Removal of Reactive Green 19 dye from synthetic wastewater using electrocoagulation and aluminum electrodes

Authors

1 Department of Environmental Health, Zahedan University of Medical Sciences, Zahedan, Iran

2 Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran

3 Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran

Abstract

Textile dyeing is considered to be one of the major industrial sources of high rates of organic and aromatic compounds. Conversely, these compounds have become a significant environmental problem. Many methods have been investigated for color removal from dye-containing wastewater. In this research, the efficiency of the electrocoagulation (EC) process with aluminum electrodes in the removal of Reactive Green 19 (RG-19) dye from synthetic solutions was studied. The experiments were conducted in a batch reactor equipped with 4 aluminum electrodes with a volume of 2 l. Dye concentrations were measured (λmax = 630 nm). The effects of operating parameters, such as voltage, reaction time, initial dye concentration, energy consumption, pH, KCl concentration, and inter-electrode distance, on removal efficiency were investigated. The highest removal efficiency of RG-19 was found to be 33.49, 60.32, 72.43, 93.63, and 94.91 percent for initial voltage of 10, 20, 30, 40 and 50 v, respectively, in optimum conditions (pH = 11, KCL concentration = 0.005 M, and distance = 1 cm). The removal was effectively reduced to less than 99.88% when the initial dye concentration increased from 25 to 150 mg/l. In addition, by increasing KCl concentration and decreasing electrode distance, removal efficiency increased considerably. Based on the results, EC process by aluminum electrodes is an efficient and suitable method for reactive dye removal from wastewater. 

Keywords

References

Correia VM, Stephenson T, Judd SJ. Characterisation of textile wastewaters-a review. Environmental Technology 1994; 15(10): 917-29.
Daneshvar N, Ashassi-Sorkhabi H, Tizpar A. Decolorization of orange II by electrocoagulation method. Separation and Purification Technology 2003; 31(2): 153-62.
Golder AK, Hridaya N, Samanta AN, Ray S. Electrocoagulation of methylene blue and eosin yellowish using mild steel electrodes. J Hazard Mater 2005; 127(1-3): 134-40.
Tang WZ, Huren A. UV/TiO2 photocatalytic oxidation of commercial dyes in aqueous solutions. Chemosphere 1995; 31(9): 4157-70.
Mollah MYA, Pathak SR, Patil PK, Vayuvegula M, Agrawal TS, Gomes JAG, et al. Treatment of orange II azo-dye by electrocoagulation (EC) technique in a continuous flow cell using sacrificial iron electrodes. Journal of Hazardous Materials 2004; 109(1?3): 165-71.
An H, Qian Y, Gu X, Tang WZ. Biological treatment of dye wastewaters using an anaerobic-oxic system. Chemosphere 1996; 33(12): 2533-42.
Buitron G, Quezada M, Moreno G. Aerobic degradation of the azo dye acid red 151 in a sequencing batch biofilter. Bioresource Technology 2004; 92(2): 143-9.
Lin SH, Peng CF. Treatment of textile wastewater by electrochemical method. Water Research 1994; 28(2): 277-82.
Slokar YM, Majcen Le Marechal A. Methods of decoloration of textile wastewaters. Dyes and Pigments 1998; 37(4): 335-56.
Nadi H, Alizadeh M, Ahmadabadi M, Yari AR, Hashemi S. Removal of reactive dyes (green, orange, and yellow) from aqueous solutions by peanut shell powder as a natural adsorbent. Arch HygSci 2012; 1(2): 41-7.
Low KS, Lee CK. Quaternized rice husk as sorbent for reactive dyes. Technology 1997; 61(2): 121-5.
Szpyrkowicz L, Naumczyk J, Zilio-Grandi F. Electrochemical treatment of tannery wastewater using TiPt and Ti/Pt/Ir electrodes. Water Research 1995; 29(2): 517-24.
Lin SH, Peng CF. Continuous treatment of textile wastewater by combined coagulation, electrochemical oxidation and activated sludge. Water Research 1996; 30(3): 587-92.
Barrera-Diaz C, Urena-Nunez F, Campos E, Palomar-Pardave M, Romero-Romo M. A combined electrochemical-irradiation treatment of highly colored and polluted industrial wastewater. Radiation Physics and Chemistry 2003; 67(5): 657-63.
Can OT, Kobya M, Demirbas E, Bayramoglu M. Treatment of the textile wastewater by combined electrocoagulation. Chemosphere 2006; 62(2): 181-7.
Bayramoglu M, Eyvaz M, Kobya M. Treatment of the textile wastewater by electrocoagulation: Economical evaluation. Chemical Engineering Journal 2007; 128(2?3): 155-61.
Do JS, Chen ML. Decolourization of dye-containing solutions by electrocoagulation. Journal of Applied Electrochemistry 1994; 24(8): 785-90.
Ghosh D, Medhi CR, Solanki H, Purkait K. Decolorization of Crystal Violet Solution by Electrocoagulation. Journal of Environmental Protection Science 2008; 2(1): 25-35.
Wang CT, Chou WL, Kuo YM. Removal of COD from laundry wastewater by electrocoagulation/electroflotation. J Hazard Mater 2009; 164(1): 81-6.
Moreno-Casillas HA, Cocke DL, Gomes JAG, Morkovsky P, Parga JR, Peterson E. Electrocoagulation mechanism for COD removal. Separation and Purification Technology 2007; 56(2): 204-11.
Sengil IA, Ozacar M. The decolorization of C.I. Reactive Black 5 in aqueous solution by electrocoagulation using sacrificial iron electrodes. J Hazard Mater 2009; 161(2-3): 1369-76.
Basiri Parsa J, Rezaei Vahidian H, Soleymani AR, Abbasi M. Removal of Acid Brown 14 in aqueous media by electrocoagulation: Optimization parameters and minimizing of energy consumption. Desalina 2011; 278(1-3): 295-302.
Daneshvar N, Oladegaragoze A, Djafarzadeh N. Decolorization of basic dye solutions by electrocoagulation: an investigation of the effect of operational parameters. J Hazard Mater 2006; 129(1-3): 116-22.
Daneshvar N, Khataee AR, Amani Ghadim AR, Rasoulifard MH. Decolorization of C.I. Acid Yellow 23 solution by electrocoagulation process: investigation of operational parameters and evaluation of specific electrical energy consumption (SEEC). J Hazard Mater 2007; 148(3): 566-72.

Files

Share

How to cite

Statistics