NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, T-Lab Building, Singapore 117411, Singapore.
Department of Civil and Environmental Engineering, Faculty of Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore.
Bioresour Technol. 2018 Feb;249:729-736. doi: 10.1016/j.biortech.2017.10.082. Epub 2017 Nov 12.
The effects of activated carbon (AC) on methane production and the fate of antibiotic resistance genes (ARGs) were evaluated through comparing the anaerobic digestion performance and transformation of ARGs among anaerobic mono-digestion of food waste, co-digestion of food waste and chicken manure, and co-digestion of food waste and waste activated sludge. Results showed that adding AC in anaerobic digesters improved methane yield by at least double through the enrichment of bacteria and archaea. Conventional digestion process showed ability in removing certain types of ARGs, such as tetA, tetX, sul1, sul2, cmlA, floR, and intl1. Supplementing AC in anaerobic digester enhanced the removal of most of the ARGs in mono-digestion of food waste. The effects tended to be minimal in co-digestion of co-substrates such as chicken manure and waste activated sludge, both of which contain a certain amount of antibiotics.
通过比较食物垃圾单独厌氧消化、食物垃圾与鸡粪共消化和食物垃圾与剩余活性污泥共消化这三种情况下的厌氧消化性能和抗生素抗性基因（ARGs）的转化，评估了活性炭（AC）对甲烷生成和 ARGs 命运的影响。结果表明，通过细菌和古菌的富集，向厌氧消化器中添加 AC 至少将甲烷产量提高了一倍。传统的消化过程显示出能够去除某些类型的 ARGs，如 tetA、tetX、sul1、sul2、cmlA、floR 和 intl1。在食物垃圾的单独消化中，向厌氧消化器中添加 AC 增强了对大多数 ARGs 的去除效果。在鸡粪和剩余活性污泥等共底物的共消化中，这种效果最小，因为这两种底物都含有一定量的抗生素。
