State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, PR China; Beijing Key Laboratory of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, PR China.
Key Laboratory for New Functional Materials of Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, PR China; Beijing Guyue New Materials Research Institute, Beijing University of Technology, Beijing, 100124, PR China.
J Environ Manage. 2023 Nov 15;346:118985. doi: 10.1016/j.jenvman.2023.118985. Epub 2023 Sep 13.
Aspergillus niger is widely applied in the fermentation industry, but produce abundant mycelium residues every year. As a kind of solid waste, mycelium residues seriously affect the environment. How to manage and utilize this solid waste is a problem for the fermentation industry. It was reported that many kinds of biomass could be utilized to produce carbon materials, which would be further used to produce lithium-ion rechargeable batteries (LIBs). Here, porous biochar was prepared from A. niger mycelial residues and further used as an anode for LIBs. Since the A. niger mycelium contains abundant nitrogen (5.29%) from its chitosan-dominated cell wall, and silicon (9.63%) from perlite filter aid, respectively, the biochar presented an excellent cycle stability and rate performance when applied as the anode of LIBs. The conclusion of this research shows the wide application prospect of fungal fermentation residues as carbon precursors in energy storage devices. Meanwhile, this investigation provides an alternative management method for A. niger mycelium residues, with which the mycelium residues could be effectively recycled to avoid resource waste and environmental pollution.
黑曲霉广泛应用于发酵工业，但每年都会产生大量的菌丝体残留物。作为一种固体废物，菌丝体残留物严重影响环境。如何管理和利用这种固体废物是发酵工业面临的一个问题。据报道，许多生物质可以用来生产碳材料，这些碳材料可以进一步用来生产锂离子可充电电池（LIBs）。在这里，我们从黑曲霉菌丝体残留物中制备了多孔生物炭，并进一步将其用作 LIBs 的阳极。由于黑曲霉菌丝体的细胞壁主要由壳聚糖组成，因此含有丰富的氮（5.29%），同时，珍珠岩助滤剂中含有丰富的硅（9.63%），因此，当用作 LIBs 的阳极时，生物炭表现出优异的循环稳定性和倍率性能。本研究的结论表明，真菌发酵残留物作为储能装置中碳前体的应用具有广阔的前景。同时，本研究为黑曲霉菌丝体残留物的管理提供了一种替代方法，可以有效地回收菌丝体残留物，避免资源浪费和环境污染。
