Knowledge on the material flows of engineered nanomaterials (ENMs) is crucial for assessing their environmental risks. Waste management processes constitute important parts of material flow analyses as they affect large fractions of the ENMs. Accordingly, their detailed representation could substantially improve the models. Our goal was to consider the temporal variations of wastewater and solid waste management in the dynamic probabilistic material flow analysis of carbon nanotubes (CNTs), nano-Ag, -TiO₂ and -ZnO in Europe from 2000 to 2020. New input parameters included wastewater and solid waste management rates for each year. The uncertainties associated with these data were assessed based on the type of consulted source, the geographical representativeness and temporal concordance. Results show modal values of 10–27% of ENMs going from sorting to reprocessing. Large shares of environmental releases of nano-Ag and nano-ZnO end in surface water (4.9 t and 1700 t respectively in 2020), while sludge-treated soil as environmental compartment is receiving most of nano-TiO₂ (22,000 t in 2020) and CNTs (8.8 t in 2020). Discharges from wastewater management to the subsurface soil make this compartment the largest environmental sink of nano-Ag and nano-ZnO (30 t and 3860 t accumulated in 2020, respectively). Landfills represent significant stocks of ENMs, with 105 t, 2077 t, 69,000 t and 1042 t of nano-Ag, nano-ZnO, nano-TiO₂ and CNTs. This model includes detailed descriptions of waste management and sources of ENMs released at the European scale. However, a better understanding of the behaviour, i.e. fate and potential transformations of ENMs in reprocessing systems, is needed to complete the full assessment.

关于工程纳米材料（ENM）的材料流动的知识对于评估其环境风险至关重要。废物管理流程是物质流分析的重要组成部分，因为它们会影响ENM的大部分。因此，它们的详细表示可以大大改善模型。我们的目标是在碳纳米管，纳米银，-TiO ₂的动态概率材料流分析中考虑废水和固体废物管理的时间变化2000年至2020年欧洲的-ZnO。新的输入参数包括每年的废水和固体废物管理率。根据咨询来源的类型，地域代表性和时间一致性，评估了与这些数据相关的不确定性。结果显示，从分类到再处理，ENM的模态值占10％至27％。大量的纳米Ag和纳米ZnO释放到地表水中（到2020年分别为4.9 t和1700 t），而污泥处理过的土壤作为环境隔间正在接受大部分的TiO ₂纳米颗粒。（2020年为22,000吨）和CNT（2020年为8.8吨）。从废水管理到地下土壤的排放使该隔室成为纳米银和纳米氧化锌的最大环境汇（分别于2020年累积30吨和3860吨）。垃圾填埋场代表着大量的ENM，其中有105吨，2077吨，69,000吨和1042吨的纳米银，纳米ZnO，纳米TiO ₂和CNT。该模型包括在欧洲范围内发布的废物管理和ENM来源的详细说明。但是，需要对行为进行更好的理解，即，ENM在后处理系统中的命运和潜在转变，才能完成全面评估。