Phenolic compounds or phenols are a group of aromatic compounds that comprises a hydroxyl
group (OH) that is directly bonded to an aromatic ring. Phenols are injurious to organisms even
at even low concentrations with many of them are categorized as dangerous pollutants because of
their likely harm to human well-being. This review attempts to discuss the various merits and
demerits of immobilization matrices employed for phenol-degrading microorganisms’
immobilization. One of several key points of cellular immobilization is the capacity to protect
bioremediation agents towards toxic levels of specific toxicants and safeguarding from predatory
microorganisms. However, this shielding course of action should never impede the diffusion of
substrates into the pores of the immobilization structure. In the end the choice of a particular
immobilization method will strongly hinge on aspects of economy, safety and efficacy.
The Q10 value is tied to an increase in the surrounding temperature with an increase in 10 ◦C,
and usually resulted in a doubling of the reaction rate. When this happens, the Q10 value for the
reaction is 2. This value holds true to numerous biological reactions. To date, the Q10 value for
the biodegradation of phenol is almost not reported. The Q10 values can be determined from the
Arrhenius plots. In this study, the growth rate or biodegradation rates in logarithmic value for
the bacterium Pseudomonas sp. AQ5-04 was plotted against 1000/temperature (Kelvin) and the
slope of the Arrhenius curve is the value of the Ea, which was utilized to obtain the Q10. The
value obtained in this work was 1.834, which is slightly lower than the normal range of between
2 and 3 for the biodegradation rates of hydrocarbon in general and shows that this bacterium is a
very efficient phenol-degrading bacterium.