Department of Forest Biomaterials, College of Natural Resources, North Carolina State University, Raleigh, NC 27695-8005, United States.
Cotton Incorporated, Cary, NC 27513, United States; Nicholas School of the Environment, Duke University, Durham, NC 27708, United States.
Mar Pollut Bull. 2020 Feb;151:110826. doi: 10.1016/j.marpolbul.2019.110826. Epub 2020 Jan 29.
The aerobic biodegradation of common textiles that shed microfibers during laundering was evaluated under the action of microbes found in the environment, such as lake and seawater, and activated sludge at a low concentration from a wastewater treatment plant (WWTP). Under these conditions, the biodegradation potential was the same in all the experiments: Microcrystalline Cellulose (MCC) > Cotton > Rayon > Polyester/Cotton ≫ Polyester. Nevertheless, for cotton and rayon yarns, >70% biodegradation was achieved with activated sludge at low concentration and lake water, whereas in seawater, about 50% degradation was reached. Polyester did not appreciably degrade. The biodegradation results herein indicate potential not absolutes in nature. The bacterial diversity analyses in the different biodegradation inoculums show that there are distinct bacterial communities related to the assimilation and mineralization of complex carbohydrates that were promoted with the cellulosic MCC, cotton, and rayon samples different than the polyester sample.
评价了在环境中微生物（如湖水、海水）和来自污水处理厂（WWTP）的低浓度活性污泥的作用下，普通纺织品在洗涤过程中脱落的微纤维的有氧生物降解性。在这些条件下，所有实验中的生物降解潜力相同：微晶纤维素（MCC）>棉>人造丝>聚酯/棉>聚酯。然而，对于棉和人造丝纱线，在低浓度的活性污泥和湖水的作用下，可实现>70%的生物降解，而在海水中，降解率约为 50%。聚酯没有明显降解。本文的生物降解结果表明，自然界中的情况并非绝对。不同生物降解接种物中的细菌多样性分析表明，存在与复杂碳水化合物的同化和矿化有关的不同细菌群落，这些群落是由 MCC、棉和人造丝样品促进的，而聚酯样品则没有。
