Pyrolysis of olive pomace and copyrolysis of olive pomace with refuse derived fuel

Abstract

Pyrolysis of olive pomace and copyrolysis of olive pomace with RDF blends were investigated by TGA. To see the effect of heating rate on pyrolysis behavior and kinetic parameters of olive pomace, TG and DTG curves were obtained at three different heating rates (10, 20, and 30°C min−1) between 20°C and 800°C. The results showed that activation energy decreased as the heating rate was increased. In the pyrolysis profile of olive pomace, weight loss was observed almost in one stage where two peaks overlapped between temperatures 170–372°C, having a highest peak at 342°C. In the case of olive pomace‐RDF blends, copyrolysis experiments were conducted under N2 atmosphere at a heating rate of 10°C min−1 from 20°C to 800°C. The pyrolysis profile of the blends presented three peaks (except moisture removal) meaning three consecutive reactions: cellulose‐hemicellulose decomposition, plastics decomposition and CaCO3 decomposition. Lignin decomposition comprised all the stages. Because of its high activation energy, using olive pomace alone in the pyrolysis reaction required a high temperature operation or long reaction time in the reactor. Blending it with RDF decreased the activation energy, decreased the peak temperatures, increased the number of pyrolysis stages (decomposition of plastics and inorganic carbonate based additives), and increased the time required for higher conversion rates. RDF which had a high ash content and low calorific value was found as more useful as a fuel when it was blended with olive pomace. Lower activation energies observed in the relevant decomposition stages indicated that the reaction became faster upon blending. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 649–656, 2014

Energy Requirement of Extra Virgin Olive Oil Production

“…-pruning residues-18.3 MJ/kg (dry substance) [17]; -olive pomace-20.3 MJ/kg (dry substance) [18]; -pits-19.0 MJ/kg (dry substance) [19]; -pulp-21.2 MJ/kg (dry substance) [19].…”

Catalytic Pyrolysis of Biomass

“…Given the fact that biomass is abundant, and it accounts for 38-43% of primary energy consumption in developing countries, the use of waste-based biomass sources and feedstock is of utmost importance for research in terms of clean energy generation via thermochemical or biochemical conversion processes [6][7][8]. Agricultural, aquaculture and forestry products (also by-products, residues, and wastes), dedicated energy crops, biodegradable organic fraction of industrial wastes, biodegradable organic fraction of municipal solid waste, and food processing wastes can be included in primary biomass resources [8][9][10][11][12].…”

An Alternative Use of Olive Pomace as a Wide-Ranging Bioremediation Strategy to Adsorb and Recover Disperse Orange and Disperse Red Industrial Dyes from Wastewater

“…Subsequently, increasing the temperature values the evaporation of water entrapped by the OP P component (in this case, mainly associated to lignine and cellulose materials) was observed [15]. A significant weight loss was observed when the temperature increased from 250 to 400 • C and up to 430 • C. The cellulose/hemicellulose degradation and lignin decomposition were observed with a tail up to 430 • C ascribed to the slow degradation of the main components [30][31][32]. DTG curves provided better evidence of the presence of olive pomace components.…”

“…These dyes are extensively used in textile industries due to their chemical properties [3][4][5]. As described in literature [3], disperse dyes are organic non-ionic 30 519.93 g·mol −1 ) were received by Colorprint Fashion (Muro di Alcoi, Alacant, Spain), a Spanish textiles industry, and used without further purification. In particular, the former was a mix of colors, but the majority compound was DO, with 25% to 50% of the composition.…”