EDTA and electricity synergetic catalyzed Fe(3+)/H2O2 process for amoxicillin oxidation.
Three oxidation processes for amoxicillin wastewater pretreatment such as Electro-Fe(3+)(EDTA)/H2O2 (EDTA: ethylenediaminetetraacetic acid), Fe(3+)(EDTA)/H2O2 and Electro-Fe(3+)/H2O2 were simultaneously discussed at pH of 7.0 (+/-0.1). It was found that the above processes could achieve 78%, 64%, 33% chemical oxygen demand (COD(cr)) removal, and 86%, 70%, 47% amoxicillin degradation respectively. Moreover, the results of biodegradability (biological oxygen demand (BOD(5))/COD(cr) ratio) showed that the Electro-Fe(3+)(EDTA)/H2O2 process was a promising way to pretreat antibiotic wastewater due to the biodegradability of the effluent improved to 0.48 compared with the cases of Fe(3+)(EDTA)/H2O2 (0.40) and Electro-Fe(3+)/H2O2 process (0.12). Therefore, it was reasonable to note that EDTA and electricity showed synergetic effect on the oxidation process. Additionally, infrared spectra (IR) were applied to concisely propose a potential degradation way of amoxicillin. The characteristic changes of H2O2 and EDTA in the oxidation process were also investigated in detail.
Shen
Ting-Ting
TT
College of Environmental Science and Engineering, Hunan University, Changsha Hunan 410082, China.
Li
Xiao-Ming
XM
Tang
Yu-Fang
YF
Wang
Juan
J
Yue
Xiu
X
Cao
Jian-Bin
JB
Zheng
Wei
W
Wang
Dong-Bo
DB
Zeng
Guang-Ming
GM
D000658:Amoxicillin / Q000737:chemistry* / Q000302:isolation & purification; D001673:Biodegradation, Environmental; D002384:Catalysis; D004492:Edetic Acid / Q000737:chemistry*; D004560:Electricity; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet; D014865:Waste Disposal, Fluid
D000658:Amoxicillin; D004492:Edetic Acid; D006861:Hydrogen Peroxide; D007501:Iron; D010100:Oxygen