氨氮和林可霉素对有机物厌氧消化的抑制效应

以含高蛋白质和抗生素的林可霉素生产残渣产沼利用为背景,通过中温厌氧消化批式实验,研究不同的氨氮浓度(300～4500 mg·L<'-1>)和林可霉素浓度(0～100 mg·L<'-1>)对含氮含抗生素类生物质废物的厌氧消化产甲烷能力的抑制作用.结果表明,氨氮和林可霉素浓度均与累积产甲烷量显著负相关.经过240 h的培养...

Inhibitory effect of ammonia and lincomycin on anaerobic digestion

In order to utilize protein-rich bio-wastes from the process of lincomycin manufacturing,mesophilic anaerobic digestion experiments were conducted in a batch mode to evaluate the inhibitory effects of ammonia concentrations(300—4500 mg·L^-1)and lincomycin ones(0—100 mg·L^-1)on methane production by anaerobic digestion of the bio-wastes.The results show that both the concentrations of ammonia and lincomycin had significant negative correlations with the cumulated amount of methane.After 240 h of batch incubation, the 50% effective inhibitory concentrations(EC₅₀)were 1445 mg·L^-1 and 35 mg·L^-1 for ammonia and lincomycin respectively, and 27—28 mg·L^-1 for free ammonia.Furthermore, there existed lincomycin in the system at concentration of 25 mg·L^-1, the inhibitory trend and level of ammonia on anaerobic digestion were the same as that without lincomycin.Therefore, the inhibition of ammonia on anaerobic digestion is independent of lincomycin.