Environmental Assessment of Olive Mill Solid Waste Valorization via Anaerobic Digestion Versus Olive Pomace Oil Extraction

被引:22
|
作者
Alonso-Farinas, Bernabe [1 ]
Oliva, Armando [2 ,3 ]
Rodriguez-Galan, Monica [1 ]
Esposito, Giovanni [4 ]
Garcia-Martin, Juan Francisco [5 ]
Rodriguez-Gutierrez, Guillermo [6 ]
Serrano, Antonio [6 ,7 ]
Fermoso, Fernando G. [6 ]
机构
[1] Univ Seville, Dept Ingn Quim & Ambiental, Escuela Tecn Super Ingn, Camino Descubrimientos S-N, Seville 41092, Spain
[2] Univ Cassino & Southern Lazio, Dept Civil & Mech Engn, Via Biasio 43, I-03043 Cassino, Italy
[3] Natl Univ Ireland Galway, Dept Microbiol, Univ Rd, Galway H91 TK33, Ireland
[4] Univ Napoli Federico II, Dept Civil Architectural & Environm Engn, Via Claudio 21, I-80125 Naples, Italy
[5] Univ Seville, Fac Quim, Dept Ingn Quim, C Prof Garcia Gonzalez 1, Seville 41012, Spain
[6] CSIC, Inst Grasa, Ctra Utrera,Km 1, Seville 41013, Spain
[7] Univ Queensland, Sch Civil Engn, Campus St Lucia,AEB Ed 49, St Lucia, Qld 4067, Australia
关键词
biogas; environmental impact; life cycle assessment; olive pomace; sustainability; LIFE-CYCLE ASSESSMENT; ENERGY;
D O I
10.3390/pr8050626
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Anaerobic digestion is a promising alternative to valorize agrifood wastes, which is gaining interest under an environmental sustainability overview. The present research aimed to compare anaerobic digestion with olive pomace oil extraction, by using life cycle assessment, as alternatives for the valorization of the olive mill solid waste generated in the centrifugation process with a two-outlet decanter from oil mills. In the case of olive pomace oil extraction, two cases were defined depending on the type of fuel used for drying the wet pomace before the extraction: natural gas or a fraction of the generated extracted pomace. The anaerobic digestion alternative consisted of the production of biogas from the olive mill solid waste, heat and electricity cogeneration by the combustion of the generated biogas, and composting of the anaerobic digestate. The life cycle assessment showed that anaerobic digestion was the best alternative, with a global environmental impact reduction of 88.1 and 85.9% respect to crude olive pomace oil extraction using natural gas and extracted pomace, respectively, as fuel.
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页数:15
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