Characterization of the extracellular polymeric substances and microbial community of aerobic granulation sludge exposed to cefalexin

Effects of ferrous iron on the performance and microbial community in aerobic granular sludge in relation to nutrient removal

“…The location of AOB and NOB depends on the granule size, changing from the core to the granule surface; extracellular polymeric substances (EPS) play a role in helping cells to communicate with each other and granulate sludge . It was reported that the microbial diversity and EPS of aerobic granular sludge can significantly change when it is exposed to hazardous and toxic compounds . Hence, the aerobic granular sludge preserved all the bacteria, especially AOB and NOB, from the demanding conditions, and it kept them together.…”

Effect of reactor height/diameter ratio and organic loading rate on formation of aerobic granular sludge in sewage treatment

“…Instead, the dominance of a particular microbial is governed by the substrate composition (type of wastewater) and concentration (OLR). Kong et al (2015) recently investigated microbial identification using a polymerase chain reaction (PCR) coupled with next-generation sequencing (NGS) method, with Illumina Miseq as platform. The result by Kong et al (2015) show that aerobic granules exposed to cefalexin consists of an abundance of Bacteroidetes and Chloroflexi instead of Proteobacteria.…”

“…Kong et al (2015) recently investigated microbial identification using a polymerase chain reaction (PCR) coupled with next-generation sequencing (NGS) method, with Illumina Miseq as platform. The result by Kong et al (2015) show that aerobic granules exposed to cefalexin consists of an abundance of Bacteroidetes and Chloroflexi instead of Proteobacteria. Papadia et al (2011) reported that a direct correlation exists between reactor configurations and microbial biomass, which is mostly composed of Pseudomonas, Stenotrophomonas and Ochrobactrum genera.…”

“…The biological treatment system design from biokinetic parameters is expected to be superior over other empirical methods that concern fewer empirical factors (Kaewsuk et al, 2010). Currently, comprehensive reviews and research works with regards to aerobic granule characteristics (Adav et al, 2008;Sheng et al, 2010;Xiao et al, 2008) and microbial community (Kong et al, 2015;Liang et al, 2015;Zhou et al, 2014) are well reported. However, there exist only a few reports that consider the bioactivity of aerobic granules in treating real wastewater, especially in the case of sewage.…”

Microbial community distribution and dominant bacterial species analysis in the bio-electrochemical system treating low concentration cefuroxime

“…The values of Ace and Chao were similar to the OTU, which showed the same decrease in community richness. Kong et al characterized the bacterial community composition of the aerobic granules exposed to cephalexin and found that the Chao 1 index increased, which may lead to changes in the EPS components [25]. The coverage is a sequencing depth index, and the high value noted the high probability of being measured.…”