Through comprehensive geological and geochemical analysis of the oils and gases, it is recognized that the oils were generated from Mid-Upper Ordovician source rocks, migrated from paleo-oil-accumulations in Ordovician, and were biodegraded to produce different heavy oils before the late Hercynian orogeny (about 250 Ma), so that the oils in the Carboniferous are secondary oil accumulations.
Additionally, o-xylene, naphthalene, 1-methylnaphthalene, phenanthrene, fluorene, 2-methylquinoline, carbazole, acridine, benzothiophene, dibenzothiophene, benzofuran, dibenzofuran, pyrrole, 1-methylpyrrole, and benzene were biodegraded to some degree when oxygen was added concomitantly with nitrate (92 days after the addition of organic compounds).
Note that strongly weathered, brittle plastic material still consists of polymers with a mean molecular weight of tens of thousands g/mol, which are not biodegraded to considerable extent under relevant environmental (especially marine) conditions [25].
The present study indicated that BDE 209 was successively biodegraded to BDE 28 via a debromination process, and the proposed OH-PBDEs and bromo-pentanal supported the possible of hydroxylation and ring opening process.
In sludge, BBP was first biodegraded to produce monoester, then phthalic acid, and finally CO2 and H2O (Li et al. 2005).
In 100 μL reaction system, the XOs were completely biodegraded to xylose by 0.3 U purified Tth xynB3 β-xylosidase after 3 h, and the total monose xylose concentration reached at 360 mM.
In addition, the scaffold for the bone graft substitute should biodegrade to replace the newly formed bone.
The NOVADUR® system contains a poly d, l-lactide co-glycolide) intravitreal polymer matrix without a preservative, which slowly biodegrades to lactic acid and glycolic acid.
A common theme for various bioplastics that will replace conventional plastics is their tendency to be biodegraded, compared to petroleum-based plastics that are resistant to chemical and biological attacks.
In TPPB 5000 mg/l benzene was biodegraded up to 50.17% over a period of 168 h.
When provided with corn syrup and vitamin B12 (0.03 mol B12 per mol CF), DHM-1 grew and biodegraded up to 2,000 mg/L of CF in 180 days, with only minor transient accumulation of dichloromethane and chloromethane.
