Zhang, Yu-Ting; Wei, Wei; Wang, Chen; Ni, Bing-Jie published the artcile< Microbial and physicochemical responses of anaerobic hydrogen-producing granular sludge to polyethylene micro(nano)plastics>, COA of Formula: C6H12O6, the main research area is polyethylene microplastic anaerobic hydrogen producing granular sludge physicochem response; Anaerobic granular sludge; Extracellular polymeric substances; Hydrogen production; Nanoplastics; Polyethylene microplastics; Toxicity mechanism.
Micro(nano)plastics is an emerging contaminant in wastewater that has showed significant impacts on various biol. wastewater processes. Nevertheless, the underlying effects of micro(nano)plastics with different concentrations and sizes on the anaerobic hydrogen-producing granular sludge (HPG) were still unclear. This work firstly attempted to illustrate the microbial and physicochem. responses of HPG to a shock load of polyethylene microplastics (PE-MPs) with varied concentrations and sizes. The results revealed that the PE-MPs inhibitory effect on hydrogen production by HPG was both concentration- and size-dependent. Specifically, the increase of PE-MPs concentration and the decline of PE-MPs size to nano-sized plastics (NPs) significantly decreased the hydrogen yield, downgraded to 79.9 ± 2.6% and 63.0 ± 3.9% (p = 0.001, and 0.0002) of control, resp., at higher MPs concentration and the smaller MPs size (i.e., NPs). The higher PE-MPs concentration and PE-NPs also suppressed extracellular polymeric substances (EPS) generation more severely. The critical bio-processes involved in hydrogen production were disturbed by PE-MPs, with the extent of neg. impacts depending on the dosage and size of PE-MPs. These adverse impacts further manifested as granule disintegration and loss of cellular activity. Mechanism anal. highlighted the roles of oxidative stress, leachate released from PE-MPs, interaction between PE-NPs and granules inducing phys. crushing of HPG that led to possible direct contact between cells and toxic substances.
Water Research published new progress about Anaerobic fermentation. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, COA of Formula: C6H12O6.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts