Vinasse Effect on Herbicides Clomazone and Tebuthiuron Availability in Different Kinds of Soils

Matos, Ana Karollyna Alves de; Carbonari, Caio Antônio; Velini, Edivaldo Domingues; Gomes, Giovanna Larissa Gimenes Cotrick; Trindade, Maria Lúcia Bueno; Macedo, Gabrielle C.

doi:10.1590/s0100-83582015000400015

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…Subsamples of approximately 25.0 mL were collected from the moist sediment samples, filled into 50.0 mL Falcon tubes, frozen at − 80 °C, and lyophilized for 48 h. After lyophilization, 7.0-g samples were transferred to plastic cartridges with a porous membrane and a small compartment to collect the sediment solution, followed by addition of 3.0 mL deionized water and left still for 24 h. After that, the cartridges were centrifuged at 4000.0 rpm, 25 °C for 10.0 min [31]; the supernatant was collected and filtered with Millex HV syringe filters (Millipore) with Durapore® membrane, 0.45 μm pore size and 13.0 mm diameter. The filtrate was stored in amber (Flow Supply) vials for further chemical analysis.…”

Section: Sample Preparationmentioning

confidence: 99%

Contamination of fee-fishing ponds with agrochemicals used in sugarcane crops

et al. 2020

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The increasing use of agrochemicals negatively affects the environment while the generated residues impact the hydrographic networks which feed the rivers and fishing ponds, so this work investigates pesticide contamination in the supply and fishing tank waters and bottom sediment of fee-fishing ponds located in micro-basins planted with sugarcane. The results are expected to indicate the water contamination level and the impact on both the environment and human health. Therefore, water and bottom sediments from fishing ponds nearby sugarcane plantations were sampled quarterly over a year. The pesticide residues in the samples were determined by high-performance liquid chromatography coupled to mass spectrometry. The contaminants detected in the ponds were tebuthiuron (2.908 ng mL −1), metolachlor (1.211 ng mL −1), hexazinone (1.065 ng mL −1), atrazine (1.008 ng mL −1), ametryn (1.004 ng mL −1), and clomazone (0.858 ng mL −1) in the water samples while metolachlor (2.308 ng g −1), tebuthiuron (0.540 ng g −1), hexazinone (0.394 ng g −1), and isoxaflutole (0.004 ng g −1) were detected in the sediment samples. Additionally, the results show that the size of sugarcane cultivated area nearby the fishing ponds, herbicide physicochemical parameters, and applications coinciding with high rainfall are all relevant factors for water contamination. Furthermore, sediment contamination is directly correlated with the herbicides in the water ponds.

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Section: Sample Preparationmentioning

confidence: 99%

Contamination of fee-fishing ponds with agrochemicals used in sugarcane crops

et al. 2020

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“…Os efeitos da vinhaça na composição do solo podem ser explicados nos seguintes termos: o aumento do teor de carbono orgânico está relacionado à adição de matéria orgânica ao solo, proveniente da vinhaça, o que pode promover a formação de compostos estáveis e influenciar a disponibilidade de nutrientes para as plantas. Além disso, a presença do potássio proveniente da vinhaça pode alterar o equilíbrio iônico do solo, afetando a disponibilidade de outros nutrientes essenciais [145].…”

Section: Catalisadores Para Etanol Em Células a Combustívelunclassified

Desenvolvimento de células a combustível abastecidas com extrato de cana-de-açúcar: uma opção para geração de energia com menor impacto ambiental

Villardi

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Carbohydrates are widely found in nature and play a crucial role as energy sources. In Brazil, for example, approximately 16% of the energy matrix comes from sugarcane. In this context, the present thesis proposed an innovative approach using direct liquid fuel cells, fueled with sugarcane juice extract as a viable alternative to ethanol and hydrogen. This approach offers advantages, such as better logistical and smaller environmental impact compared to the vinasse generated in the alcohol production process. The main objective of this study was to investigate the oxidation of sugarcane extract in platinum and palladium catalysts to identify the most active metal for this reaction. The results revealed that the platinum catalyst exhibited higher activity in sugar oxidation, resulting in a power density ten times greater than that achieved with palladium. Furthermore, the research evaluated the possibility of reducing the production costs of fuel cells and enhancing their activity by partially replacing platinum in the catalyst with tin.The addition of tin to the catalyst led to an activity increase of over eight times compared to pure platinum. The Pt 90 Sn 10 /C composition with MPD of 8.7 mW cm -2 proved to be particularly more active than other prepared electrocatalysts, and importantly, no vinasse generation was observed during the oxidation of the synthetic sugarcane juice solution in the fuel cell.The results demonstrated that fuel cells directly fueled with sugarcane juice are fully functional and represent a promising option for converting sugarcane juice (biomass) into energy without generating vinasse waste.

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