EXPLOITATION OF GRAPE MARC AS A SOURCE OF ENERGY AND BY-PRODUCTS: A PRELIMINARY FEASIBILITY STUDY
The present research aims at analyzing the possible utilization of exhausted grape marc as a source of thermal and electrical energy or, alternatively, of marketable by-products (grape seeds and skins). Three different scenarios have been considered: 1) the mechanical separation of the grape marc constituents, preceded by the drying of the substrate; 2) the combustion of the whole grape marc, aimed at producing heat and power; 3) the gasification of the substrate, aimed at producing a syngas utilizable in traditional engines or innovative fuels cells. The feasibility of the various scenarios was verified by simulations with Aspen PlusTM software and the examination of the technical characteristics of some commercial solutions. Reference was done to the availability of the exhausted grape marc produced in a district in the north of Italy (15,000 ton/year). According to our analysis, exhausted grape marc can be seen, instead as a waste, as a potential source for renewable energy or marketable by-products. The simplest solution for its exploitation is the by-product separation, where the constituents can be dried using their less valuable fraction (stalks and a portion of skins) and the remaining skins and seeds sold to the market. However, the use of this biomass in energy production provides the best return, especially because of the economic government incentives linked to the sale of energy from renewable sources.
distillery-waste reuse gasification combustion combined heat and power generation
L. FIORI G. CROSARIOL L. FLORIO B. BOSIO
University of Trento, DICA, Via Mesiano 77, 38123 Trento, Italy University of Genoa, DICAT, Via Opera Pia 15, 16145 Genova, Italy
国际会议
北京
英文
281-286
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）