Influence of Mg2+ catalyzed granular sludge on flux sustainability in a sequencing batch membrane bioreactor system

Production of extracellular polymeric substances by isolate consortia obtained from mesophilic aerobic granules from the treatment of paper mill effluent

“…In addition, the higher PN content may be related to the stabilization of aggregates and PS consumption due mainly to the reduction of substrate in the internal layers of the granules, which leads to the consumption of the easily biodegradable EPS components, especially polysaccharides. The PN/PS ratio of the granules is higher than that of the activated sludge (Sajjad and Kim, 2015;Zhu et al 2015). Aerobic granules presented higher protein content (PN/PS between 1.4 and 1.6), while flocs had higher polysaccharide content (PN/PS = 0.5) (Basuvaraj et al 2015).…”

Unifying concepts in methanogenic, aerobic, and anammox sludge granulation

“…Multiple studies have also implicated the importance of cations, such as Ca 2+ or Mg 2+ , in aerobic granulation due to their interaction with EPS at concentrations ranging from 10 to 50 mg L −1 [ [55] , [56] , [57] , [58] ]. In contrast, iron concentrations required for improved aerobic granulation were demonstrated to be lower at 1–10 mg L −1 [ 59 ].…”

Biological Fixed Film

“…The influence of Mg 2+ catalyzed granular sludge on flux sustainability in a sequencing batch membrane bioreactor system was studied to achieve steady-state high membrane flux values by controlling the organic and inorganic foulants during R-1 (without the addition of Mg 2+ ), R-2 (with continuous dosage of 50 mg/L Mg 2+ ) and R-3 (with stoichiometric amounts of Mg 2+ , 18-22 mg/L) MBR operation (Sajjad and Kim, 2015). The results highlighted that in R-3, the controlled addition of Mg 2+ along with the emergence of aerobic granules tremendously increased the membrane permeability, which was approximately six and three times higher than R-1 and R-2, respectively.…”