivated with crambe and corn and fertilized with sanitary sewage sludge and to compare them with those obtained in other forms of fertilization, as well as the content of metals in the grain of these crops. Two experiments were carried out in the field, one with maize cultivation and another with crambe, both were delineated as randomized blocks with four treatments and six replicates, which were: without fertilization, fertilization with sewage sludge dewatered and dried in the sun, with dry sewage sludge and with mineral fertilizers. At the end of the experiments soil samples were collected at 15, 50, 100, 150 and 200 cm depth for analysis of the total contents of As, Cu and Zn, as well as the grain of the crops. No differences were observed among the treatments. The total contents of As, Cu and Zn in the soil in both experiments and in the corn grains are below the limits of prevention and the maximum limit in grains established by the Brazilian resolutions. In relation to depth, the metal contents in the samples collected from the soil submitted to the fertilization treatments were similar to those quantified in the plots that did not received fertilization, but there was accumulation of Cu and Zn in the upper layers of the soil that received fertilization.

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Extração sequencial de zinco e cobre em solos tratados com lodo de esgoto e composto de lixo

Cited by 6 publications

References 15 publications

Copper and zinc fractionation in biosolid cultivated with Pennisetum purpureum in different periods

Copper and zinc fractionation in biosolid cultivated with Pennisetum purpureum in different periods

Copper and zinc forms in soil fertilized with pig slurry in the bean crop

As, Cu AND Zn CONCENTRATION IN SANITARY SEWAGE SLUDGE FERTILIZED SOIL AND IN CRAMBE AND CORN GRAINS

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