Fig 1.
Schematic diagram on P(3HB) coating procedure.
Table 1.
The experimental setup included three replicate samples for each treatment, with an additional two concrete samples serving as experimental controls.
Fig 2.
Filtration tank coupled with sand, coral and protein skimmer respectively.
Samples were placed in a floating tray.
Fig 3.
Distinctive SEM images showcasing various treatment effects on concrete surfaces.
(A) Untreated green concrete surface, (B) melted 1% w/v P(3HB) and (C) melted 6% w/v P(3HB) concrete sample.
Fig 4.
FTIR spectra analysis of concrete samples.
(a) Extracted P(3HB) powder, (b) G-11, (c) G-13, (d) G-16, (e) G-61, (f) G-63, (g) G-66, and (h) green concrete control, GO.
Table 2.
EDX analysis to compare the elemental composition of the surface P(3HB) coatings at various treatment.
Fig 5.
Comparative analysis of biofilm growth after 28 days of different treatments.
Fig 6.
Microbial abundance of different treatment.
Fig 7.
Depolymerase activity of P(3HB)-degrading bacteria as evidenced by clear zone formation.
Table 3.
Number of P(3HB)-degrading bacteria strains isolated from each treatment.
Fig 8.
Phylogenetic tree based on 16S rRNA gene sequences comparison among isolated marine P(3HB)-degrading bacteria.
The scale bar represents 2% estimated sequence divergence. Bootstrap values (%) were calculated from 1000 trials. Accession numbers are indicated in parentheses.
Fig 9.
Schematic diagram of degradation of P(3HB)-coated concrete in marine environment.