Formulation of waste mixtures towards effective composting: A case study

• Type: Chapter or Part of a Book
• Date: 2018

Authors

Maria José Fernandes (Author) Other; Flávia Cristina Pires (Author) Other; Joana Dias (Author) FEUP

Book

Title: Book of proceedings of Wastes: Solutions, Treatments and Opportunities II

Pages: 245-250

ISBN: 978-1-138-19669-8

Publisher: Taylor & Francis

Indexing

ISI Web of Science

Scopus

Other information

Abstract (EN): The main objective of this study was to evaluate the potential of organic waste streams for composting. For that purpose, different blends were used, with prevalence of waste-water treatment sludge, considering: 30 or 50% sludge and 50 or 70% of other wastes such as corn silage, expired animal feed and biomass ash. Composting in turned piles of around 1 m(3) was performed. The process was monitored during 73 days. The obtained product was analyzed regarding physical, chemical, microbiological and phytotoxicity parameters. The best results were obtained using 50% sludge, 30% of wood chips, 5% of ash, 5% of animal feed and 10% of corn silage; however, high losses of heat occurred, hygienization temperatures were not reached and thus microbiological parameters weren't fulfilled. A class II type of material (Decree-Law No. 103/2015 on fertilizing materials) is expected to be obtained at a higher scale.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6