Changes

==Factors affecting biodegradation of hydrocarbons==

==Factors affecting biodegradation of hydrocarbons==

Temperature is an important factor affecting hydrocarbon biodegradation rate. The optimum temperatures for hydrocarbon biodegradation are dependent on the environment of the hydrocarbons. For instance, Figure 1 shows that the highest biodegradation rate for soil environment will occur between 30-40 oC, for freshwater environment between 20-30 oC and for marine environment between 15-20 oC.<ref name="6Das" />

Temperature is an important factor affecting hydrocarbon biodegradation rate. The optimum temperatures for hydrocarbon biodegradation are dependent on the environment of the hydrocarbons. For instance, Figure 1 shows that the highest biodegradation rate for soil environment will occur between 30-40 °C, for freshwater environment between 20-30 °m³C and for marine environment between 15-20 °C.<ref name="6Das" />

[[File:GeoWikiWriteOff2021-Aljezen-Figure1.jpg|framed|center|{{figure number|1}}summarizes the optimum biodegradation rates depending on the environment  and the needed temperature.<ref name="6Das" />]]

[[File:GeoWikiWriteOff2021-Aljezen-Figure1.jpg|framed|center|{{figure number|1}}summarizes the optimum biodegradation rates depending on the environment  and the needed temperature.<ref name="6Das" />]]

==What is the mechanism of hydrocarbon biodegradation?==

==What is the mechanism of hydrocarbon biodegradation?==

There are two main pathways for hydrocarbon biodegradation. The first occurs in the presence of oxygen (aerobic). The second process can occur in the absence of oxygen (anaerobic) The aerobic mechanism is highlighted in figure 2.

There are two main pathways for hydrocarbon biodegradation. The first occurs in the presence of oxygen (aerobic). The second process can occur in the absence of oxygen (anaerobic) The aerobic mechanism is highlighted in [[:File:GeoWikiWriteOff2021-Aljezen-Figure2.jpg|Figure 2]].

[[File:GeoWikiWriteOff2021-Aljezen-Figure2.jpg|framed|center|{{figure number|2}} shows the mechanism to biodegrade hydrocarbons with the presence of oxygen.<ref name="6Das" />]]

[[File:GeoWikiWriteOff2021-Aljezen-Figure2.jpg|framed|center|{{figure number|2}} shows the mechanism to biodegrade hydrocarbons with the presence of oxygen.<ref name="6Das" />]]