基于BMP法微生物驱动水稻秸秆选择性降解木质素能力研究

成慧婷; 赵楠; 曾尚鹏; 黄婉媛; 宫元娟; 任德志

doi:10.19912/j.0254-0096.tynxb.2024-0816

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (12) : 485-493. DOI: 10.19912/j.0254-0096.tynxb.2024-0816

基于BMP法微生物驱动水稻秸秆选择性降解木质素能力研究

成慧婷, 赵楠, 曾尚鹏, 黄婉媛, 宫元娟, 任德志

作者信息 +

STUDY ON MICROBIAL-DRIVEN SELECTIVE LIGNIN DEGRADATION CAPACITY OF RICE STRAW BASED ON BMP METHOD

Cheng Huiting, Zhao Nan, Zeng Shangpeng, Huang Wanyuan, Gong Yuanjuan, Ren Dezhi

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摘要

基于生物-机械制浆法,通过分析秸秆组分转化模型、微观纤维形态变化和多维力学性能指标,评估5种微生物对水稻秸秆木质素的选择性降解能力。设计一种木质素降解反应器进行试验,结果表明,黄孢原毛平革菌的木质素降解率（53.6%）、优先指数（49.64）和选择性系数（4.0606）均最高;经过其处理的秸秆的抗拉强度、剪切强度、弯曲强度和弹性模量分别提高19.24%、30.35%、8.86%和15.32%。微观形貌分析表明纤维长度、宽度分别减少4.69%和27.32%,长宽比为45.075。仿真模拟表明,反应器具备良好的流动和混合性能。

Abstract

Based on the bio-mechanical pulping method, the selective degradation of rice straw lignin by five microorganisms was evaluated by analyzing the model of straw component transformation, microscopic fiber morphology changes, and multidimensional mechanical property indexes. A lignin degradation reactor was designed for experimentation, and the results show that Phanerochaete chrysosporium had the highest lignin degradation rate （53.6%）, priority index （49.64）, and selectivity coefficient （4.0606）. The straw treated by this fungus exhibits significant improvements in tensile strength （19.24%）, shear strength （30.35%）, flexural strength （8.86%）, and elastic modulus （15.32%）. Microscopic morphology analysis indicates that the fiber length and width are reduced by 4.69% and 27.32%, respectively, with a fiber aspect ratio of 45.075. Simulation results demonstrated that the reactor has good flow and mixing performance.

导出引用

成慧婷, 赵楠, 曾尚鹏, 黄婉媛, 宫元娟, 任德志. 基于BMP法微生物驱动水稻秸秆选择性降解木质素能力研究[J]. 太阳能学报. 2024, 45(12): 485-493 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0816

Cheng Huiting, Zhao Nan, Zeng Shangpeng, Huang Wanyuan, Gong Yuanjuan, Ren Dezhi. STUDY ON MICROBIAL-DRIVEN SELECTIVE LIGNIN DEGRADATION CAPACITY OF RICE STRAW BASED ON BMP METHOD[J]. Acta Energiae Solaris Sinica. 2024, 45(12): 485-493 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0816

中图分类号： S216.2

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