Mercury
Mercury
Mercury
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Degradation of PCBs<br />
• Substrate sludge contains more PCBs with less Cl<br />
content while upper sludge contains more PCBs with<br />
more Cl content, because in the upper strata active soft<br />
soil, PCBs with less Cl content are easily degraded by<br />
microorganizm while PCBs with more Cl content are<br />
relatively stable.<br />
• Water solubility is also a factor. PCBs with higher solubility<br />
are easily biodegraded.<br />
• There is a marked concentration of PCBs when it comes<br />
to biodegradation, which is the lowest required<br />
concentration of PCBs for them to be biodegraded.
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