title: Influence of feeding mixture composition in batch anaerobic co-digestion of stabilized municipal sludge and waste from dairy farms.
abstract: Waste anaerobic co-digestion applications are particularly useful in Southern Mediterranean areas where large quantities of agricultural waste materials and waste from agro-industries are produced. This waste can be added to urban waste together with the sludge produced by wastewater treatment processes, which, when combined, guarantee the supply of organic matrixes for treatment throughout the year. The implementation of facilities to service vast areas of the agricultural economy and which are heterogeneous in terms of production can provide a good solution. We present an experimental investigation into the anaerobic co-digestion of municipal sludge and bio-waste produced in the Mediterranean area. We conducted anaerobic treatability tests, with measures of biogas production and pH of the mixture in digestion. Our main aims were to identify an optimal mix of substrates for the production of biogas, and to analyse the influence on the composition of biogas and the variation in pH values of the substrates. This analysis was conducted considering the variation of the input, in particular due to the addition of waste acids, such as biological sewage sludge.
authors.affiliation: a Department of Engineering and Environmental Physics , University of Basilicata , Via dell'Ateneo Lucano, 10, I-85100 Potenza , Italy.
authors.forename: Ettore
authors.initials: E
authors.lastname: Trulli
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Torretta
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D003612:Dairying; D019649:Food Industry; D005735:Garbage; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D012722:Sewage; D018505:Waste Management
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D012722:Sewage
keywords: anaerobic digestion; biogas; design; operation; organic waste; treatability test