Abstract The potential of Forward Osmosis (FO) technology to up-concentrate succinic acid (HSuc), lactic acid (HLac), and ethanol (Eth) from fermentation broths was investigated. The aforementioned molecules were obtained from two residual resources (biopulp and algal biomass) via anaerobic fermentation. HLac and Eth were produced from biopulp and HSuc was produced from macroalgal biomass hydrolysate. Herein, HLac, Eth, and HSuc titers of 14.98 ± 0.76, 19.11 ± 0.51 and 38.8 ± 0.32 g L−1 were obtained respectively. After treatment with centrifugation, FO was applied to the treated broths using a thin film composite hollow fibre (TFHF) membrane. Best results were obtained with the HSuc fermentation broth using NaCl 5.0 M as draw solution. Final HSuc titer of 186.7 ± 9.3 g L−1 and water removal of 85% were attained. Findings in this work highlight a novel application of TFHF membranes.

中文翻译：

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通过正向渗透提高琥珀酸、乳酸和乙醇发酵液的浓度

摘要 研究了正向渗透 (FO) 技术从发酵液中浓缩琥珀酸 (HSuc)、乳酸 (HLac) 和乙醇 (Eth) 的潜力。上述分子是通过厌氧发酵从两种剩余资源（生物浆和藻类生物质）中获得的。HLac 和 Eth 由生物纸浆产生，HSuc 由巨藻生物质水解产物产生。在此，分别获得了 14.98 ± 0.76、19.11 ± 0.51 和 38.8 ± 0.32 g L-1 的 HLac、Eth 和 HSuc 滴度。离心处理后，使用薄膜复合中空纤维 (TFHF) 膜将 FO 应用于处理过的肉汤。使用 NaCl 5.0 M 作为汲取溶液的 HSuc 发酵液获得了最佳结果。最终 HSuc 效价为 186.7 ± 9.3 g L-1，水分去除率为 85%。