Full utilization of Flammulina filiformis spent mushroom substrate for sustainable production of oil/water separation bacterial nanocellulose composite with high liquid flux and seperation efficiency.

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ID: 281327
2025
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Abstract
Bacterial nanocellulose (BNC) is a promising material for oily wastewater separation due to its hydrophilic and nanometer-scale porous structure. However, its application is constrained by high production costs. This study explores the utilization of underutilized Flammulina filiformis spent mushroom substrate (Ff-SMS) to produce BNC cost-effectively. Ff-SMS was pretreated with dilute sulfuric acid and cellulase to obtain hydrolysate and lignin residue. The hydrolysate was fermented using bacteria strains LDU-K and LDU-A to produce BNC. The lignin residue was modified to enhance hydrophilicity and cross-linked with BNC to create lignin-bacterial nanocellulose (LIG-BNC) composites for oil/water separation. The yields of BNC from white and yellow F. filiformis hydrolysates were increased significantly than from the nitrogen-free glucose synthesis medium. LIG-BNC demonstrated improved hydrophilicity and porosity, with water fluxes of 19,316 ± 170 L m h for diesel/water and 14,899 ± 168 L m h for vegetable oil/water mixtures, and separation efficiencies above 96.0 %. This study effectively converts Ff-SMS into value-added products and expands the application of BNC in environmental management.
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tan2025fullinternational Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Tan, Ran;Wei, Dingkang;Sun, Qiwei;Chen, Tao;Yan, Yiran;Sun, Ruixiang;Bai, Yang;Zhang, Yao;Wang, Shan;Zhao, Ying;Wu, Nan;Zhang, Peiping;Jiang, Zhencui;Wu, Guochao;Cheng, Xianhao;
Journal International journal of biological macromolecules
Year 2025
DOI
10.1016/j.ijbiomac.2025.140861
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