In an article, author is Chen, Jing, once mentioned the application of 108-55-4, SDS of cas: 108-55-4, Name is Dihydro-2H-pyran-2,6(3H)-dione, molecular formula is C5H6O3, molecular weight is 114.0993, MDL number is MFCD00006679, category is Tetrahydropyrans. Now introduce a scientific discovery about this category.
Removal of gaseous tetrahydrofuran via a three-phase airlift bioreactor loaded with immobilized cells of GFP-tagged Pseudomonas oleovorans GDT4
Tetrahydrofuran (THF) is a common highly toxic cyclic aliphatic ether that frequently exists in waste gases. Removal of gaseous THF is a serious issue with important environmental ramifications. A novel three-phase airlift bioreactor (TPAB) loaded with immobilized cells was developed for efficient THF removal from gas streams. An effective THF-degrading transformant, Pseudomonas oleovorans GDT4, which contains the pTn-Mod-OTc-gfp plasmid and was tagged with a green fluorescent protein (GFP), was constructed. Continuous treatment of THF-containing waste gases was succeeded by the GFP-labelled cells immobilized with calcium alginate and activated carbon fiber in the TPAB for 60 days with >90% removal efficiency. The number of fluorescent cells in the beads reached 1.7 x 10(11) cells.g(-1) of bead on day 10, accounting for 83.3% of the total number of cells. The amount further increased to 3.0 x 10(11) cells.g(-1) of bead on day 40. However, it decreased to 2.5 x 10(11) cells.g(-1) of bead with a substantial increase in biomass in the liquid because of cell leakage and hydraulic shock. PCR-DGGE revealed that P. oleovorans was the dominant microorganism throughout the entire operation. The maximum elimination capacity was affected by empty bed residence time (EBRT). The capacity was only 25.9 g M-3.h(-1) at EBRT of 80 s, whereas it reached 37.8 g m(-3).h(-1) at EBRT of 140 s. This work provides an alternative method for full-scale removal of gaseous THF and presents a useful tool for determining the biomass of a specific degrader in immobilized beads. (C) 2020 Elsevier Ltd. All rights reserved.
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Reference:
Tetrahydropyran – Wikipedia,
,Tetrahydropyran – an overview | ScienceDirect Topics