1,721,004 research outputs found
Alcuni aspetti del bilinguismo infantile in un nuovo quartiere di Taranto
No full textAtti a cura di F. Albano Leoni, in SLI/1
Chemins de la poésie occitane contemporaine: parcours et perspectives
No full textAtti a cura di Philippe Gardy e François Pi
La grammatica latino-volgare di Nicola de Aymo (Lecce, 1444): un dono per Maria d'Enghien
No full textEdizione di un testo grammaticale in latino-volgare leccese (1444
Recensione a A. Michel, Vocabolario critico degli ispanismi siciliani, Palermo, Centro di Studi Filologici e Linguistici, 1996
No full text
Recensione a T. Hohnerlein-Buchinger, Per un sublessico vitivinicolo, Tübingen, Niemeyer, 1996
No full text
Grilling and air pollution: how charcoal quality affects emissions
Get PDFCooking with charcoal is widely popular worldwide. Several types of lump charcoal and charcoal briquettes are available
on the market, presenting distinct characteristics based on raw materials and production methods. Charcoal quality can
significantly impact combustion properties and pollutant emissions. This study aims to: (1) assess the qualitative characteristics
of commercial lump charcoal and charcoal briquettes, (2) evaluate the emission factors (EFs) associated with
their combustion, and (3) investigate how different characteristics of charcoal affect air pollutant emissions. Significant
differences in quality were observed among the charcoal samples analyzed. Lump charcoal generally exhibited superior
characteristics, including a higher carbon content (> 75% d.b.), fixed carbon (> 75% d.b.), heating value (> 29 MJ/kg),
and fuel ratio (> 4.5). In contrast, charcoal briquettes showed higher levels of volatile matter (> 20% d.b.), ash (> 15%
d.b.), and moisture content (> 6% w.b.). Furthermore, charcoal briquettes exhibited higher EFs for carbon monoxide (CO)
(> 250 g/kg), volatile organic compounds (VOC) (> 1.5 g/kg), and total suspended particulates (TSP) (> 7.5 g/kg) than
lump charcoal. Principal component analysis (PCA) demonstrated a strong influence of qualitative characteristics on emission
factors. Volatile matter, ash yield, moisture, and nitrogen content were positively correlated with higher emissions,
while carbon content, fixed carbon, and fuel ratio were negatively correlated. As lump charcoal aligns more closely with
the latter parameters, it releases lower emissions than briquettes. Improving charcoal production techniques and reinforcing
international standards are crucial to ensure product quality, reduce emissions, and minimize environmental and health
risks
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