Production of bio-oil and biochar by the nitrogen-rich pyrolysis of cellulose with urea: Pathway of nitrile in bio-oil and evolution of nitrogen in biochar

Yin, Mengqian; Bi, Dongmei; Zhao, Wenjing; Liu, Jing; Zhao, An; Jiang, Mei

doi:10.1016/j.jaap.2023.106137

Cited by 2 publications

(1 citation statement)

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“…This residual biomass (leaves) could be used for energy or converted into liquid via a pyrolysis process due to it containing carbon (38.50%), hydrogen (5.23%), cellulose (33.17%), and lignin (10.24%) [17]. It is also noted in the literature that biomass with high cellulose content has the potential to be used as raw material in bioenergy production [18][19][20][21]. To the best of our knowledge, there is a limited number of reports on utilizing and converting Mimusops elengi leaves (waste) via thermal pyrolysis into value-added compounds (bio-oils).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Pyrolysis Time and Temperature on the Composition and Properties of Bio-Oil Prepared from Tanjong Leaves (Mimusops elengi)

Maulinda,

Husin,

Arahman

et al. 2023

Sustainability

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This research aims to evaluate the influence of pyrolysis time and temperature on the composition and properties of bio-oil derived from Mimusops elengi. Experiments were conducted by varying the pyrolysis temperature and time from 400 to 600 °C and 30 to 120 min, respectively. Both pyrolysis temperature and time were found to significantly influence the bio-oil composition. At enhanced pyrolysis temperatures, the bio-oil yield increased while the ash and gas yields decreased. In addition, extended pyrolysis time produced a greater bio-oil yield, indicating that higher temperatures and longer durations promote additional decomposition of biomass. Functional groupings, including alcohols, phenols, ketones, esters, and aromatic compounds in the bio-oil, were identified via FT-IR analysis, indicating that the bio-oil’s diversified chemical properties make it a potential alternative feedstock. GC-MS analysis identified 26 chemical compounds in the bio-oil, of which phenol was the most abundant. However, a high phenol content can diminish bio-oil quality by enhancing acidity, decreasing heating value, and encouraging engine corrosion. Temperature and pyrolysis time are crucial factors in producing bio-oil with the desired chemical composition and physical properties. The maximum yield, 34.13%, was attained after 90 min of operation at 500 °C. The characteristics of the Mimusops elengi bio-oil produced, namely density, viscosity, pH, and HHV were 1.15 g/cm3, 1.60 cSt, 4.41, and 19.91 MJ/kg, respectively, in accordance with ASTM D7544. Using Mimusops elengi as a pyrolysis feedstock demonstrates its potential as an environmentally friendly energy source for a variety of industrial and environmental applications. The yield of bio-oil produced is not optimal due to the formation of tar, which results in the blockage of the output flow during the pyrolysis process.

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