they are controlled by QS (quorum sensing)-α-hydroxyketones, diffusion signalling
factors, autoinducer-2, peptides, and acyl homoserine lactones main cell message
process, which aid in the signalling of metabolite molecules. The alteration of the
genetic materials of the QS can aid in controlling certain characters (chemotaxis,
motility, catabolic gene expression, horizontal gene transfer, exopolysaccharide
manufacturing, and biosurfactant synthesis) that are important in the utilization of
the biofilms in environmental management of pollution. The authors in summary
stated that QS can be utilized via the fabrication of the QS signals can be used for the
fabrication of assembled biofilms which will improve kinetic degradation of environmental concerned pollutants.
Singh et al. (2006) did a review of the environmental implication of biofilms in
the bioremediation of pollutants. The authors recounted that biofilms are known for
the treatment of obstinate chemicals because of their aptitude to restrain toxic
compound and their high matrix microbial dry mass. This entire process is facilitated
by the microbial biofilm genome in the aggregated strains. This also spurs the
microbes to be resistant and have high chemotaxis potential towards increase in
concentration of the pollutants. In summary, the authors recommend several
approaches to be employed in boosting the efficiency of strains of microbial
biofilms. An enhanced microbial strain will optimize the population growth and
vigour varieties of the community of microbes towards severe environmental
stressors.
Turki et al. (2017) tested and evaluated the efficiency of biofilms towards the
remediation and purification of contaminants in wastewater as well as the characterization of the microbial community therein. The authors discovered the following
strains of microbes: Pantoea agglomerans, Cronobacter sakazakii, and
Enterobacter agglomerans in the wastewater samples. A further analysis on the
sample revealed that the community of Salmonella was not impacted by the RB
system. Again, the use of C254-UV is inactivated, which revealed that the community of the bacterial had different resilient results in a secondary treated wastewater
chamber. There was no identification of Salmonella sp. at 1440 milliwatts per square
centimeter (mW/cm
2 ) dose. The result obtained showed that there was no presence
of Salmonella in the sample. The authors recommend the utilization of Pantoea
agglomerans, Cronobacter sakazakii, and Enterobacter agglomerans as indicators
and microbial biofilms for biodegradation of wastewater pollutants.
Farber et al. (2019) tested and evaluated the bioremediation and bioaugmentation
of synthetic diesel polluted soil using aggregations of microbial biofilm combined
with wood wastes. The authors recounted that bioaugmentation is an alternative to
bioremediation, which assist in boosting the community of microorganisms that
have the potential in degrading soil pollutants such as diesel. The aggregation of the
soil degrading microbes were cultivated on a wood waste that was pre-treated with
plasma that was designed to increase the microbial-diesel degrade levels. The results
of the study showed that the biofilm capacity of the wood-plasma got to a level of
0.53 Æ 0.02 OD 540 nm on day 7 when compared to the non-treated wood waste
(0.34 Æ 0.02). A degradation rate of 9.3 mg and 7.8 mg at day 1 respectively were
noticed in the plasma untreated and treated biofilms in the synthetic polluted diesel at
234
C. O. Adetunji and O. A. Anani
factors, autoinducer-2, peptides, and acyl homoserine lactones main cell message
process, which aid in the signalling of metabolite molecules. The alteration of the
genetic materials of the QS can aid in controlling certain characters (chemotaxis,
motility, catabolic gene expression, horizontal gene transfer, exopolysaccharide
manufacturing, and biosurfactant synthesis) that are important in the utilization of
the biofilms in environmental management of pollution. The authors in summary
stated that QS can be utilized via the fabrication of the QS signals can be used for the
fabrication of assembled biofilms which will improve kinetic degradation of environmental concerned pollutants.
Singh et al. (2006) did a review of the environmental implication of biofilms in
the bioremediation of pollutants. The authors recounted that biofilms are known for
the treatment of obstinate chemicals because of their aptitude to restrain toxic
compound and their high matrix microbial dry mass. This entire process is facilitated
by the microbial biofilm genome in the aggregated strains. This also spurs the
microbes to be resistant and have high chemotaxis potential towards increase in
concentration of the pollutants. In summary, the authors recommend several
approaches to be employed in boosting the efficiency of strains of microbial
biofilms. An enhanced microbial strain will optimize the population growth and
vigour varieties of the community of microbes towards severe environmental
stressors.
Turki et al. (2017) tested and evaluated the efficiency of biofilms towards the
remediation and purification of contaminants in wastewater as well as the characterization of the microbial community therein. The authors discovered the following
strains of microbes: Pantoea agglomerans, Cronobacter sakazakii, and
Enterobacter agglomerans in the wastewater samples. A further analysis on the
sample revealed that the community of Salmonella was not impacted by the RB
system. Again, the use of C254-UV is inactivated, which revealed that the community of the bacterial had different resilient results in a secondary treated wastewater
chamber. There was no identification of Salmonella sp. at 1440 milliwatts per square
centimeter (mW/cm
2 ) dose. The result obtained showed that there was no presence
of Salmonella in the sample. The authors recommend the utilization of Pantoea
agglomerans, Cronobacter sakazakii, and Enterobacter agglomerans as indicators
and microbial biofilms for biodegradation of wastewater pollutants.
Farber et al. (2019) tested and evaluated the bioremediation and bioaugmentation
of synthetic diesel polluted soil using aggregations of microbial biofilm combined
with wood wastes. The authors recounted that bioaugmentation is an alternative to
bioremediation, which assist in boosting the community of microorganisms that
have the potential in degrading soil pollutants such as diesel. The aggregation of the
soil degrading microbes were cultivated on a wood waste that was pre-treated with
plasma that was designed to increase the microbial-diesel degrade levels. The results
of the study showed that the biofilm capacity of the wood-plasma got to a level of
0.53 Æ 0.02 OD 540 nm on day 7 when compared to the non-treated wood waste
(0.34 Æ 0.02). A degradation rate of 9.3 mg and 7.8 mg at day 1 respectively were
noticed in the plasma untreated and treated biofilms in the synthetic polluted diesel at
234
C. O. Adetunji and O. A. Anani