Potential Biodeteriogens of Indoor and Outdoor Surfaces (Coated With Gloss, Emulsion and Textcoat Paints)

Abstract

Potential Biodeteriogens of indoor and outdoor surfaces (coated with gloss, emulsion and text coat paints) within the University of Port Harcourt, Nigeria were investigated. Potential Biodeteriogens implicated in deterioration of painted surfaces were bacteria, fungi, microalgae and cyanobacteria. The total heterotrophic bacteria counts and total fungal counts for outdoor and indoor painted surfaces ranged from 2.8 x 10 6 to 9.00 x 10 6 cfu/g paint scrape, 1.56 x 10 4 to 6.6 x 10 4 cfu/g paint scrape; and 1.1 x 10 6 to 6.5 x 10 6 cfu/g paint scrapes, 1.31 x 10 4 to 9.8 x 10 4 cfu/g paint scrapes respectively. The result of THB and TF count expressed graphically showed surfaces with increasing order of microbial load: Gloss paints < Text coat paint < Emulsion paints. Predominant bacterial genera isolated from the surfaces include Bacillus (29.0%), Pseudomonas (22.6%),

Biodegradation of oil-based paint by Bacillus species monocultures isolated from the paint warehouses

“…However, to date, different genera belonging to Pseudomonas, Micrococcus, Sphingomonas, Thiobacillus, Mycobacterium, Clostridium, Alcaligenes, Bacillus, Flavobacterium, Arthrobacter, Gallionella, and Shewanella have been characterized and reported in the literature as paint and painted surface-degrading strains (Gorbushina et al 2004;Ravikumar et al 2012). Concurrently, Bacillus species were also predominant among other bacterial species that have been most frequently isolated in several studies (Odokuma et al 2013).…”

“…In addition, the biodegradation efficiencies were significantly higher with glucose as an additional carbon source, in case of all the three Bacillus isolates. The potency of microbes as agents for degradation of several compounds thus indicates that biological treatment can be a promising alternative to attenuate environmental impact caused by pollutants (Bhattacharya et al 2012;Odokuma et al 2013). Similarly, Odokuma et al (2013) also reported that Bacillus sp.…”

“…Paints are stable mechanical mixtures of one or more pigments and various chemical components (Odokuma et al 2013;Sharma 2006). The paints consist of: (a) binder/additive, which adhere paints to the surface, (b) pigments, which give the paint a color and prevent corrosion, and (c) solvents to make the paint spreadable (Ravikumar et al 2012).…”

“…The paints consist of: (a) binder/additive, which adhere paints to the surface, (b) pigments, which give the paint a color and prevent corrosion, and (c) solvents to make the paint spreadable (Ravikumar et al 2012). The modern household paints fall into two broad categories, i.e., (1) 'orthodox', the oil-based or solvent-based paints, thinned with mineral turpentine or other organic solvents, and (2) 'emulsion paints', the water-based vinyl or acrylic paints that may be thinned with water (Odokuma et al 2013).…”

Bioremediation of Oil-Based Paint from Aqueous Media by Novel Indigenous Brevibacillus parabrevis Strain NAP3 and its Toxicity Assessment

“…However, several studies have shown that Bacillus sp exhibited the highest prevalence on painted surfaces, paintings, and paints. This may be attributed to the survival strategies evolved by it [33].…”