Buitrón Germán, Quezada Maribel, Moreno Gloria
Department of Environmental Bioprocesses, Institute of Engineering, UNAM, CU Ap. Postal 70-472, 04510, Mexico DF, Mexico.
Bioresour Technol. 2004 Apr;92(2):143-9. doi: 10.1016/j.biortech.2003.09.001.
The azo dye acid red 151 (AR151) was aerobically biodegraded in a sequencing batch biofilter packed with a porous volcanic rock. AR151 was used as the sole source of carbon and energy for acclimated microorganisms. Acclimation was followed using the degradation time and the oxygen uptake rate. A maximal oxygen uptake rate of 0.5 mg O(2)/(lmin) was obtained. Mineralization studies showed that 73% (as carbon) of the initial azo dye was transformed to CO(2) by the consortia. A maximal substrate degradation rate of 247 mg AR151/(l(reactor)d) was obtained. Color removal was up to 99% using an initial concentration of 50 mg AR151/l. Anaerobic tests suggested that in the interior of the porous material, anaerobic biotransformations can occur, contributing from 14% to 16% of the decoloration of the azo dye.
偶氮染料酸性红151（AR151）在填充有多孔火山岩的序批式生物滤池中进行好氧生物降解。AR151用作驯化微生物的唯一碳源和能源。通过降解时间和氧气摄取率进行驯化。获得了0.5 mg O₂/（l·min）的最大氧气摄取率。矿化研究表明，初始偶氮染料的73%（以碳计）被菌群转化为CO₂。获得了247 mg AR151/（l（反应器）·d）的最大底物降解率。当初始浓度为50 mg AR151/l时，脱色率高达99%。厌氧试验表明，在多孔材料内部会发生厌氧生物转化，占偶氮染料脱色的14%至16%。
