TABLE 8.
Strains for the valorization of depolymerization products of plastics.
Plastics | Depolymerization methods | Depolymerization products | Strains | Metabolites | Yields | References |
PET | Pyrolysis at 450°C | TPA | Pseudomonas putida GO16, Pseudomonas putida GO19, Pseudomonas frederiksbergensis GO23 | PHA | 8.4 mg⋅l–1⋅h–1 | Kenny et al., 2008 |
PET | Pyrolysis | TPA | Pseudomonas putida GO16 | PHA | 108.8 mg⋅l–1⋅h–1 | Kenny et al., 2012 |
PET | – | EG | Pseudomonas putida KT2440 | PHA | 0.06 g PHA per g EG | Franden et al., 2018 |
PS | – | Styrene | Pseudomonas putida CA-3 | PHA | 0.11 g PHA per g carbon | Ward et al., 2005 |
PS | – | Styrene | Pseudomonas putida CA-3 | PHA | 3.36 g⋅l–1 | Nikodinovic-Runic et al., 2011 |
PS | Pyrolysis at 520°C | Styrene | Pseudomonas putida CA-3 | PHA | 62.5 mg PHA per g styrene | Ward et al., 2006 |
PS | Pyrolysis | Styrene | Pseudomonas putida CA-3 | PHA | 0.28 g PHA per g styrene | Goff et al., 2007 |
PE | Pyrolysis | Paraffins from C8 to C32 | Pseudomonas aeruginosa PAO-1 | PHA | 25% of the cell dry weight | Guzik et al., 2014 |
PE | Pyrolysis | Hydrocarbons | Ralstonia eutropha H16 | PHA | 0.46 g⋅l–1 | Johnston et al., 2017 |
PE | Pyrolysis in air | Oxidized hydrocarbons | Ralstonia eutropha H16 | PHA | 1.24 g⋅l–1 | Radecka et al., 2016 |
PP | Pyrolysis at 540°C | Branched chain fatty alcohols and alkenes | Yarrowia lipolytica 78-003 | Fatty acids | 492 mg⋅l–1 over 312 h | Mihreteab et al., 2019 |
PP | Thermal oxidation at 80–100°C in the oxygen–ozone mixture | Oxidized PP fragments | Ralstonia eutropha H16 | PHA | 1.36 g⋅l–1 | Johnston et al., 2019 |
– | – | n-hexadecane | Renibacterium salmoninarum 27BN | Rhamnolipid | 0.92 g⋅l–1 | Christova et al., 2004 |
– | – | n-hexadecane | Dietzia maris As-13-3 | Di-rhamnolipid | 120 mg⋅l–1 | Wang et al., 2014 |