The present paper aims at describing the behaviour of disposable bioplastic items undergoing lab-scale anaerobic degradability tests. Single-use PLA and Mater-Bi products were selected and tested under thermophilic conditions at different food to microorganisms (F/M) ratios (0.5 and 1 gVS/gVS) and in co-digestion with synthetic food waste (FW). The tests were evaluated in terms of specific biogas production and associated kinetics. All PLA runs showed virtually complete biodegradability, with a biogas yield of 1550-1670 Nml/gTOC. On the other hand, Mater-Bi cup’s yields ranged between 570 and 640 Nml/gTOC but doubled to 1300 Nml/gTOC with the addition of FW.
Anaerobic co-digestion of single-use bioplastics and food waste / De Gioannis, G.; Falzarano, M.; Muntoni, A.; Polettini, A.; Pomi, R.; Rossi, A.; Spiga, D.. - (2022), pp. 1-7. (Intervento presentato al convegno SUM2022, 6th Symposium on Circular economy and urban mining tenutosi a Capri (NA)).
Anaerobic co-digestion of single-use bioplastics and food waste
Falzarano, M.;Polettini, A.;Pomi, R.;Rossi, A.;
2022
Abstract
The present paper aims at describing the behaviour of disposable bioplastic items undergoing lab-scale anaerobic degradability tests. Single-use PLA and Mater-Bi products were selected and tested under thermophilic conditions at different food to microorganisms (F/M) ratios (0.5 and 1 gVS/gVS) and in co-digestion with synthetic food waste (FW). The tests were evaluated in terms of specific biogas production and associated kinetics. All PLA runs showed virtually complete biodegradability, with a biogas yield of 1550-1670 Nml/gTOC. On the other hand, Mater-Bi cup’s yields ranged between 570 and 640 Nml/gTOC but doubled to 1300 Nml/gTOC with the addition of FW.| File | Dimensione | Formato | |
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