Treatment of petroleum oil spill sludge using the combined ultrasound and Fenton oxidation process
| Autor: | Govindaraj Divyapriya, Deeksha Anand, Indumathi M. Nambi, K. Sivagami |
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| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Acoustics and Ultrasonics Fraction (chemistry) 02 engineering and technology 010402 general chemistry 01 natural sciences Inorganic Chemistry chemistry.chemical_compound Chemical Engineering (miscellaneous) Environmental Chemistry Radiology Nuclear Medicine and imaging Solubility Hydrogen peroxide chemistry.chemical_classification Organic Chemistry Advanced oxidation process Biodegradation 021001 nanoscience & nanotechnology 0104 chemical sciences Hydrocarbon chemistry Petroleum lipids (amino acids peptides and proteins) Particle size 0210 nano-technology Nuclear chemistry |
| Zdroj: | Ultrasonics sonochemistry. 51 |
| ISSN: | 1873-2828 |
| Popis: | In this paper, advanced oxidation process (AOP) combining ultrasound (US) and Fenton’s process was proposed for the treatment of total petroleum hydrocarbons present in oil spill sludge. The effect of several parameters like pH, ultrasonic power, weight ratio of hydrogen peroxide to iron [H2O2/Fe2+], Fenton reagent dosage, addition of salts and contact time were analyzed for the reduction of Petroleum Hydrocarbons (PHCs) in terms of hydrocarbon fractions (nC7–C10, nC11-C20). Chemical characterization of oil spill sludge was analysed by gas chromatography- mass spectrum (GC–MS) Elemental analyser, Fourier Transform Infra Red (FT-IR) Analyser and particle size analyser. Experiments were conducted for identifying the wide range of hydrocarbons fractions (nC7–C10, nC11–C20 and nC21–C30). Results shown that maximum solubilisation and PHC removal rate of up to 84.25% could be achieved at a pH of 3.0, sludge/water ratio of 1:100, ultrasonic power of 100 W with 40–50% ultrasonic amplitude, a H2O2/Fe2+ weight ratio of 10:1, and an ultrasonic treatment time of 10 min. The lower and medium fractions (nC7–C10, nC11–C20) were amenable to degradation due to ultrasound treatment compared to the heavier carbon fraction (nC21–C30). The study concludes that the combined sono-Fenton (SF) process significantly enhanced the degradation of oil spill sludge as compared to ultrasound treatment and Fenton oxidation alone. The enhanced solubilisation achieved by US alone is highly beneficial when we couple this with biodegradation which will be greatly facilitated by the enhanced solubility. |
| Databáze: | OpenAIRE |
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