کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8870303 | 1622615 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Torrefaction of landfill food waste for possible application in biomass co-firing
ترجمه فارسی عنوان
زباله های زباله های زباله های زباله برای استفاده های احتمالی در سوخت زیست توده
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Greenhouse gas emissions and municipal solid waste management have presented challenges globally. This study aims to produce a high-quality biochar with properties close to bituminous coal from landfill food waste (FW). FW was analyzed by proximate and ultimate analyses to determine its fuel properties and elemental composition before torrefaction. Temperature was varied from 200 to 300â¯Â°C at a constant residence time of 40â¯min and 10â¯Â°C/min heating rate. Calorific value, mass yield, energy yield and energy density were computed and used to determine the quality of the resulting biochar. Quality of raw food waste was also determined by elemental analysis. Thermal evolution was then investigated using hyphenated Thermogravimetric Analysis (TGA) and Fourier Transform Infra-Red Spectrometry (FTIR). Torrefaction was done at 225â¯Â°C, 275â¯Â°C and 300â¯Â°C. The calorific value was upgraded from 19.76â¯MJ/kg for dried raw food waste to 26.15â¯MJ/kg for torrefied food waste at the appropriate conditions which were 275â¯Â°C, 40â¯min and 10â¯Â°C/min. The higher heating value was comparable to that of bituminous coal from Anglo Mafube in South Africa. Elemental analysis of biochar showed an increase in carbon content with temperature due to loss of oxygen containing volatiles. This agreed with TG curves and FTIR spectra which confirmed release of H2O, CO and CO2. This resulted in a more hydrophobic solid fuel with high energy density. Food waste can therefore be upgraded to a biochar with similar fuel properties as pulverized coal used in coal fired boilers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 71, January 2018, Pages 512-520
Journal: Waste Management - Volume 71, January 2018, Pages 512-520
نویسندگان
G. Pahla, F. Ntuli, E. Muzenda,