Evaluation of the slurry management strategy and the integration of the composting technology in a pig farm – Agronomical and environmental implications

Sáez, José Antonio López; Clemente, Rafael; Bustamante, M.A.; Yañez, David; Bernal, M.P.

doi:10.1016/j.jenvman.2017.01.040

Cited by 31 publications

(26 citation statements)

References 44 publications

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“…High concentrations of Cu and Zn are usually found in pig slurry compost (Sáez et al, 2017). The Spanish legislation for fertilizing products (Ministerio de la Presidencia, 2013) classifies composts according to the total Cu and Zn concentrations.…”

Section: Nutrient Uptake and Accumulation By L Multiflorummentioning

confidence: 99%

“…The stable final product is free of pathogens and rich in humified OM and nutrients (Vanotti et al, 2006;Brockmann et al, 2014;Santos et al, 2016;Sáez et al, 2017). Compared with other organic wastes (e.g., animal slurry, digestates, or untreated plant residues), qualitatively high-class composts show clear benefits as soil amendments/fertilizers: reliable sanitization, a high proportion of stable and humic-like substances, and high concentrations of nutrients (Bernal et al, 2009aMoral et al, 2009), the latter allowing a reduction in mineral fertilization (Brockmann et al, 2014).…”

mentioning

confidence: 99%

“…Another limitation associated with the use of composted manures, and in particular SPS, is the presence of high concentrations of Cu and Zn (Sáez et al, 2017). Both elements are supplied to piglets in great quantities, to promote growth (Cu), and prevent diseases (Zn).…”

mentioning

confidence: 99%

“…Both elements are supplied to piglets in great quantities, to promote growth (Cu), and prevent diseases (Zn). However, almost 90% is excreted in the feces (Legros et al, 2010) and is later concentrated in the SPS and in the derived compost (Sáez et al, 2017). Thus, the systematic application of composted pig manure as organic fertilizer could promote the accumulation of these elements in the soil (Gräber et al, 2005).…”

mentioning

confidence: 99%

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Composts Produced From Pig Slurry Solids: Nutrient Efficiency and N-Leaching Risks in Amended Soils

Santos

Fangueiro

Moral

et al. 2018

Front. Sustain. Food Syst.

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Section: Nutrient Uptake and Accumulation By L Multiflorummentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Composts Produced From Pig Slurry Solids: Nutrient Efficiency and N-Leaching Risks in Amended Soils

Santos

Fangueiro

Moral

et al. 2018

Front. Sustain. Food Syst.

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“…The intensive and large-scale development of pig farming has led to the concentration of pig slurry production in small areas that offer limited land for its disposal and use in agriculture (FAO, 2009;Sáez et al, 2017). In addition, the application of pig slurry to agricultural soil is limited to 170 kg N ha −1 in areas vulnerable to nitrate pollution (CEE, 1991).…”

Section: Introductionmentioning

confidence: 99%

Extractability, Distribution Among Different Particle Size Fractions, and Phytotoxicity of Cu and Zn in Composts Made With the Separated Solid Fraction of Pig Slurry

Clemente

Sáez-Tovar

Bernal

2020

Front. Sustain. Food Syst.

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The presence of elevated concentrations of heavy metals (Cu and Zn) in pig slurry and, particularly, in the solid fraction obtained after solid-liquid separation is a limiting factor for their use in agricultural soils. These metals are further concentrated if compost is produced from solid pig slurry. This paper studies the influence of the composting of the separated solid phase of pig slurry on the concentrations and solubility of Cu and Zn, and their distribution in the different particle size fractions, as well as evaluating their potential toxic effects on seed germination and seedling growth. Two composts were prepared with the solid fraction of pig slurry in a piglets and sows farm, using two different bulking agents (cereal straw and cotton gin waste). The concentrations of Cu and Zn in the mature compost were higher due to organic matter degradation; however, their solubility decreased from 0.72 and 1.76% in the solid fraction of pig slurry to 0.18 and 0.30% of total Cu and Zn, respectively, in the compost prepared with cotton gin waste. Zinc was concentrated in the smallest particle size fraction, while the Cu concentration was highest in the largest particles, and associated to the organic matter/humic fraction. The elimination of the smallest particle size fraction would not reduce significantly the total heavy metal concentration of the composts. Nevertheless, the low solubility of both metals in the composts avoided any significant toxic effect on seed germination and also in the growth test when compost was present at low rates.

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Life cycle inventory for an organic swine waste treatment system

Fenández

Amaya-Chávez

Cuevas

et al. 2023

J Mater Cycles Waste Manag

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The aim of this study was to analyze the efficiency of a system of treatment of organic swine waste as a management tool in the transformation of organic waste into products of value in the swine industry. The residues from the pig farm and the products obtained (compost, biol and biogas) were quantified and characterized, as were the energy used within the process and the distribution of the products. The negative impacts on the soil and adjacent river, as well as the efficiency of the compost as fertilizers and biol in grass and corn crops, were evaluated. The subsystems were: S1-slurry separation, S2-anaerobic digestion, S3-composting solid fraction of slurry, and S4-composting of dead tissues. S2 was not efficient in obtaining biol, with COD and TSS required. The process requires 31.1 kW/d of electrical energy and 3.22 L/d of diesel. The biogas (35,486.0 m 3 /d) is used for cooking food and heating houses, whilst the compost (82 kg/d) and biol (7.72 m 3 /d) replace inorganic fertilizers in crops. The system was adequate for the transformation of 38,109.0 kg/d of waste into valuable products. The biol needs further treatment time or to couple biodigesters-another treatment. The pig farm can be considered eco-efficient.

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Evaluation of the slurry management strategy and the integration of the composting technology in a pig farm – Agronomical and environmental implications

Cited by 31 publications

References 44 publications

Composts Produced From Pig Slurry Solids: Nutrient Efficiency and N-Leaching Risks in Amended Soils

Composts Produced From Pig Slurry Solids: Nutrient Efficiency and N-Leaching Risks in Amended Soils

Extractability, Distribution Among Different Particle Size Fractions, and Phytotoxicity of Cu and Zn in Composts Made With the Separated Solid Fraction of Pig Slurry

Life cycle inventory for an organic swine waste treatment system

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