Degradation of bioplastics in organic waste by mesophilic anaerobic digestion, composting and soil incubation
نویسندگان
چکیده
• Assessment of bioplastic degradation during mesophilic treatments at pilot scale. Bioplastics degraded by 17 % and 30 total solids after AD plus composting. Compost showed high content (18 TS) did not meet legal limits. Starch-based bioplastics degrades faster than polylactic acid polymer in soil. soil degrade completely 8–9 years according to calculated kinetic. The aim the study was assess effects concentrations (10 w/w, data projected for 2030) commercial bioplastics, i.e. starch based shopping bags (SBSB) (PLA) tableware, organic fraction municipal solid wastes (MSW) on compost quality obtained pilot-scale dry anaerobic digestion subsequent composting digestate. After biological processes, 48.1 (TS) SBSB 15 TS PLA degraded, resulting a (about 18 compost. Subsequent incubation soils indicated that pseudo-zero order kinetics (0.014 0.010 mg C cm −2 d -1 PLA, respectively), complete expected 1.6 7.2 (PLA), confirming intrinsic biodegradability bioplastics. Nevertheless, enhancing rate amount waste management represents goal decrease reaching environment.
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ژورنال
عنوان ژورنال: Waste Management
سال: 2021
ISSN: ['0956-053X', '1879-2456']
DOI: https://doi.org/10.1016/j.wasman.2021.08.016