TY - JOUR
T1 - Comparison of efficiency of photochemical and sonochemical processes combined with hydrogen peroxide in removal of direct blue 71(DB71) from aqueous solution
T2 - A kinetic study
AU - Rezaie, Reza
AU - Maleki, Afshin
AU - Siboni, Mehdi Shirzad
AU - Rahimi, Marzieh
AU - Mohammadi, Mahnaz
PY - 2011
Y1 - 2011
N2 - Background and Aim: One of the important sources of environmental pollution existing in different industrial wastewater, including loom wastewater are dyes which are harmful for human health and environment. The purpose of this study was to investigate the efficiency of photochemical and sonochemical processes combined with hydrogen peroxide in removal of DB71 from aqueous solution. Material and Methods: This study was an experimental - laboratory study. At first, a reactor was designed and made. Then, optimum pH was determined which was 7 for photochemical and 3 for sonochemical process in constant condition. The effects of initial concentration of hydrogen peroxide, DB71 and contact time were studied at the constant optimum pH. Then data were interpreted and analyzed by use of Excel software and regression coefficient. Result: The results of this study showed that with increased initial concentration of DB71, its removal decreased. But removal efficiency of DB71 increased by increasing contact time and initial concentration of hydrogen peroxide. In addition, kinetic parameters were obtained by application of first-order (Langmuir-Hinshelwood) equations. Conclusion: The results showed that UV/ H2O2 and US/H2O2 processes can be effective in the removal of DB71 from aqueous solutions. Considering dye removal efficiency and availability, photochemical process combined with hydrogen peroxide can be recommended as a fast effective method for removal of dyes from aqueous solutions. Key word: Direct Blue 71, Photochemical process, Sonochemical process, Aqueous solution.
AB - Background and Aim: One of the important sources of environmental pollution existing in different industrial wastewater, including loom wastewater are dyes which are harmful for human health and environment. The purpose of this study was to investigate the efficiency of photochemical and sonochemical processes combined with hydrogen peroxide in removal of DB71 from aqueous solution. Material and Methods: This study was an experimental - laboratory study. At first, a reactor was designed and made. Then, optimum pH was determined which was 7 for photochemical and 3 for sonochemical process in constant condition. The effects of initial concentration of hydrogen peroxide, DB71 and contact time were studied at the constant optimum pH. Then data were interpreted and analyzed by use of Excel software and regression coefficient. Result: The results of this study showed that with increased initial concentration of DB71, its removal decreased. But removal efficiency of DB71 increased by increasing contact time and initial concentration of hydrogen peroxide. In addition, kinetic parameters were obtained by application of first-order (Langmuir-Hinshelwood) equations. Conclusion: The results showed that UV/ H2O2 and US/H2O2 processes can be effective in the removal of DB71 from aqueous solutions. Considering dye removal efficiency and availability, photochemical process combined with hydrogen peroxide can be recommended as a fast effective method for removal of dyes from aqueous solutions. Key word: Direct Blue 71, Photochemical process, Sonochemical process, Aqueous solution.
KW - Aqueous solution
KW - Direct blue 71
KW - Kinetic
KW - Photochemical process
KW - Sonochemical process
UR - http://www.scopus.com/inward/record.url?scp=79957817728&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:79957817728
SN - 1560-652X
VL - 16
SP - 38
EP - 47
JO - Scientific Journal of Kurdistan University of Medical Sciences
JF - Scientific Journal of Kurdistan University of Medical Sciences
IS - 1
ER -