Department of Environmental Science and Engineering, Fudan University
Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes
Shanghai Institute of Pollution Control and Ecological Security
Shanghai Jianke Environmental Technology Co., Ltd.

厌氧消化(Anaerobic Digestion, AD)是一种可持续的生物技术,目前已应用于有机废物的处理。 难降解的酚类化合物是厌氧消化过程中存在的主要毒性物质之一。 本研究探究了水热炭与共基质(葡萄糖)同时添加对苯酚厌氧降解的影响。 结果表明,水热炭和共基质的添加缩短了苯酚厌氧消化的延滞期,使其从对照组的 77.5 d 缩短到了 24.6~59.3 d。 同时添加水热炭和共基质时,最高产甲烷速率 Rm从 3.53 mL/ d 提高到了 4.86 ~ 6.80 mL/ d,当只添加共基质且共基质浓度过高时,Rm下降。 最适的葡萄糖共基质添加浓度为 1.0 ~ 2.0 g / L,高浓度葡萄糖环境可能富集了其它竞争性微生物,使得苯甲酸降解菌和耗乙酸产甲烷菌受到一定抑制。 水热炭也有利于富集苯甲酸降解菌,但葡萄糖共基质浓度对群落组成的影响在水热炭存在下会被减弱。 本研究利用水热炭和共基质强化苯酚厌氧降解,为苯酚厌氧消化效能提升提供了新思路。

Anaerobic digestion (AD) is a sustainable biotechnology, which has been applied in thetreatment of organic waste. Refractory phenolic compounds, as the main toxic substances in the anaero⁃bic digestion process, usually undergo complex and slow degradation. The addition of hydrochar and co-substrates has been found to effectively enhance the efficiency of phenol anaerobic digestion. Thisstudy investigated the simultaneous addition of hydrochar and co-substrates and its impact on anaerobicdegradation of phenol. Results indicated that the addition of hydrochar and co-substrates reduced thelag phase of phenol anaerobic digestion, shortening it from 77.5 days in the control to 24.6~59.3 days.When hydrochar and co-substrates were added simultaneously, the maximum methane production rate(Rm) increased from 3.53 mL/ d to 4.86~6.80 mL/ d. However, when only co-substrates were addedand the concentration was too high, it hindered the stimulation of Rm. The optimal concentration forglucose co-substrate addition was approximately between 1.0 and 2.0 g / L. A high concentration of glu⁃cose in the environment might enrich other competitive microorganisms, leading to the inhibition ofbenzoic acid-degrading bacteria and acetate-consuming methane-producing bacteria. Hydrochar alsopromoted the enrichment of benzoic acid degraders, but the influence of glucose co-substrate concen⁃tration on community composition was mitigated in the presence of hydrochar. This study utilized hydro⁃char and co-substrates to enhance anaerobic degradation of phenol, providing a novel approach to im⁃prove the efficiency of phenol anaerobic digestion.

国家自然科学基金资助项目(31970117)

邵钱祺, 罗涛, 张士成, 等. 水热炭与共基质对苯酚厌氧降解的影响[J]. 能源环境保护, 2024, 38(1):119-127.

SHAO Qianqi, LUO Tao, ZHANG Shicheng, et al. Effects of hydrochar and co-substrate on phenol anaerobicdegradation[J]. Energy Environmental Protection, 2024, 38(1): 119-127.