Dear Friday Of course there are enzymes that are able to depolymerize complex compounds naturally. These enzymes come fundamentally from lignocellulolytic fungi, since the degradation of the polymeric phenol lignin which is one of the fundamental components of the cell wall of plants follows a mechanism of oxidation catalyzed by the peroxidases and laccases enzymes . These polyphenol oxidases enzymes are able to degrade contaminants that present similar structures. Peroxidases such as Lignin peroxidase (LiP), manganese peroxidase (MnP) and versatile Peroxidase (VP), are capable of degrading compounds such as: 2,4-dichlorophenol, 2,4,6-trichlorophenol, polychlorinated guayacoles, various chlorinated vanillins. In addition, depending on the enzymatic system that is capable of expending a certain species of lignocellulolytic fungus, there are some fungi that mineralize pentachlorophenol, phenanthrene and 1,1,1-trichloro-2,2-bis (4-chlorophenyl) ethane that are not common substrates for extracellular peroxidases.

On the other hand, not only extracellular enzymes have this activity but also some intracellular enzymes such as the intracellular enzyme system, cytochrome P450 monoxigenase which is present in all fungi, and apparently is involved in the degradation of some compounds such as phenanthrene, Benzo (α) pyrene and DDT.

In addition to these peroxidases, the production in ligninolytic fungi of a fourth enzyme, a phenol oxidase called laccase, was also detected. This enzyme reduces molecular oxygen to water, and through the use of certain redox compounds may be able to expand its spectrum of substrates, thus achieving the oxidation of non-phenolic portions of lignin

These ligninolytic enzymes can act separately or in cooperation, depending on whether the fungus is capable of producing one or more of these enzymes.

So I would suggest that if you want to use bioremediation as a process, you can use a lignocellulolytic fungus that expresses this type of enzymes or, on the other hand, you can use biotechnological methods to extract these enzymes and use them to detoxify these residues.

I hope you found the information useful. Greetings and good luck!