Elucidating the microbial community associated with the protein preference of sludge-degrading worms

Extraction, recovery and characterization of structural extracellular polymeric substances from anammox granular sludge

“…As reported, EPS take a large fraction of sludge dry weight, making EPS applicable in various fields including directly used as biomaterials or as rheological-modification additives, industrial sizing chemicals, and medical reagents (Feng et al, 2019;Lin et al, 2015). With this regard, EPS recovered from waste sludge holding the promises of achieving resource recovery and contributes to a circular economy (Seviour et al, 2018;van Leeuwen et al, 2018).…”

“…Currently, more studies on wastewater treatment plants (WWTPs) gradually shift from the aquatic environment protection (i.e., pollutant removal and water quality control) towards energy/resource recovery (Hao et al, 2019;Kehrein et al, 2020). The main waste product in WWTP is excess sludge and its processing cost accounts for nearly half of the total operational capital (de Valk et al, 2019).…”

“…A significant yield of extracellular biopolymers has been extracted from different kinds of granules, e.g. about 25% of organic matter (volatile suspended solids, VSS) in aerobic granules (Felz et al, 2016); 40%-59% of VSS in anammox GS (Feng et al, 2019;Lotti et al, 2019a;Ni et al, 2010a). Currently, aerobic granules hold the promising for resource recovery (i.e., phosphate, bioplastic, EPS) from wastewater, and perhaps can be integrated with the conventional water treatment process (Van der Hoek et al, 2016).…”

“…The demonstration of EPS extraction from anaerobic granules would expand the great potential towards resource recovery. Interestingly, in many studies, the autotrophic anammox GS have been discovered to contain a large number of EPS contents (~594 mg/g VSS) compared with heterotrophic granules (Feng et al, 2019;Lotti et al, 2019a;Ni et al, 2010a). Like the conventional activated sludge technologies, waste granular sludge (WGS) from both full-scale and lab-scale GS reactors (Guo et al, 2020;Lin et al, 2015;Lotti et al, 2019b) is a concern due to the high processing cost.…”

Effect of substrate on the proliferation of Myxobolus cerebralis in the mitochondrial lineages of the Tubifex tubifex host

“…The substrate-associated microbial community in lineage III phenotypes contained diverse bacterial species associated with predation by Tt (de Valk et al 2019 ). However, we were unable to determine the potential relationship between the bacterial community in the substrate and M. cerebralis development in the Tt host due to the small sample size of oligochaetes used for microbial analysis.…”