Recycling end-of-life (EoL) reverse osmosis (RO) membrane modules into forward osmosis (FO) membranes is an innovative alternative to approach membrane science into Circular Economy (CE). Membrane modules are chemically modified and disassembled. This strategy achieves the valorisation of 69% of the membrane area and 63.7% of the plastic components. This study aims to assess the environmental potential of the above-mentioned recycling strategy. Therefore, a Life Cycle Assessment (LCA) was conducted with a substitution approach. The recycling strategy was compared with commercial Thin Film Composite (TFC) and Cellulose Triacetate (CTA) membranes at two different solution concentrations. To introduce the membrane performance comparison, a substitutability factor (SF) was developed with the flow ratio. OpenLCA 1.7.4 with Ecoinvent v3.4 and ILCD-midpoint and endpoint impact methods were used. The inventories of the commercial membranes were developed through membrane surface characterisation techniques, patents and lab protocols. One critical point during the inventory development was the estimation of solvent losses through BREF documents. However, a sensitivity analysis was performed to evaluate its relevance in decision making. Results pointed out the interest in almost all ILCD-midpoint categories and all the ILCD-endpoint categories. IR-hh, IR-e and Feu Categories were unfavourable coinciding with low environmental credits of the plastic valorisation. Sensitivity analysis identified solvent losses as a source of error.

将报废 (EoL) 反渗透 (RO) 膜组件回收到正渗透 (FO) 膜中是将膜科学引入循环经济 (CE) 的创新替代方案。膜模块经过化学改性和拆卸。该策略实现了 69% 的膜面积和 63.7% 的塑料部件的增值。本研究旨在评估上述回收策略的环境潜力。因此，采用替代方法进行了生命周期评估 (LCA)。将回收策略与两种不同溶液浓度的商业薄膜复合材料 (TFC) 和三醋酸纤维素 (CTA) 膜进行比较。为了介绍膜性能比较，开发了具有流量比的替代因子 (SF)。带有 Ecoinvent v3 的 OpenLCA 1.7.4。4 和 ILCD 中点和终点影响方法被使用。商业膜的库存是通过膜表面表征技术、专利和实验室协议开发的。清单制定过程中的一个关键点是通过 BREF 文件估算溶剂损失。但是，进行了敏感性分析以评估其在决策中的相关性。结果表明对几乎所有 ILCD 中点类别和所有 ILCD 端点类别的兴趣。IR-hh、IR-e 和 Feu 类别是不利的，同时塑料增值的环境信用较低。敏感性分析将溶剂损失确定为误差来源。专利和实验室协议。清单制定过程中的一个关键点是通过 BREF 文件估算溶剂损失。但是，进行了敏感性分析以评估其在决策中的相关性。结果表明对几乎所有 ILCD 中点类别和所有 ILCD 端点类别的兴趣。IR-hh、IR-e 和 Feu 类别是不利的，同时塑料增值的环境信用较低。敏感性分析将溶剂损失确定为误差来源。专利和实验室协议。清单制定过程中的一个关键点是通过 BREF 文件估算溶剂损失。但是，进行了敏感性分析以评估其在决策中的相关性。结果表明对几乎所有 ILCD 中点类别和所有 ILCD 端点类别的兴趣。IR-hh、IR-e 和 Feu 类别是不利的，同时塑料增值的环境信用较低。敏感性分析将溶剂损失确定为误差来源。结果表明对几乎所有 ILCD 中点类别和所有 ILCD 端点类别的兴趣。IR-hh、IR-e 和 Feu 类别是不利的，同时塑料增值的环境信用较低。敏感性分析将溶剂损失确定为误差来源。结果表明对几乎所有 ILCD 中点类别和所有 ILCD 端点类别的兴趣。IR-hh、IR-e 和 Feu 类别是不利的，同时塑料增值的环境信用较低。敏感性分析将溶剂损失确定为误差来源。