Dinâmica de nitrogênio em lodo de esgoto sob condições de estocagem

Carneiro, Charles; Sottomaior, Ana Paola; Andreoli, Cleverson Vitório

doi:10.1590/s0100-06832005000600016

Cited by 9 publications

(9 citation statements)

References 5 publications

(5 reference statements)

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“…Nitrogen losses were dependent on application rate, but overall were higher for ABs (76%). Our results are concordant with those reported by Carneiro et al [30], who reported an average loss of 60% of the added nitrogen in 48 days for ABs (50% dry weight quicklime (CaO)). Thus, although increasing biosolid application rates increases mineralized nitrogen content in soil, it also exacerbates nitrogen loss and thereby, risk of environmental contamination.…”

Section: Laboratory Nitrogen Mineralization Assessmentsupporting

confidence: 93%

“…The nitrogen mineralization could be affected by variables as: weather, microbiological, and mineral composition of soil and biosolids. Carneiro et al [30] found that temperature and pH in the alkalinization process influences the activity microbial affecting MR. However, the pH in the mineralization process remained between 6.5 and 7.0.…”

Section: Laboratory Nitrogen Mineralization Assessmentmentioning

confidence: 99%

See 1 more Smart Citation

Thermal Drying and Alkaline Treatment of Biosolids: Effects on Nitrogen Mineralization

Silva-Leal¹,

Torres–Lozada²,

Cardoza³

2012

CLEAN Soil Air Water

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Biosolids from the Cañeveralejo WWTP were dehydrated by filter press and then applied two processes to reduce pathogens (PRP): thermally dried biosolid (TDB) and alkalinized biosolid (AB). Untreated, dehydrated biosolid (DB) was used as a control. We evaluated the impact of thermal drying and alkaline treatments on nitrogen mineralization in these substrates. Moreover, agronomic rates for biosolid applications to sugarcane were estimated for each of the treatments leading to application rates of 35.8, 36.4, and 54.5 t/ha for DB, TDB, and AB, respectively, to meet the nitrogen requirement (200 kg N/ha) for sugarcane cultivation (Saccharum officinarum). The results showed that the biosolid rates used increased the mineral nitrogen content of soils by an average of 93.8 and 439.8 mg/kg for all biosolids and the PRP (thermal drying and alkaline treatment) in biosolids had significant effects on mineralization rate, showing better results for the TDBs.

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Section: Laboratory Nitrogen Mineralization Assessmentsupporting

confidence: 93%

Section: Laboratory Nitrogen Mineralization Assessmentmentioning

confidence: 99%

Thermal Drying and Alkaline Treatment of Biosolids: Effects on Nitrogen Mineralization

Silva-Leal¹,

Torres–Lozada²,

Cardoza³

2012

CLEAN Soil Air Water

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“…However, the addition of lime to the sludge may cause phosphorus precipitation of and nitrogen loss by ammonia volatilization (Carneiro et al, 2005;Fia et al, 2005). Chueri et al (2007) observed that raising the soil pH above neutral, due to the application of limed sludge, affected the morphological parameters and the dry matter of wheat plants, and reduced the manganese availability to plants.…”

Section: Introductionmentioning

confidence: 99%

Yield and nutrition of sunflower fertilized with sewage sludge stabilized by different processes

et al. 2013

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RESUMO Produtividade e nutrição de girassol adubado com lodo de esgoto estabilizado por diferentes processosOs diferentes métodos de estabilização de lodo de esgoto modificam suas propriedades químicas, físicas e biológi-cas, podendo alterar sua eficiência para aplicação na agricultura. Objetivou-se, com este trabalho, avaliar a produtividade e os teores de nutrientes, no solo e na planta de girassol, adubada com lodo de esgoto submetido a diferentes processos de estabilização. O experimento foi desenvolvido em cambissolo háplico, com os tratamentos: testemunha (sem adubação), adubação com lodo de esgoto solarizado, adubação com lodo de esgoto compostado, adubação com lodo de esgoto vermicompostado, adubação com lodo de esgoto caleado e adubação química recomendada para a cultura. Utilizou-se o delineamento experimental em blocos casualizados, com quatro repetições. As diferentes formas de tratamento do lodo de esgoto não influenciaram a produtividade; entretanto, a aplicação desse resíduo, independentemente do método de estabilização empregado, mostrou-se mais eficiente que a adubação química e que o tratamento testemunha. A adubação com lodo de esgoto caleado proporcionou maiores teores de nutrientes no solo, enquanto os tratamentos com lodo de esgoto compostado e vermicompostado apresentaram maiores teores de macronutrientes na folha e no pecíolo, exceto no caso do nitrogênio, cujo teor foi maior com a aplicação de lodo de esgoto caleado. Yield and nutrition of sunflower fertilized with sewage sludge stabilized by different processes PalavrasThe different methods of sewage sludge stabilization modify their physical chemical and biological properties, altering its efficiency when applied in agriculture. The objective of this study was to evaluate the nutrient levels in soil and the yield of sunflower fertilized with sewage sludge stabilized by different processes. The experiment was conducted in Cambisol, with the treatments: control (without fertilization), fertilization with sewage sludge solarized, composted, vermicomposted, limed and chemical fertilizer recommended for sunflower crop. The experimental design a randomized block with four replications. The different methods of sewage sludge treatment did not affect the yield; however, the application of sewage sludge, regardless the stabilization process adopted, was more effective than chemical fertilizer and the control treatment. Overall, fertilization with limed sewage sludge provided higher soil nutrients concentrations, while treatments with composted and vermicomposted sewage sludge showed higher levels of nutrients in the plant.

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“…Sludge from lot VI (STS Ilha do Governador), analyzed in January 2016, presented higher Ca content than the other samples, which may be the result of some punctual source of this nutrient in the drainage basin. According to Carneiro et al (2005), the presence of calcium oxide can raise sewage sludge pH and favor losses through volatilization and leaching, which may explain the lower N contents in lot VI when compared to the other two lots from STS Ilha do Governador.…”

Section: Resultsmentioning

confidence: 99%

Characterization of sewage sludge generated in Rio de Janeiro, Brazil, and perspectives for agricultural recycling

Abreu

Leles

Alonso

et al. 2017

SCA

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Sanitary sewage collection and treatment is a serious environmental problem in Brazilian cities, as well as the destination of solid waste resulting from this process, i.e. the sewage sludge, a substance rich in organic matter and nutrients, which is normally discarded in landfills. The aim of this study was to characterize the sewage sludge generated in four treatment stations in Rio de Janeiro State, Brazil and check if they meet the legal criteria of the National Environment Council (CONAMA), Resolution No. 375/2006. It also focused on analyzing the perspectives for its agricultural recycling based on the potential demand for main agricultural crops grown in Rio de Janeiro State. Samples from eight sewage sludge lots from four treatment stations located in the metropolitan area of Rio de Janeiro were analyzed. These stations receive and treat only domestic sewage by activated sludge system. For chemical and biological characterization of these lots, representative samples were collected and analyzed according to parameters of CONAMA Resolution No. 375/2006. In order to analyze the perspectives of agricultural recycling of sewage sludge in Rio de Janeiro State, 10 crops with the largest cultivated area in the state were surveyed and analyzed which of them are apt to receive sewage sludge as fertilizer and/or soil amendment. To determine the potential demand for sewage sludge in agriculture, the area occupied by these crops were multiplied by each fertilizer recommendation considering the sewage sludge as fertilizer. The analyzed sludge presented a high content of nutrients and organic matter and was included in the parameters of heavy metals, pathogenic agents, and bacteriological indicators stipulated by CONAMA Resolution No. 375/2006. The agricultural panorama of Rio de Janeiro State is favorable for agricultural recycling of sewage sludge since there is a great potential demand for this residue and, among the 10 agricultural crops with the largest cultivated area in the state, sludge can be used as fertilizer or soil amendment in eight of them. The implementation of a State Sewage Sludge Recycling Program could dispose of this material in a more sustainable way, as well as improve the quality of agricultural soils and reduce costs with chemical fertilizers, bringing positive results for sanitation companies and producers. Key words: Biosolid. Solid waste. Organic fertilization. ResumoA coleta e tratamento do esgoto sanitário é um grave problema ambiental nas cidades brasileiras, bem como a destinação do resíduo sólido resultante desse processo, o lodo de esgoto, substância rica em matéria orgânica e nutrientes, que normalmente é descartada em aterros sanitários. Objetivou-se com este trabalho caracterizar o lodo de esgoto gerado em quatro estações de tratamento do estado do Rio de Janeiro e verificar se os mesmos atendem aos critérios legais presentes na resolução CONAMA n°375/2006. Com o trabalho visa-se ainda analisar as perspectivas para a reciclagem agrícola deste material, com base na demanda p...

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Dinâmica de nitrogênio em lodo de esgoto sob condições de estocagem

Cited by 9 publications

References 5 publications

Thermal Drying and Alkaline Treatment of Biosolids: Effects on Nitrogen Mineralization

Thermal Drying and Alkaline Treatment of Biosolids: Effects on Nitrogen Mineralization

Yield and nutrition of sunflower fertilized with sewage sludge stabilized by different processes

Characterization of sewage sludge generated in Rio de Janeiro, Brazil, and perspectives for agricultural recycling

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