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251.
Willemien Anaf Benjamin Horemans Teresa I. Madeira M. Luisa Carvalho Karolien De Wael René Van Grieken 《Environmental science and pollution research international》2013,20(3):1849-1857
In the 1970s, a large ambulatory of the National Tile Museum, Lisbon, was closed with glass panes on both ground and first floor. Although this design was meant to protect the museum collection from ambient air pollutants, small openings between the glass panes remain, creating a semi-enclosed corridor. The effects of the glass panes on the indoor air quality were evaluated in a comparative study by monitoring the airborne particle concentration and the extent of particle deposition at the enclosed corridor as well as inside the museum building. Comparison of the indoor/outdoor ratio of airborne particle concentration demonstrated a high natural ventilation rate in the enclosed corridor as well as inside the museum building. PM10 deposition velocities on vertical surfaces were estimated in the order of 3?×?10?4 m s?1 for both indoor locations. Also, the deposition rates of dark-coloured and black particles in specific were very similar at both indoor locations, causing visual degradation. The effectiveness of the glass panes in protecting the museum collection is discussed. 相似文献
252.
Albertinho B. de Carvalho Mina Kato Mariângela M. Rezende Pedro Afonso de P. Pereira Jaílson B. de Andrade 《Environmental science and pollution research international》2013,20(3):1565-1573
Studies have investigated the exposure levels of carbonyl compounds (CC) in the indoor and outdoor air of homes, vehicles, workplaces, urban and industrial areas, and rural sites. However, an investigation of these emissions and occupational exposure to CC in charcoal production facilities has not been previously conducted. The objective of this study was to measure the atmospheric concentrations of several CC to assess the exposure of workers of two charcoal plants located north of Salvador, Bahia, Brazil. Stationary and personal samples were collected using Sep-Pak® C18 cartridges that were coated with a 0.2 % acidic solution of 2,4-dinitrophenylhydrazine. The quantification of the resulting 2,4-dinitrophenylhydrazone derivatives was conducted using a high-performance liquid chromatography system with UV detection. In the personal samples, the concentrations of formaldehyde, acetaldehyde, propanone, furfural, and C4 isomers (n-butanal-isobutanal-butanone) ranged from 12 to 139, 38 to 165, 136 to 483, 39 to 114, and 63 to 132 μg?m?3, respectively. In the stationary samples, the concentrations of these CC ranged from 20 to 160, 111 to 284, 328 to 644, 70 to 163, and 100 to 176 μg?m?3, respectively. When compared to the occupational exposure limits for 8 h, the concentrations of formaldehyde were often greater than the levels recommended by the American National Institute for Occupational Safety and Health, which indicates a health risk for charcoal workers. These results are the first reported concerning the occupational exposure to CC in charcoal plants. 相似文献
253.
Application of fluidization to separate packaging waste plastics 总被引:1,自引:0,他引:1
The objective of the experimental work described in this paper is the study of the separation of PS (polystyrene) from PET (polyethylene terephthalate) and PVC (polyvinyl chloride) from drop-off points using a fluidized bed separator. This is a low-cost process commonly used in the hydro-classification of mineral ores. Firstly, experimental tests were carried out with artificial granulated samples with different grain sizes, types and sources of plastic ("separability tests"). The particle settling velocities were determined under different operating conditions. Then, based on the results, the laboratory tests continued with real mixtures of waste plastics ("separation tests") and the efficiency of the process was evaluated. From a PET-rich mixture, a concentrate of PS with a 75% grade in PS was produced while the underflow was quite clear from PS (grade less than 0.5% in PS). 相似文献
254.
255.
Carvalho Fernando L. Pinto Diana Schio Rejiane R. dos Santos Jaqueline P. Ketzer Felipe Silva Luis F. O. Dotto Guilherme L. 《Environmental science and pollution research international》2022,29(44):66348-66358
Environmental Science and Pollution Research - A real industrial effluent from the pre-treatment and painting processes was polished through adsorption using alternative biochar derived from grape... 相似文献
256.
Carvalho Thayane Ferreira Carvalho Aline Cristina Zanuncio José Cola de Oliveira Marcio Leles Romarco Machado Evandro Luiz Mendonça José Anderson Cleiton Santos José Barbosa Pereira Israel Marinho 《Environmental science and pollution research international》2022,29(10):14195-14205
Environmental Science and Pollution Research - Pteridium aquilinum (Dennstaedtiaceae) colonization affects ecological and restoration processes. The knowledge of the impacts on the ecological... 相似文献
257.
Carvalho Barros Giselle Kalline Gomes Duarte Lindemberg Jesus Nogueira Melo Ricardo Paulo Fonseca Lopes Francisco Wendell Bezerra Barros Neto Eduardo Lins 《Journal of Polymers and the Environment》2022,30(6):2534-2546
Journal of Polymers and the Environment - The environmental impacts caused by dyes in industrial wastewater are incalculable, due to their adverse effects on the ecosystem and human life,... 相似文献