Effects of cellulose-based bio-plastics on the aerobic biological stabilization treatment of mixed municipal solid waste: A lab-scale assessment. (15th September 2022)

• Record Type: Journal Article
• Authors: Gadaleta, Giovanni; De Gisi, Sabino; Picuno, Caterina; Heerenklage, Joern; Di Iaconi, Claudio; Notarnicola, Michele; Kuchta, Kerstin; Sorrentino, Andrea
• Is Part Of: Journal of environmental management. Volume 318(2022)
• Publication Date: 2022-09-15
• Subjects: Biological treatment -- Cellulose acetate -- Oxygen consumption -- Synthetic mixed waste; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2022.115585
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: The aim of this work is to assess how the presence of cellulose-based bio-plastics influence the biological stabilization of mixed Municipal Solid Waste (MSW). For the scope, two cellulose acetate bio-plastics have been mixed with a synthetic mixed waste to create samples with and without bio-plastics. A self-induced biostabilization has been carried out for 7 and 14 days where temperature and off-gas have been monitored continuously. Results about temperature evolution, O2 consumption, CO2 production and respiratory quotient did not show a substantial difference regarding both the duration of the process and the presence of cellulose-based bio-plastics on the mixture. On the average, the temperature peak and the maximum daily O2 consumption and CO2 production were 52.2 °C, 35.81 g O2 /kg DM *d and 48.95 g CO2 /kg DM *d respectively. Disintegration of bio-plastics samples after 7 and 14 days were comparable (on the average 23.13%). The self-induced biostabilization gave its main contribution after 4 days and resulted almost finished at the end of the day 7 of the process. Results showed that cellulose-based bio-plastics did not give a negative effect on mixed MSW biological stabilization and suggest a possible management, aiming at energy recovery of the outputs. Graphical abstract: Image 1 Highlights: Current management of bio-plastics with organic waste is resulting in several issues. Bio-plastics did not affect the aerobic biostabilization of municipal solid waste. The bioplastics disintegration reach balance at 25% after 7 days of process. LDH filler do not alter significantly the aerobic degradation of cellulose acetate.