CATEGORY: OILY SLUDGE
Journal of Environmental Health Science &
Engineering 2014, 12:31
The effects of Fenton process on the removal of
petroleum hydrocarbons from oily sludge in Shiraz oil refinery, Iran
Mehdi Farzadkia (1), Mansooreh Dehghani (2) and
Maryam Moafian (2)
Abstract
Due to the high concentrations of total
petroleum hydrocarbons (TPH) in oily sludge and their environmental hazards,
the concern regarding their effects on health and the environment has
increased. The main objective of this research was focused on evaluating the
feasibility of using Fenton process in removing TPH in oily sludge from Shiraz oil
refinery, Southern Iran.
Results: To determine optimum conditions, four
different parameters were assessed at four different levels using Taguchi
method. According to data, the optimum conditions were as follows: the reaction
time of 1 hour, H2O2 to sample mass ratio of 15, H2O2 to Fe (II) molar ratio of
10 and pH of 5. The maximum TPH reduction rate was 36.47%. Because of the
semi-solid nature of the sample and the hydroxyl radicals mainly generated in
the aqueous solution, TPH reduction rate greatly improved by adding water.
Ultimately, by adding 40 ml water per gram of the oily sludge under optimized
conditions, the reduction rate of 73.07% was achieved.
Conclusions: The results demonstrated that this method can be used as a
pre-treatment method for the oily sludge. Moreover, a complementary treatment
is necessary to reach the standard limit.
Free Full Text Source: http://www.biomedcentral.com/content/pdf/2052-336X-12-31.pdf
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