Ultrasonic treatment of biologically treated baker’s yeast effluent

The aim of this study was to examine the removal of color and chemical oxygen demand COD of biologically treated baker’s yeast effluent with ultrasonic irradiation. An ultrasonic homogenizator with 20 kHz frequency was used for this purpose. TiO2/ZnO composite was used as a sonocatalyst. The effect of the amount of catalyst on color and COD removal was investigated. According to results, by using ultrasound and TiO2/ZnO composite, decolorization increases until the optimum of the catalyst amount. The highest decolorization was obtained at 0.15 g/L of catalyst concentration. COD removal was 17% with ultrasonic irradiation and increased to 33% when using ultrasound along with the catalyst at the optimum amount. The effect of the solution pH on ultrasonic decolorization was also investigated in this study

Keywords:

Baker’s Yeast Effluent, Decolarization Sonocatalyst, Ultrasonic Irradiation.,

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1. Chandra R, Bharagava RN, Rai V. Melanoidins as major colourant in sugarcane molasses based distillery effluent and its degradation. Bioresource Technology 99 (2008) 4648-4660.
2. Satsawali Y, Balakrishnan N. Wastewater treatment in molasses-based alcohol distilleries for COD and color removal: A review. Journal of Environmental Management 86 (2008) 481-497.
3. Pena M, Coca M, Gonzalez G, Rioja R, Garcia MT. Chemical oxidation of wastewater from molasses fermantation with ozone. Chemosphere 51 (2003) 893-900
4. Liang Z, Wang Y, Zhou Y, Liu H, Wu Z. Variables affecting melanoidins removal from molasses wastewater by coagulation/flocculation. Separation and Purification Technology 68 (2009) 382-389.
5. Joseph CG, Puma GL, Bono A, Krishnaiah D. Sonophotocatalysis in advanced oxidation process: A short review. Ultrasonics Sonochemistry 16 (2009) 583-589.
6. Moumeni O, Hamdaoui O. Intensification of sonochemical degradation of malachite green by bromide ions. Ultrasonics Sonochemistry 19 (2012) 404-409.
7. Abdullah AZ, Liang PY. Heat treatment effects on the characteristics and sonocatalytic performance of TiO2 in the degradation of organic dyes in aqueous solution. Journal of Hazardous Materials 173 (2010) 159-167.
8. Gao J, Jinag R, Wang J, Kang P, Wang B, Li Y, Li K, Zhang X. The investigation of sonocatalytic activity of Er3+:YAlO3/ TiO2-ZnO composite in azo dyes degradation. Ultrasonics Sonochemistry 18 (2011) 541-548.
9. Gao J, Jinag R, Wang J, Kang P, Wang B, Li Y, Li K, Zhang X. Sonocatalytic performance of Er3+:YAlO3/TiO2–Fe2O3 in organic dye degradation. Chemical Engineering Journal 168 (2011)1041-1048.
10. Jamalluddin NA, Abdullah AZ. Reactive dye degradation by combined Fe(III)/TiO2 catalyst and ultrasonic irradiation: Effect of Fe(III) loading and calcination temperature. Ultrasonics Sonochemistry 18 (2011) 669-678.
11. Anju SG, Jyothi KP, Joseph S, Suguna Y, Yesodharan EP. Ultrasound assisted semiconductor mediated catalytic degradation of organic pollutants in water: Comparative efficacy of ZnO, TiO2 and ZnO-TiO2. Research Journal of Recent Sciences 1 (2012) 191-201.
12. Ahmad M, Ahmed E, Hong ZL, Ahmed W, Elhissi A, Khalid NR. Photocatalytic, sonocatalytic and sonophotocatalytic degradation of Rhodamine B using ZnO/CNTs composites photocatalysts. Ultrasonics Sonochemistry 21 (2014) 761- 773.
13. Sangave PC, Pandit AB, Ultrasound pre-treatment for enhanced biodegradability of the distillery wastewater. Ultrasonics Sonochemistry 11 (2004) 197-203.
14. Sangave PC, Gogate PR, Pandit AB. Ultrasound and ozone assisted biological degradation of thermally pretreated and anaerobically pretreated distillery wastewater. Chemosphere 68 (2007) 42-52.
15. Verma AK, Raghukumar C, Naik CG. A novel hybrid technology for remediation of molasses-based raw effluents. Bioresource Technology 102 (2011) 2411-2418.
16. Wang J, Jiang Z, Zhang L, Kang P, Xie Y, Lv Y, Xu R, Zhang X. Sonocatalytic degradation of some dyestuffs and comparison of catalytic activities of nano sized TiO2, nano sized ZnO and composite TiO2/ZnO powders under ultrasonic irradiation. Ultrasonics Sonochemistry 16 (2009) 225-231.
17. Wang J, Lv Y, Zhang L, Liu B, Jiang R, Han G, Xu R, X. Zhang X. Sonocatalytic degradation of organic dyes and comparison of catalytic activities of CeO2/TiO2, SnO2/TiO2 and ZrO2/ TiO2 composites under ultrasonic irradiation. Ultrasonics Sonochemistry 17 (2010) 642-648.
18. Yılmaz E. Maya endüstrisi atıksuyunun ses ötesi dalgalarla arıtılması, Master Thesis, Hitit University, 2014.
19. Jiang Y, Petrier C, Waite TD. Effect of pH on the ultrasonic degradation of ionic aromatic compounds in aqueous solution. Ultrasonics Sonochemistry 9 (2002) 163-168.
20. Pang YL, Abdullah AZ, Bhatia S. Rewiev on sonochemical methods in the presence of catalyst and chemical additives for treatment of organic pollutants in wastewater. Desalination 277 (2011) 1-14.
21. Merouani S, Hamdaoui O, Saoudi F, Chiha M. Sonochemical degradation of Rhodamine B in aqueous phase: Effects of additives. Chemical Engineering Journal 158 (2010) 550- 557.