Comparison of polycyclic aromatic hydrocarbons emission from thermal treatment of petroleum sludge cake in the presence of different additives

• Main Authors: Pakpahan E.N., Isa M.H., Kutty S.R.M., Chantara S., Wiriya W., Faye I.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-84861475399&partnerID=40&md5=0f9f4d453feeb4a2b444b1b9a6d099fe; http://cmuir.cmu.ac.th/handle/6653943832/6797
• Institution: Chiang Mai University

This study evaluates effectiveness of 4 additives [CaO, Ca(OH) 2 + NaHCO 3, H 2O 2, and FeSO 4 + H 2O 2] in thermal degradation of hazardous polycyclic aromatic hydrocarbons (PAHs) in petroleum sludge cake. Residual concentrations of 16 priority PAHs were determined using GC-MS. Total PAH conc. was found as: gas, 3.11 × 10 -4 - 4.36 × 10 -4 ppmv; particulate, 7.92 × 10 -5 - 5.24 × 10 -4 mg/m 3; and residue, 1.37 × 10 -4 - 1.07 × 10 0 μg/g. Total toxicity equivalence of PAHs relative to that of benzo[a]pyrene (BaP) was found as: gas, 3.11 × 10 -7 - 4.41 × 10 -7; particulate, 3.87 × 10 -7 - 3.85 × 10 -5; and residue, 6.17 × 10 -7 - 9.65 × 10 -3. Ca(OH) 2 + NaHCO 3 was most suitable due to least emission of high molecular weight PAHs, lower equivalent carcinogenicity of products, and lower concentrations of PAHs in gas, particulate and residue.