Relationship between phenol degradation efficiency and microbial community structure in an anaerobic SBR

Microbial community structure associated with treatment of azo dye in a start-up anaerobic sequenced batch reactor

“…4c and d show that abundant microorganisms were crowded together with a large number. The above results suggest that the specialization of community through the emergence and selection of most adapted phylotypes, which could be dye-tolerant species or decolorization species [12]. The bacteria segregation phenomenon was also found in other biological treatment plants, and could be influenced by various factors, such as dye concentration and HRT [34,35].…”

“…Band O showed 93% sequence similarity with an uncultured bacteria BUD09 (within the Anaerolineaceae class), identified in an anaerobic toluene-degradation microbial community [12]. The obligate anaerobic family Anaerolineaceae within the Chloroflexi was widely distributed in various natural and artificial anaerobic ecosystems.…”

“…Anaerobic sequenced batch reactors (ASBRs) have been widely used for treating industrial effluents such as textile industries, pulp mills and other sources, due to its operational simplicity, stable performance and resistance to shock loading [12,13]. Moreover, ASBRs offer some kinetic advantages over continuous reactors, such as a higher reaction rate at the beginning of reaction since the substrate concentration is high, which is substantially different from continuous reactor that always works at the outlet concentration [14].…”

Diversity and degradation mechanism of an anaerobic bacterial community treating phenolic wastewater with sulfate as an electron acceptor

“…Baker et al (2012) reported that suppression of the SRB occurred at total phenol concentrations >500 mg/L, while methanogens might have higher tolerance for phenols. Rosenkranz et al (2013) studied on relationship between phenol degradation efficiency and microbial community structure in anaerobic SRB. The results suggested that the increase of phenol concentration from 120 to 800 mg/L had little effect on the community structure, whereas it involved drastic structural changes when increasing from 800 to 1200 mg/L, including a strong community structural shift and drop in removal efficiency.…”

Application of immobilized and granular dried anaerobic biomass for stabilizing and increasing anaerobic bio-systems tolerance for high organic loads and phenol shocks

“…The application of anaerobic technologies could be applied for high-strength industrial organic wastewater (Barrera et al, 2014;Jang et al, 2014), as well as for low-strength domestic wastewater (Bae et al, 2014;McCarty et al, 2011), and complex wastewater containing persistent and toxic chemical compounds, such as from petrochemical refineries and chemical compound production plants, contain phenolic compounds that affect process stability and performance (Cabrol and Malhautier, 2011;Chen et al, 2008;Rebhun and Galil, 1988;Rosenkranz et al, 2013). In general, anaerobic treatment of such wastewater is considered more energy-efficient than aerobic processes because of the reduced oxygen consumption and the added value of valuable biogas.…”