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Abstract
Two contaminated soils were studied, the first is soil of Tanta nearest to
petroleum compound , and the second is soil of Mustorod adjacent to
petroleum companies group. Total petroleum hydrocarbons (TPH) were
analyzed by Gas Chromatography (GC) in soil samples of the two polluted
areas at different distances from the pollution sources. Available contents
of some heavy metals were also estimated. The resulted data showed the
presence of heavy metals and TPH especially paraffins by values highly
exceeded the permissible values. To remedy these hydrocarbons, we used
humax (humic acid 85 %) as a remedy in an isolated experiment. Humax
was added with percents 0, 7 and 11 % to soil samples polluted with crude
oil by rates 2, 4 and 6 % . TPH were examined after 3 months of treatment.
Application of humax reduced TPH by percents ranged between 16 – 19 %
and 24 – 30 % when 7 and 11 % of humax were applied, respectively.