Decomposição De Lodo De Esgoto E Composto De Lodo De Esgoto Em Nitossolo Háplico

Moretti, Sarah Mello Leite; Bertoncini, Edna Ivani; Abreu-Junior, Cassio Hamilton

doi:10.1590/01000683rbcs20150082

Cited by 5 publications

(3 citation statements)

References 26 publications

(30 reference statements)

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“…2 A) for soils mixed with the organic residues. In study on the decomposition of sewage sludge and sewage sludge compost in Halic Alic Nitosol (Hapludox) soil, clay texture, observed an increase in the evolution of C–CO 2 when the sludge dose applied to the soil was increased 20 . The accumulated mineralized C from VF-CW residues in its mixture with the soil decreased with the increasing depth of its collection, i.e., it was proportional to the time that the residue remained in the system.…”

Section: Resultsmentioning

confidence: 99%

Kinetics and mineralization fraction of organic matter from sewage sludge mixed with soil under controlled laboratory conditions

Silva

Matos

Marques

et al. 2022

Sci Rep

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The objective of this work was to evaluate the kinetics and mineralization fraction of organic matter from sewage sludge mixed with the soil under controlled laboratory conditions. For this, organic material samples accumulated in layers 0–5 cm, 5–10 cm and 10–15 cm in relation to the surface of a vertical flow constructed wetland system (VF-CW) used for treatment of septic tank sludge, in addition to samples of dewatered sludge from a septic tank and a UASB reactor and non-dewatered sludge from an anaerobic digester were mixed with material collected from the surface layer of a Red Yellow Argisol at rates equivalent to the applications, via organic residues, of 300 and 600 kg ha−1 year−1 of total nitrogen. It was found that the two-phase kinetic equation fit better to the mineralization data of labile and recalcitrant organic carbon. For the lowest nitrogen application rate in the mixtures, the mineralization fractions of the total organic carbon were higher than 73%, while at the highest dose there was a reduction in the mineralization of organic matter by 17% and 63%, respectively in samples collected in layer 10–15 cm from the VF-CW and in the septic tank sludge dewatered in the drying bed.

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Section: Resultsmentioning

confidence: 99%

Kinetics and mineralization fraction of organic matter from sewage sludge mixed with soil under controlled laboratory conditions

Silva

Matos

Marques

et al. 2022

Sci Rep

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“…As the soil used does not have high organic matter content (Table 1), incorporation of the Montes Claros' or Juramento's biosolids at the doses tested may have been insufficient to significantly alter its organic matter content. This would be justified by the fact that biosolids present slow degradation of organic C (Andrade et al, 2013;Moretti et al, 2015). Applications frequency over a given period of time could have a considerable effect on organic C in the soil, which could increase the sorptive potential of auxin mimicries.…”

Section: Picloram + 24-d Leaching Testmentioning

confidence: 99%

Biosolids in Leaching of Herbicides Mimicking Auxin in Tropical Soils

et al. 2018

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-Biosolids are residues from the treatment of urban fluids used as a source of nutrients for agricultural and forestry crops. The organic matter contained in this residue and its chemical characteristics may interfere with the behavior of herbicides in the soil. The objective of this study was to evaluate the influence of biosolids on the potential for leaching herbicides mimicking auxin. Two simultaneous experiments were performed: a leaching test of picloram + 2.4-D in soil column with addition of thermally treated biosolids or solarized biosolids and another one to evaluate the effect of leachate application from the leaching tests under inert material. Each type of biosolid was incorporated in sandy soil in the proportions of 0%, 50%, 100% and 150% of the maximum recommended dose for subsurface fertilization for eucalyptus. The soil was conditioned in PVC columns and the herbicide columns based on picloram + 2.4-D (Turuna® Commercial Formulation), corresponding to 240 g L -1 of 2.4-D + 64 g L -1 of picloram at a dose of 3.5 L ha -1 of the commercial product. The columns were submitted to rain simulation and the resulting leachate was collected, followed by its application in sand-filled pots. The Cucumis sativus was sown along the profile of the soil columns and in the pots. The incorporation of the biosolid, independently of the type and dose tested did not interfere in the leaching potential of picloram + 2.4-D. Symptoms of intoxication were observed along all soil columns and pots. Therefore this residue is not very effective for the resolution of environmental problems caused by the leaching of auxin-mimicking herbicides in the soil. Keywords

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“…Despite all the benefits already known of the use of sewage sludge in agriculture, the characteristics of the sludge and its inadequate management may cause imbalance in soils (Moretti et al, 2015). Hence, it is important to evaluate how successive applications of sludge types act on soil acidity and micronutrients availability.…”

Section: Introductionmentioning

confidence: 99%

Long-term sewage sludge application in a tropical Oxisol: Effects on acidity and availability of micronutrientes

Freiberger

Castoldi

Capuani

et al. 2020

Rev. bras. eng. agríc. ambient.

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ABSTRACT The objective of this study was to evaluate the effects of acidity and availability of micronutrients on a sandy clay loam Oxisol grown with soybeans (summer) and black oat (autumn/winter), after long-term applications of biodigested sewage sludge (BS) and centrifuged sewage sludge (CS). The experiment was conducted in Botucatu, SP, Brazil, from 2002 to 2014, using a randomized block design, in 2×4 factorial scheme, with four repetitions. Treatments corresponded to six biennial applications of BS and CS at four doses: 0, 2, 4 and 8 Mg ha-1 (dry basis). Soil samples up to 0.60 m depth were taken after twelve years, and pH, potential acidity, exchangeable acidity and micronutrient contents were evaluated. The CS applications of 4 and 8 Mg ha-1 led to pH values within the recommended range up to depths of 0.10 and 0.20 m, respectively, whereas BS applications did not result in adequate pH values in any layer. The increased soil pH caused by CS applications resulted in a proportional reduction in soil potential acidity, whereas BS applications resulted in high value of potential acidity (70 mmolc dm-3) in all layers. The CS applications resulted in low Al3+ concentrations up to 0.20 m depth, whereas BS applications led to high Al3+ concentrations from the 0.05-0.10 m layer. The successive applications of both sludges resulted in Cu2+, Fe2+, Mn2+ and Zn2+ concentrations that exceeded the maximum values allowed in all soil layers. Low boron concentrations were found in the soil, and pH was the determinant factor for it.

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Decomposição De Lodo De Esgoto E Composto De Lodo De Esgoto Em Nitossolo Háplico

Cited by 5 publications

References 26 publications

Kinetics and mineralization fraction of organic matter from sewage sludge mixed with soil under controlled laboratory conditions

Kinetics and mineralization fraction of organic matter from sewage sludge mixed with soil under controlled laboratory conditions

Biosolids in Leaching of Herbicides Mimicking Auxin in Tropical Soils

Long-term sewage sludge application in a tropical Oxisol: Effects on acidity and availability of micronutrientes

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