Sugarcane vinasse is the byproduct of ethanol production and, in many places, its final disposition has been its application in cane fields through fertigation. However, the incorrect practice of this technique can result in soil acidification, increase of salinity, and contamination of groundwater. Appropriate technologies and treatment processes can enable the recovery of byproducts from sugarcane vinasse, such as water, nutrients and energy. Thus, this study studied the integration of nanofiltration (NF) and reverse osmosis (RO), to ultrafiltration (UF) and two-stage anaerobic membrane bioreactor (2S-AnMBR) treatment aiming at the recovery of energy, nutrients (NF/RO concentrate) and water (NF/RO permeate). Seven types of commercial nanofiltration (NF) / reverse osmosis (RO) membranes were evaluated. The 2S-AnMBR reduced the vinasse organic matter and potentially produced 4.9 Nm³ of CH₄ m⁻³ of vinasse that can be used for energy purposes. The low-pressure RO membrane stood out among the membranes investigated in this study, demonstrating a good performance in terms of pollutants retention, fouling potential and specific energy consumption (SEC), with an optimal recovery rate value below 40 % at 12 bar of operation. The final RO treatment was a viable alternative to generate water for industrial reuse, allowing the production of 3.2–4.8 m³ of treated water per m³ of ethanol produced. Besides, the retentate produced by RO had an organic carbon concentration 9 times lower compared to raw vinasse, which reduces the impact during soil disposal and associated CO₂ generation.

甘蔗酒糟是乙醇生产的副产品，在许多地方，其最终处置方法是通过施肥将其应用于甘蔗田。但是，此技术的不正确实施会导致土壤酸化，盐度增加和地下水污染。适当的技术和处理工艺可以从甘蔗酒渣中回收水，养分和能源等副产品。因此，本研究研究了纳滤（NF）和反渗透（RO）到超滤（UF）和两级厌氧膜生物反应器（2S-AnMBR）处理的集成，旨在回收能量，养分（NF / RO精矿） ）和水（NF / RO渗透物）。评估了七种类型的商业纳滤（NF）/反渗透（RO）膜。³的CH ₄ 米^-3酒糟可以被用于能量目的。低压RO膜在这项研究的膜中脱颖而出，在污染物截留，结垢潜力和比能耗（SEC）方面表现出良好的性能，在12 bar操作下的最佳回收率值低于40％ 。最终RO处理是一个可行的选择，以产生工业用水再利用，允许生产的3.2-4.8米³每米的处理过的水³的产生的乙醇。此外，由RO生产的渗余物的有机碳浓度比原始酒糟低9倍，从而减少了土壤处置和相关CO ₂产生的影响。