Uso de vinhaça e impactos nas propriedades do solo e lençol freático

Silva, Mellissa A. S. da; Griebeler, Nori Paulo; Borges, Lino C.

doi:10.1590/s1415-43662007000100014

Cited by 161 publications

(128 citation statements)

References 13 publications

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“…Therefore, the presence of crop residues which improve the rate of water infiltration into the soil profile, according to Panachuki et al (2011), can further exacerbate K leaching. Another important factor in this process is the practice of vinasse application, which is K-rich and can aggravate the leaching of this nutrient (Silva et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Spatial Uncertainty of Nutrient Loss by Erosion in Sugarcane Harvesting Scenarios

Mendonça

Júnior

Oliveira

et al. 2015

Rev. Bras. Ciênc. Solo

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the assessment of spatial uncertainty in the prediction of nutrient losses by erosion associated with landscape models is an important tool for soil conservation planning. the purpose of this study was to evaluate the spatial and local uncertainty in predicting depletion rates of soil nutrients (p, K, ca, and Mg) by soil erosion from green and burnt sugarcane harvesting scenarios, using sequential gaussian simulation (SgS). a regular grid with equidistant intervals of 50 m (626 points) was established in the 200-ha study area, in tabapuã, São paulo, brazil. the rate of soil depletion (SD) was calculated from the relation between the nutrient concentration in the sediments and the chemical properties in the original soil for all grid points. the data were subjected to descriptive statistical and geostatistical analysis. the mean SD rate for all nutrients was higher in the slash-and-burn than the green cane harvest scenario (Student's t-test, p<0.05). in both scenarios, nutrient loss followed the order: ca>Mg>K>p. the SD rate was highest in areas with greater slope. lower uncertainties were associated to the areas with higher

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Section: Resultsmentioning

confidence: 99%

Spatial Uncertainty of Nutrient Loss by Erosion in Sugarcane Harvesting Scenarios

Mendonça

Júnior

Oliveira

et al. 2015

Rev. Bras. Ciênc. Solo

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“…No Brasil, o destino mais comum da vinhaça é a aplicação direta no solo como fertilizante da pró-pria cana-de-açúcar, o que representa uma solução mais barata e simples do ponto de vista econômico, porém para cada litro de etanol produzido cerca de 10 -18L de vinhaça são gerados (SILVA, 2007). Em virtude do alto teor de matéria orgânica e nutrientes, o lançamento desse grande volume de efluente de forma contínua no ambiente destaca-se pela potencialidade de danos ambientais.…”

Section: Introductionunclassified

Produção de hidrogênio a partir da vinhaça da cana-de-açúcar em reatores anaeróbios operados em batelada

Telles¹,

Filho²,

Amorim³

2018

RDAE

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ResumoO objetivo deste estudo foi avaliar a produção de hidrogênio a partir da vinhaça da cana-de-açúcar em diferentes concentrações, utilizando fermentação natural como inóculo. Os ensaios foram realizados em réplicas em reatores anaeróbios em batelada nas concentrações 10, 20, 35 e 43 g DQO. L -1 de vinhaça, denominados como R1, R2, R3 e R4 respectivamente. Observou-se que a produção acumulada de H 2 foi maior para concentrações crescentes de vinhaça (0,015-0,022 mmol de H 2 ), enquanto o rendimento de H 2 foi reduzido com o aumento da concentração de vinhaça (1,31-0,77 mmol H 2 . mmol -1 carboidrato). Tal comportamento ocorreu com a eficiência de consumo de carboidratos, que reduziu de 75% a 65% e com a eficiência de remoção de DQO que variou de 33% a 22%. Destaca-se que o R1 obteve melhor rendimento de H 2 , melhor eficiência de remoção de matéria orgânica e melhor eficiência de conversão de carboidratos, presumindo que o aumento da concentração de substrato inibiu o processo de produção de H 2 . Palavras-chave: Rendimento. Matéria Orgânica. Produção AbstractThe aim of this study was to evaluate the hydrogen production from sugarcane vinasse in different concentrations, using natural fermentation as inoculum. Assays were performed in replicas in anaerobic reactors in batch on concentrations of 10, 20, referred as R1, R2, R3 and R4 respectively. It

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“…However, such applications have been reported to confer both benefits and demerits for soil quality, water and sugar cane production in field trial research, and in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 3 different agroclimatic regions (Da Silva et al, 2007;Prado et al, 2013;Teixeira et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Vinasse application to sugar cane fields. Effect on the unsaturated zone and groundwater at Valle del Cauca (Colombia)

Ortegon

Arboleda

Candela³

et al. 2016

Science of The Total Environment

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Field assessment of vinasse application in sugarcane fields  Vinasse transport was assessed in vadose zone and aquifer  Major ions were efficiently retained due to vadose zone processes and plant uptake 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 *highlights Click here to view linked References AbstractExtensive application of vinasse, a subproduct from sugar cane plantations for bioethanol production, is currently taking place as a source of nutrients that forms part of agricultural management in different agroclimatic regions. Liquid vinasse composition is characterised by high variability of organic compounds and major ions, acid pH (4.7), high TDS concentration (117,416-599,400 mg L -1 ) and elevated EC (14,350-64,099 S cm -1 ). A large-scale sugar cane field application is taking place in Valle del Cauca (Colombia), where monitoring of soil, unsaturated zone and the aquifer underneath has been made since 2006 to evaluate possible impacts on three experimental plots. For this assessment, monitoring wells and piezometers were installed to determine groundwater flow and water samples were collected for chemical analysis. In the unsaturated zone, tensiometers were installed at different depths to determine flow patterns, while suction lysimeters were used for water samples chemical determinations. The findings show that in the sandy loam plot (Hacienda Real), the unsaturated zone is characterised by low water retention, showing a high transport capacity, while the other two plots of silty composition presented temporal saturation due to La Niña event (2010)(2011). The strong La Niña effect on aquifer recharge which would dilute the infiltrated water during the monitoring period and, on the other hand dissolution of possible precipitated salts bringing them back into solution may occur. A slight increase in the concentration of major ions was observed in groundwater (~5% of TDS), which can be attributed to a combination of factors: vinasse dilution produced by water input and hydrochemical processes along with nutrients removal produced by sugar cane uptake. This fact may make the aquifer vulnerable to contamination.

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Uso de vinhaça e impactos nas propriedades do solo e lençol freático

Cited by 161 publications

References 13 publications

Spatial Uncertainty of Nutrient Loss by Erosion in Sugarcane Harvesting Scenarios

Spatial Uncertainty of Nutrient Loss by Erosion in Sugarcane Harvesting Scenarios

Produção de hidrogênio a partir da vinhaça da cana-de-açúcar em reatores anaeróbios operados em batelada

Vinasse application to sugar cane fields. Effect on the unsaturated zone and groundwater at Valle del Cauca (Colombia)

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