Sonochemical decolorization of acid black 210 in the presence of exfoliated graphite.
The decolorization of acid black 210 by ultrasonic irradiation in the presence of exfoliated graphite was investigated. Low pH value and large exfoliation volume of exfoliated graphite favored the ultrasonic decolorization of acid black 210. The combination method of ultrasonic waves and exfoliated graphite achieved better results than either exfoliated graphite or ultrasound alone. Improved decolorization efficiency has been observed in the present system compared to the process using a combination of ultrasound and activated carbon. In the combination method of ultrasonic waves and exfoliated graphite, approximately 99.5% of acid black 210 was removed using 0.8 g/l exfoliated graphite at a pH of 1 within 120 min at 51 degrees C.
Li
Mei
M
College of Chemistry and Environmental Science, Hebei University; Key Laboratory of Analytical Science and Technology of Hebei Province, Hezuo Road, No. 88, Baoding 071002, PR China.
Li
Ji-Tai
JT
Sun
Han-Wen
HW
D001391:Azo Compounds / Q000737:chemistry* / Q000302:isolation & purification; D002244:Carbon / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D009282:Naphthalenesulfonates / Q000737:chemistry* / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet; D013457:Sulfur Compounds / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014465:Ultrasonics
D001391:Azo Compounds; D004396:Coloring Agents; D009282:Naphthalenesulfonates; D013457:Sulfur Compounds; C525122:acid black 210; D002244:Carbon; D006108:Graphite; D006861:Hydrogen Peroxide