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- W3137456218 abstract "The intense growth rate of granular bacteria biomass (GB) in anaerobic wastewater treatment units has made environmental problems with its disposal. In this research the potential of pyrolysis method to convert granular bacteria biomass to biofuels was completely investigated. The non-catalytic experiments were performed in a temperature range of 400 to 700 °C and the maximum liquid product yield on dry ash-free basis (55.0 %wt.) was obtained at optimum temperature of 550 °C. Pyrolysis of pretreated granular bacteria with 5 wt% HCl (PGB) and then impregnation with Na2CO3 (IPGB) was studied to improve the bio-oil quality as well as higher amount of synthesis gas. Feedstock pretreatment with acid decreased the gas yield in 550 °C while Na2CO3 pretreatment had reverse effect, with H2 yield (mmol/g feed) of 2.9, 2.4 and 1.8 for IPGB, GB and PGB respectively. It means Na2CO3 exhibited excellent catalytic activity toward producing hydrogen-rich hydrocarbons. Acid treatment increased bio-oil weight percent with little effect on the quality, while the IPGB pyrolysis resulted 8.3% and 8.6% decrease in the oxygenates and nitrogenates respectively and 19.5% increase in the hydrocarbons which improved the higher heating value (HHV) from 32.6 MJ/kg to 33.7 MJ/kg in comparison with GB. The raw and treated biomass was characterized by using thermogravimetric analysis (TGA-DTG), X-ray fluorescence (XRF), elemental analyses (CHNS), field emission scanning electron microscope (FESEM) and scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDS). The bio-products were analyzed by a gas chromatography-thermal conductivity detector (GC-TCD), a gas chromatography-mass spectrometry (GC–MS) and CHNS." @default.
- W3137456218 created "2021-03-29" @default.
- W3137456218 creator A5056789009 @default.
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- W3137456218 date "2021-07-01" @default.
- W3137456218 modified "2023-10-02" @default.
- W3137456218 title "Effect of acid treatment and Na2CO3 as a catalyst on the quality and quantity of bio-products derived from the pyrolysis of granular bacteria biomass" @default.
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- W3137456218 doi "https://doi.org/10.1016/j.fuel.2021.120585" @default.
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