Use of pulp mill inorganic wastes as alternative liming materials

Cabral, F. M.; Ribeiro, Henrique; Hilário, Luís; Machado, L; Vasconcelos, Ernesto

doi:10.1016/j.biortech.2008.03.001

Cited by 78 publications

(76 citation statements)

References 15 publications

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“…However, the standard deviations are not given for the pH and TOC values because the triplicate samples had exactly the same values. The pH of the grits was strongly alkaline (pH 13.1), and agrees with the findings of Cabral et al (2008), who reported pH values between 12.4 and 13.1 for slaker grits. The alkaline pH value and the existence of calcium carbonate, which is an active ingredient in agricultural lime, mean that the slaker grits have a liming effect and are therefore a potential soil conditioning or amendment agent.…”

Section: Resultssupporting

confidence: 90%

“…The agronomic benefits of the slaker grits as a nutrient source and a liming agent for acidic soils are well documented (Muse and Mitchell, 1995;Jordan et al, 2002;Cabral et al, 2008). As a consequence of the high calcium carbonate equivalents, the addition of grits raises the soil pH significantly, promoting neutralisation of soil acidity, which represents a valid and cost effective alternative to the use of commercial agricultural limestone (Castro et al, 2009).…”

Section: Resultsmentioning

confidence: 99%

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Total and extractable heavy metal, phosphorous and sulfur concentrations in slaker grits from the causticizing process of a pulp mill for use as a soil amendment

Nurmesniemi

Pöykiö

Watkins

et al. 2010

Chemical Speciation & Bioavailability

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The utilization of solid residues allows industry to reduce and recycle waste materials and produce beneficial by-products. The total heavy metal concentrations in slaker grits originating from the chemical recovery process of a pulp mill are lower than the current Finnish statutory limit values for fertilizers used in agriculture and in forestry. In addition, slaker grits are strongly alkaline pH (13.1), have elevated total calcium concentration (331 g kg; d.w.), contain calcite (CaCO 3 ), as well as a neutralizing value of 39.4% (Ca equivalents, d.w.). Thus, 0.96 tonnes of slaker grits would be required to replace 1 tonne of a commercial ground limestone product. This indicates that slaker grits have great potential as an industrial residue-based fertilizer and liming agent for use in agriculture and forestry. Since, before such use, it is necessary to assess the mobility of elements in the grits, the three-stage BCR sequential extraction procedure was carried out. Results from sequential extractions showed that the partitioning of Mn (47%), Co (47.1%), Ni (43.1%) and S (94%) was highest in the exchangeable fraction, in which acetic acid (CH 3 COOH) is used as extractant. The partitioning of Fe (96.5%) and Ti (75.6%) was highest in the easily reduced fraction, in which hydroxylamine hydrochloride (NH 2 OH -HCl) is used as extractant. The partitioning of Cr (90.8%), V (75.4%), Zn (78.3%), Ba (62.1%), Al (99.4%) and P (99.8%) was highest in the oxidizable fraction, in which hydrogen peroxide (H 2 O 2 ) is first applied to a heated medium (i.e. 85 C) for dissolving organic matter, after which ammonium acetate (NH 4 COOH) is used as extractant.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Total and extractable heavy metal, phosphorous and sulfur concentrations in slaker grits from the causticizing process of a pulp mill for use as a soil amendment

Nurmesniemi

Pöykiö

Watkins

et al. 2010

Chemical Speciation & Bioavailability

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“…The values are also lower than the ones found by Lacorte et al (2003) except for Cd, but higher than the ones reported by O'Brien et al (2003). Therefore, as also reported by Cabral et al (2008), metals do not seem to be a limiting factor for sludge application to land.…”

Section: Pulp Mill Sludge Characterizationcontrasting

confidence: 45%

Recycling pulp mill sludge to improve soil fertility using GIS tools

Ribeiro

Albuquerque

Quinta-Nova

et al. 2010

Resources, Conservation and Recycling

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a b s t r a c tPulp mill sludge produced in the Cova da Beira region (Portugal) contains organic matter (11-47%), nitrogen (38-2560 mg N/kg) and phosphorus (167-370 mg P/kg), which may be valuable for increasing soil productivity. The levels of heavy metals are below the limits recommended by legislation and the amount of nitrogen and phosphorous to be introduced in soils does not present a risk for nutrient leaching. After identifying the environmental and technical restrictions on its application, an area of 1650 ha was identified where the sludge can be applied in forage crops, fruit trees, olive groves and vineyards. A suitable area was also found for a biosolids storage centre. The use of GIS allowed to define a sludge application index and to produce land-use suitability maps, which can be useful for sludge management.

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“…O teor de K elevou-se de 190,00 para 260,21 mg dm -3 , teores considerados muito altos (CQFSRS/SC, 2016) (Tabela 1). Efeito similar foi obtido por Cabral et al (2008) na aplicação de cinza de biomassa florestal em solos com cultivo de plantas forrageiras.…”

Section: Resultado E Discussãounclassified

Comportamento químico do solo e satisfação dos produtores rurais após o uso de cinza

Alves

Nesi²,

Naibo³

et al. 2017

RSA

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Resumo: O alto custo e correto descarte da cinza de biomassa florestal leva as empresas de celulose apresentar formas sustentáveis do uso e descarte da cinza. O objetivo deste estudo foi avaliar a aplicação de cinza de biomassa florestal em propriedades rurais, bem como a satisfação dos produtores rurais em relação a aplicação ou não da cinza. O estudo foi realizado no município de Vargem Bonita -SC, em 14 propriedades rurais, onde foram realizadas amostras de solo em áreas com e sem aplicação cinza. Em uma área de vinte metros quadrados foram coletados 10 pontos, sendo que foram obtidos uma amostra representativa, para a determinação dos macros e micros nutrientes, pH, índice SMP, teor de matéria orgânica e alguns metais pesados. Os dados foram submetidos ao Teste de KruskalWallis. Quando aplicado cinzas no solo, o pH, índice SMP, fósforo (P), potássio (K) e cálcio (Ca) apresentaram aumentos, os elementos Mn e Al diminuíram e os metais pesados não diferiram significativamente entre as áreas onde foi aplicado e a que não foi aplicado a cinza. As cinzas nestas condições favoreceram a qualidade do solo e a grande maioria dos produtores ficaram satisfeitos com sua utilização e voltariam a usar em outras ocasiões. Palavras-chave:Metais pesados, produto secundário: resíduos de queima de madeira, resíduo sólido Abstract: The high cost and correct disposal of the forest biomass ash lead the pulp companies to break new ground in sustainable ways for using and disposing of the ash. The objective of this study was to evaluate the application of forest biomass ash in rural properties, as well as the satisfaction of agricultural producers regarding the application or none application of ash. The study was carried out in the municipality of Vargem Bonita -SC, in 14 rural properties, where soil samples were taken in areas with and without gray application. In an area of twenty square meters, 10 points were collected, and a representative sample was obtained for the determination of macros and micronutrients, pH, SMP index, organic matter content and some heavy metals. The data were submitted to the Kruskal-Wallis test. When ash was applied to the soil, the pH, SMP index, phosphorus (P), potassium (K) and calcium (Ca) increased, the Mn and Al elements decreased, and the heavy metals did not differ significantly between the areas where ash was or was not applied. The ash in these conditions favored soil quality, and the vast majority of producers were satisfied with its use and would like to use it again.

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Use of pulp mill inorganic wastes as alternative liming materials

Cited by 78 publications

References 15 publications

Total and extractable heavy metal, phosphorous and sulfur concentrations in slaker grits from the causticizing process of a pulp mill for use as a soil amendment

Total and extractable heavy metal, phosphorous and sulfur concentrations in slaker grits from the causticizing process of a pulp mill for use as a soil amendment

Recycling pulp mill sludge to improve soil fertility using GIS tools

Comportamento químico do solo e satisfação dos produtores rurais após o uso de cinza

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