排序方式: 共有22条查询结果,搜索用时 31 毫秒
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Pompermaier Aline Kirsten Karina Soares Suelen Mendonça Fortuna Milena Kalichak Fabiana Idalencio Renan Koakoski Gessi Barreto Rodrigo Egydio Barcellos Leonardo José Gil 《Environmental science and pollution research international》2020,27(31):38559-38567
Environmental Science and Pollution Research - Due to human activities, there is an increasing presence of agrochemicals residues in water bodies, which could be attributed to an increased use of... 相似文献
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Vuokko Malk Eduardo Barreto Tejera Suvi Simpanen Mari Dahl Riikka Mäkelä Jani Häkkinen Anna Kiiski Olli-Pekka Penttinen 《Environmental science and pollution research international》2014,21(16):9861-9876
Fuels derived from non-petroleum renewable resources have raised interest due to their potential in replacing petroleum-based fuels, but information on their fate and effects in the terrestrial and aquatic environments in accidental spill scenario is limited. In this study, migration of four fuels (conventional diesel, conventional gasoline, renewable diesel NExBTL, and ethanol-blended gasoline RE85 containing maximum 85 % ethanol) as non-aqueous phase liquids (NAPL) in soil was demonstrated in a laboratory-scale experiment. Ecotoxicity data was produced for the same fuels. There was no significant difference in migration of conventional and renewable diesel, but gasoline migrated 1.5 times deeper and 7–9 times faster in sand than diesel. RE85 spread horizontally wider but not as deep (p?0.05) as conventional gasoline. Conventional gasoline was the most toxic (lethal concentration [LC50] 20 mg/kg total hydrocarbon content [THC]) among the studied fuels in soil toxicity test with earthworm Eisenia fetida followed by ethanol-blended gasoline (LC50 1,643 mg/kg THC) and conventional diesel (LC50 2,432 mg/kg THC), although gasoline evaporated fast from soil. For comparison, the toxicity of the water-accommodated fractions (WAF) of the fuels was tested with water flea Daphnia magna and Vibrio fischeri, also demonstrating groundwater toxicity. The WAF of conventional gasoline and RE85 showed almost similar toxicity to both the aquatic test species. EC50 values of 1:10 (by volume) WAF were 9.9 %WAF (gasoline) and 9.3 %WAF (RE85) to D. magna and 9.3 %WAF (gasoline) and 12.3 %WAF (RE85) to V. fischeri. Low solubility decreased toxicity potential of conventional diesel in aquatic environment, but direct physical effects of oil phase pose a threat to organisms in nature. Renewable diesel NExBTL did not show clear toxicity to any test species. 相似文献
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Armijo de Vega C Ojeda Benítez S Ramírez Barreto ME 《Waste management (New York, N.Y.)》2008,28(Z1):S21-S26
Integrated waste management systems are one of the greatest challenges for sustainable development. For these systems to be successful, the first step is to carry out waste characterization studies. In this paper are reported the results of a waste characterization study performed in the Campus Mexicali I of the Autonomous University of Baja California (UABC). The aim of this study was to set the basis for implementation of a recovery, reduction and recycling waste management program at the campus. It was found that the campus Mexicali I produces 1ton of solid wastes per day; more than 65% of these wastes are recyclable or potentially recyclable. These results showed that a program for segregation and recycling is feasible on a University Campus. The study also showed that the local market for recyclable waste, under present conditions - number of recycling companies and amounts of recyclables accepted - can absorb all of these wastes. Some alternatives for the potentially recyclables wastes are discussed. Finally some strategies that could be used to reduce waste at the source are discussed as well. 相似文献
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de F. Araújo Karla C. de P. Barreto Jéssica P. Cardozo Jussara C. dos Santos Elisama Vieira de Araújo Danyelle M. Martínez-Huitle Carlos A. 《Environmental Chemistry Letters》2018,16(2):647-652
Environmental Chemistry Letters - There is increasing concern about contamination by surfactants that are used to extract organic pollutants during remediation of polluted soils and aquifers. For... 相似文献
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da Silva Fabiano Santana Luna Carlos Bruno Barreto Siqueira Danilo Diniz da Silva Barbosa Ferreira Eduardo Araújo Edcleide Maria 《Journal of Polymers and the Environment》2022,30(3):1028-1044
Journal of Polymers and the Environment - This work aimed to investigate the biopolyethylene (BioPE)/wood powder (WP) composites compatibilized with polyethylene-grafted maleic anhydride (PE-g-MA),... 相似文献
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When sample observations are expensive or difficult to obtain, ranked set sampling is known to be an efficient method for estimating the population mean, and in particular to improve on the sample mean estimator. Using best linear unbiased estimators, this paper considers the simple linear regression model with replicated observations. Use of a form of ranked set sampling is shown to be markedly more efficient for normal data when compared with the traditional simple linear regression estimators. 相似文献
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More of the Same: High Functional Redundancy in Stream Fish Assemblages from Tropical Agroecosystems 总被引:1,自引:0,他引:1
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A. C. H. Barreto M. M. Costa A. S. B. Sombra D. S. Rosa R. F. Nascimento S. E. Mazzetto P. B. A. Fechine 《Journal of Polymers and the Environment》2010,18(4):523-531
Banana fibers, as well as other lignocellulosic fibers, are constituted of cellulose, hemicellulose, lignin, pectin, wax and
water soluble components. The abundance of this fiber combined with the ease of its processing is an attractive feature, which
makes it a valuable substitute for synthetic fibers that are potentially toxic. In this work, the structure characterization
of the banana fiber modified by alkaline treatment was studied. Some important properties of this fiber changed due to some
chemical treatments, such as the crystalline fraction, dielectric behavior, metal removal (governed by solution pH) and biodegradation.
Our results showed that treated banana fiber is a low cost alternative for metal removal in aqueous industry effluents. Thus,
for regions with low resources, the biosorbents are an alternative to diminish the impact of pollution caused by local industries,
besides being a biodegradable product. 相似文献