典型抗生素菌渣厌氧发酵性能和物料转化特性

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摘要为探究抗生素菌渣(Antibiotic fermentation residue, AFR)作为单一底物厌氧资源化利用的可行性,以经过脱抗处理的红霉素菌渣(EFR),头孢菌素菌渣(CFR)和青霉素菌渣(PFR)3种典型的大宗AFR为原料,开展中温((35±1)℃)条件下的产甲烷潜能和动力学试验,探究不同抗生素菌渣厌氧发酵的基本特性.通过原料组成,物料平衡及相关性分析等解析不同菌渣厌氧甲烷发酵的共性与特征.研究结果表明,EFR具有最高的产甲烷潜能,约为226mL/g VS,比CFR和PFR分别高27.0%和20.2%.不同菌渣在厌氧发酵中表现出明显的动力学特性和代谢活动差异,PFR具有最大的产沼气速率为13.2mL/(g VS·d).EFR具有明显的两阶段特征,一级动力学常数K₁和K₂分别为0.0336和0.2012d^-1.物料衡算验证了实验结果的可靠性,难溶性物质剩余量对厌氧系统的启动和稳定性具有重要影响.结合相关性分析,菌渣的SCOD/TCOD、C/N、蛋白质及脂肪含量等指标是评估其在厌氧发酵中性能的重要参数,说明优化菌渣特性可提高发酵效率.经脱抗处理的抗生素菌渣可作为厌氧发酵的单一基质,为菌渣的资源化处理提供了新的方案.

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	任建军
	朱李霞
	尹冬敏
	毛洪刚
	呼和涛力
	牛东泽
	李春雨
	唐睿
	夏禧龙

关键词 ：抗生素菌渣, 厌氧发酵, 产气动力学, 物料平衡, 相关性分析

Abstract：To investigate the feasibility of anaerobic digestion of antibiotic fermentation residues (AFR) as sole substrates, several typical AFR, including erythromycin fermentation residue (EFR), cephalosporin fermentation residue (CFR), and penicillin fermentation residue (PFR) were chosen as raw materials for digestion in this study. Batch assays of methane production potential and kinetics experiments were conducted at mesophilic temperature (35±1℃) to explore the basic characteristics of anaerobic digestion of different AFR. Mass balance and correlations between basic characteristics of raw materials and digestion performance were compared and contrasted. Results showed that EFR had the highest methane production potential, approximately 226mL/g VS, which was 27.0% and 20.2% higher than CFR and PFR, respectively. Distinct kinetic characteristics and metabolic activity differences were exhibited by different antibiotic fermentation residues during anaerobic fermentation. The highest biogas production rate, which was 13.2mL/(g VS·d), was found in PFR. A clear two-stage characteristic was exhibited by EFR, with the first-order kinetic constants K₁ and K₂ being 0.0336 and 0.2012d^-1, respectively. Material balance verification confirmed the reliability of the experimental results, and the remaining insoluble substances significantly impact the startup and stability of the anaerobic system. Correlation analysis indicated that the parameters of SCOD/TCOD, C/N, protein, and fat content in the fermentation residues are important for assessing their performance in anaerobic fermentation, suggesting that optimizing the characteristics of the fermentation residues can improve fermentation efficiency. It was demonstrated that antibiotic fermentation residues treated with antibiotic removal can serve as a single substrate for anaerobic fermentation, providing a new solution for the resource utilization of fermentation residues.

Key words： antibiotic fermentation residues anaerobic digestion biogas production dynamics mass balance correlation analysis

收稿日期: 2024-08-20

PACS:

X705

基金资助:常州市应用基础研究计划项目(CJ20235062);常州市领军型创新人才引进培育项目(CQ20230112);江苏省高等学校基础科学(自然科学)研究重大项目(23KJA610001);国家自然科学基金资助项目(32002210)

作者简介: 任建军(1983-),男,山西朔州人,研究员,博士,主要从事环境微生物与污染治理研究.发表论文50余篇.rjj@cczu.edu.cn.

引用本文:

任建军, 朱李霞, 尹冬敏, 毛洪刚, 呼和涛力, 牛东泽, 李春雨, 唐睿, 夏禧龙. 典型抗生素菌渣厌氧发酵性能和物料转化特性[J]. 中国环境科学, 2025, 45(3): 1375-1384. REN Jian-jun, ZHU Li-xia, YIN Dong-min, MAO Hong-gang, HUHE Tao-li, NIU Dong-ze, LI Chun-yu, TANG Rui, XIA Xi-long. Methane production potential and material flow for anaerobic digestion of typical antibiotic fermentation residues. CHINA ENVIRONMENTAL SCIENCECE, 2025, 45(3): 1375-1384.

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