Biodegradation of nitrobenzene by aerobic granular sludge in a sequencing batch reactor (SBR)

Nitrobenzene degradation pathways and their interaction with sulfur and nitrogen transformations in horizontal subsurface flow constructed wetlands

“…The phenomenon can be attributed to the effect of NB toxicity on microorganisms that reduced the microbial activities. Zhao et al (2011) concluded that high NB concentration of up to 600 mg/L inhibits microorganism activity that leads to low removal efficiency in a study carried out using a sequence batch reactor. In other studies, an inhibitory effect on microbial activity occasioned by the increase in NB concentration was reported (Lin et al, 2012;Liu et al, 2013).…”

“…The limitation for biological methods is their high sensitivity to external environmental changes, which affects specific enzymes and various intermediate formation resulting in low rates of degradation (Wang et al, 2011;Kulkarni and Chaudhari, 2007;Razo-Flores et al, 1997). However, biological methods have merits of relatively low investment, eco-friendly, economical cost, and sustainability (Zhao et al, 2011). Some of these advantages allow in situ bioremediation of pollutants for rural-based industries.…”

Aerobic granules cultivated and operated in continuous-flow bioreactor under particle-size selective pressure

“…In previous studies, aerobic granular sludge was often cultivated in batch reactors, such as the sequencing batch reactor and sequencing batch airlift reactor, which were characterized by batch influent, effluent and washing out of sludge (Zhao et al, 2011). However, batch operation mode is not suitable for large-scale sewage treatment and could lead to great changes in the growth environment for aerobic granules, possibly resulting in instability for granular reactors.…”

Influence of an aniline supplement on the stability of aerobic granular sludge

“…The aerobic granules prepared by Othman et al (2013) were used to treat livestock wastewater, and the removal efficiencies of COD, TN and total phosphorus (TP) were 70e74%, 60e73% and 59e70%, respectively. Nitrobenzene was used to domesticate the aerobic granules in the research of Zhao et al (2011), and ultimately 600 mg/L nitrobenzene could be nearly completely removed by the aerobic granules.…”