Dróżdż Danuta, Malińska Krystyna, Postawa Przemysław, Stachowiak Tomasz, Nowak Dorota
Faculty of Infrastructure and Environment, Czestochowa University of Technology, Brzeznicka 60A, 42-200 Czestochowa, Poland.
Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, Armii Krajowej 19c, 42-200 Czestochowa, Poland.
Materials (Basel). 2022 Apr 14;15(8):2869. doi: 10.3390/ma15082869.
Plastic waste derived from plastic dog poop bags (DPBs) could be considered a negligible source of plastic waste. However, it is estimated that this kind of waste contributes to 0.6% of the total plastic waste generated worldwide, and it is expected to increase in the following years. Plastic dog poop bags can be replaced with biodegradable and bio-based alternatives. These alternatives can biodegrade in various environments such as composting, soil, or water and thus allow for end-of-life management without the risk of contaminating the environment with microplastics. However, not all biodegradable bags are always compostable. In this study, we tested composting as the end-of-life management of selected biodegradable dog poop bags (i.e., prototypes of bags and commercially available bags). We analyzed the biodegradation of selected biodegradable plastic dog poop bags during the composting of green waste in laboratory composting reactors after 4 weeks and 90 days of composting. All the investigated DPBs decomposed 100% after 90 days of composting. However, the fresh compost obtained after the 90-day composting of green waste mixed with the investigated bags containing dog poop did not demonstrate high quality.
源自塑料狗便袋（DPBs）的塑料垃圾可被视为塑料垃圾中可忽略不计的一个来源。然而，据估计，这类垃圾占全球产生的塑料垃圾总量的0.6%，并且预计在接下来的几年中还会增加。塑料狗便袋可用可生物降解和基于生物的替代品来取代。这些替代品能在诸如堆肥、土壤或水中等各种环境中生物降解，从而实现生命周期结束时的管理，而不存在用微塑料污染环境的风险。然而，并非所有可生物降解袋都始终可堆肥。在本研究中，我们测试了将堆肥作为选定的可生物降解狗便袋（即袋子原型和市售袋子）生命周期结束时的管理方式。我们在实验室堆肥反应器中，对绿色垃圾进行4周和90天堆肥后，分析了选定的可生物降解塑料狗便袋在堆肥过程中的生物降解情况。所有被研究的狗便袋在堆肥90天后均100%分解。然而，将绿色垃圾与装有狗便的被研究袋子一起进行90天堆肥后得到的新鲜堆肥，并未表现出高质量。
