acid sludge

[′as·əd ‚sləj]

(chemical engineering)

The residue left after treating petroleum oil with sulfuric acid for the removal of impurities.

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The AP reported that cellphone video shot by survivors show "blue-green puddles of acid sludge [surrounding] corpses without heads and torsos that jut out from the earth, skeletal hands seeming to claw at the ground."

Mass Graves of Rohingya Discovered in Myanmar: Corpses without Heads, Faces Burned with Acid

In acid treatment process,oil is treated with sulfuric acid to remove aromatics and other non-hydrocarbons, followed by treatment with clay to neutralize and improve appearance, color and color stability by removing colored and colorless pigments and also improve oxidation stability of the final oil products [8-10].The acid sludge at the bottom, formed from the acid treatment of oil is a black or dark brown in color and containing some harmful sulfonic acid and some impurities [11,12].

IMPROVING DIFFERENT PARAMETERS OF TRANSFORMER OIL FROM PAKISTAN NATIONAL REFINERY LIMITED

Chemical characteristics of coastal acid sulfate soil, mine site acid sulfate soil, seawater-neutralised red mud, and sewage sludge used in the Australian component of this study Parameter Coastal Mine site Bauxsol[TM] Sewage potential acid sludge acid sulfate sulfate soil soil PH (A) 6.9 3.63 10.5 6.23 EC (dS/m) (A) 2.55 0.883 3.44 0.49 Sulfide-S (%) (G) 1.52 0.56 ANC (mmol/kg) 256 3550 TAA (mmol/kg) (F) 106 Mn (mg/kg) (B) 11 <0.005 489 Cd (mg/kg) (B) 0.9 <0.005 9.6 Cu (mg/kg) (B) 16 0.035 433 Zn (mg/kg) (B) 17.9 0.011 685 Pb (mg/kg) (B) <0.005 145 N[H.sub.4] (mg/kg) (E) b.d.l.

Acid neutralising capacity of two different bauxite residues (red mud) and their potential applications for treating acid sulfate water and soils

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