| Title: | Performance evaluation of mesophilic semi-continuous anaerobic digestion of high-temperature thermally pre-treated olive mill solid waste |
| Author(s): | Serrano A; Fermoso FG; Alonso-Farinas B; Rodriguez-Gutierrez G; Lopez S; Fernandez-Bolanos J; Borja R; |
| Address: | "Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra. de Utrera km 1, 41013 Sevilla, Spain; School of Civil Engineering, The University of Queensland, Campus St. Lucia - AEB Ed 49, St Lucia 4067, QLD, Australia. Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra. de Utrera km 1, 41013 Sevilla, Spain. Electronic address: fgfermoso@ig.csic.es. Department of Chemical and Environmental Engineering, University of Sevilla, Higher Technical School of Engineering, Camino de los Descubrimientos, s/n, Sevilla, Spain. Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra. de Utrera km 1, 41013 Sevilla, Spain. Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra. de Utrera km 1, 41013 Sevilla, Spain; Department of Cell Biology, University of Sevilla, Sevilla, Spain" |
| DOI: | 10.1016/j.wasman.2019.02.003 |
| ISSN/ISBN: | 1879-2456 (Electronic) 0956-053X (Linking) |
| Abstract: | "The aim of the present work was to evaluate the effects of a thermal pre-treatment of olive mill solid waste (OMSW) and phenol extraction process on the semi-continuous anaerobic digestion of this pre-treated waste during a prolonged operational period (275?ª+days) in order to assess the organic loading rates (OLR) of 1 ad 2?ª+g Volatile Solids (VS)/(L.d). The anaerobic digestion of thermally pre-treated and de-phenolized OMSW was stable at an OLR of 1?ª+g VS/(L.d), which permitted a specific production rate of 172?ª++/-?ª+60?ª+mL CH(4)/(g VS.d). However, the system was not able to operate at an OLR of 2?ª+g VS/(L.d), which resulted in the total failure of the process. Regardless of the applied OLR, the phenolic compounds were effectively degraded and the inhibition thresholds were not reached. The inhibition of the anaerobic digestion process at an OLR of 2?ª+g VS/(L.d) was probably due to the overloading of the system, indicated by the accumulation of organic matter and volatile fatty acids. The operation of the anaerobic digester under stable conditions allowed for high profitability for the proposed bio-refinery concept, which would still be profitable at a phenol extract price above 51.8 euro/kg, which is 90% lower than the current price of 520 euro/kg" |
| Keywords: | Anaerobiosis Bioreactors Industrial Waste Methane *Olea *Solid Waste Temperature Economic evaluation Long-term operation Olive mill solid waste Phenolic compounds Thermal pre-treatment; |
| Notes: | "MedlineSerrano, Antonio Fermoso, Fernando G Alonso-Farinas, Bernabe Rodriguez-Gutierrez, Guillermo Lopez, Sergio Fernandez-Bolanos, Juan Borja, Rafael eng 2019/05/22 Waste Manag. 2019 Mar 15; 87:250-257. doi: 10.1016/j.wasman.2019.02.003. Epub 2019 Feb 12" |
