Elektrokoagülasyon Yöntemi ile Sulardan Boyarmadde Gideriminde Molekül Büyüklüğü ve pH etkisi

Elektrokoagülasyon koloitlerin atıksulardan giderilmesinde kullanılan önemli arıtma yöntemlerinden biridir. Boyarmaddeler atıksulardaki önemli koloit kaynaklarının başında gelirler. Tekstil endüstrisinde oldukça fazla kullanılan boyarmaddeler, endüstrinin kullandığı su miktarının fazlalığı da göz önüne alındığında alıcı su ortamları için önemli kolloidal kirleticiler haline gelirler. Bu çalışmada farklı molekül ağırlığındaki iki ayrı tekstil boyar maddesi kullanılarak kirletici koloitlerin molekül ağırlığının elektrokoagülasyonda giderme verimine ne şekilde etki ettiği incelendi. Bu amaçla alüminyum elektrotların kullanıldığı reaktöründe renk giderme çalışmaları yapıldı. Çalışma farklı pH değerlerinde yapılarak farklı flok yapılarının (büyüklüklerinin) etkileri de incelendi. pH artışından daha büyük molekül ağırlığına sahip olan boyarmadde daha çok etkilendiği tespit edildi. Boyarmadde gidermede daha büyük molekül ağırlığına sahip olan Reactive Black 39 (1021.16 g/mol) pH değişiminden % 100 'den 74.83 'e düşüşle, yaklaşık % 25 oranında etkilenirken, daha küçük molekül ağırlığına sahip olan Remazol Red 3B (674.10 g/mol) % 96.54 'den 83.01 'e düşüşle yaklaşık % 13 oranında etkilenmektedir.

Molecular Weight and pH Effect on Removal of Dyestuffs from Water by Electrocoagulation Method

Electrocoagulation is one of the important treatment methods used to remove colloids from wastewater. Dyestuffs are the leading source of colloids in wastewaters. Dyestuffs, which are used extensively in the textile industry, become important colloidal pollutants for the receiving water environments, given the increased amount of water used by the industry. In this study, the effect of molecular weight of pollutant colloids on the removal efficiency of electrocoagulation was investigated by using two different textile dye materials with different molecular weights. For this purpose, color removal studies were carried out in the reactor where aluminium electrodes were used. The study was carried out at different pH values and the effects of different flock structures (size) were also studied. It was found that the pH a was more affected than the dye having a larger molecular weight. The Reactive Black 39 (1021.16 g / mol), which has a higher molecular weight in the dyestuffs, has Remazol Red 3B (674.10 g / mol), which has a smaller molecular weight, while being affected by a change of pH from 75% to 74.83% It is affected by 13%, down from 96.54 to 83.01.

PDF

___

[1] M. Sleiman, D. Vildozo, C. Ferronato, and J.-M. Chovelon, "Photocatalytic degradation of azo dye Metanil Yellow: Optimization and kinetic modeling using a chemometric approach," Appl. Catal. B Environ., vol. 77, no. 1, pp. 1-11, 2007.
[2] V. Shah and D. Madamwar, "Community genomics: Isolation, characterization and expression of gene coding for azoreductase," Int. Biodeterior. Biodegradation, vol. 79, pp. 1-8, 2013.
[3] C. Ahmed Basha, N. S. Bhadrinarayana, N. Anantharaman, and K. M. Meera Sheriffa Begum, "Heavy metal removal from copper smelting effluent using electrochemical cylindrical flow reactor," J. Hazard. Mater., vol. 152, no. 1, pp. 71-78, 2008.
[4] O. T. Can, M. Kobya, E. Demirbas, and M. Bayramoglu, "Treatment of the textile wastewater by combined electrocoagulation," Chemosphere, vol. 62, no. 2, 2006.
[5] N. Mohan, N. Balasubramanian, and C. A. Basha, "Electrochemical oxidation of textile wastewater and its reuse," J. Hazard. Mater., vol. 147, no. 1, pp. 644-651, 2007.
[6] M. M. and L. L. P.Balaji, B.Vignesh, M.Sowmiya, "Removal of Colour from Textile Effluent using Natural Adsorbent (Calotropis Gingantea)," Int. J. Innov. Eng. Technol., vol. 5, no. 4, p. 265, 2015.
[7] S. Aoudj, A. Khelifa, N. Drouiche, M. Hecini, and H. Hamitouche, "Electrocoagulation process applied to wastewater containing dyes from textile industry," Chem. Eng. Process. Process Intensif., vol. 49, no. 11, pp. 1176-1182, 2010.
[8] M. Bayramoglu, M. Kobya, O. T. Can, and M. Sozbir, "Operating cost analysis of electroagulation of textile dye wastewater," Sep. Purif. Technol., vol. 37, no. 2, 2004.
[9] O. T. Can, M. Bayramoglu, and M. Kobya, "Decolorization of reactive dye solutions by electrocoagulation using aluminum electrodes," Ind. Eng. Chem. Res., vol. 42, no. 14, 2003.
[10] M. Kobya, E. Demirbas, O. T. Can, and M. Bayramoglu, "Treatment of levafix orange textile dye solution by electrocoagulation," J. Hazard. Mater., vol. 132, no. 2-3, 2006.
[11] T. K. Dawood, Sara. Sen, "Review on Dye Removal from Its Aqueous Solution into Alternative Cost Effective and Non-Conventional Adsorbents," J Chem Proc Engg, vol. 1, no. 1, pp. 1-11, 2014.
[12] E. Pajootan, M. Arami, and N. M. Mahmoodi, "Binary system dye removal by electrocoagulation from synthetic and real colored wastewaters," J. Taiwan Inst. Chem. Eng., vol. 43, no. 2, pp. 282-290, 2012.
[13] N. Ardhan, T. Ruttithiwapanich, W. Songkasiri, and C. Phalakornkule, "Comparison of performance of continuous-flow and batch electrocoagulators: A case study for eliminating reactive blue 21 using iron electrodes," Sep. Purif. Technol., vol. 146, no. Supplement C, pp. 75-84, 2015.
[14] B. K. Nandi and S. Patel, "Effects of operational parameters on the removal of brilliant green dye from aqueous solutions by electrocoagulation," Arab. J. Chem., vol. 10, no. Supplement 2, pp. S2961-S2968, 2017.
[15] M. K. Mbacké et al., "Electrocoagulation process applied on pollutants treatmentexperimental optimization and fundamental investigation of the crystal violet dye removal," J. Environ. Chem. Eng., vol. 4, no. 4, Part A, pp. 4001- 4011, 2016.
[16] S. Zodi, B. Merzouk, O. Potier, F. Lapicque, and J.-P. Leclerc, "Direct red 81 dye removal by a continuous flow electrocoagulation/flotation reactor," Sep. Purif. Technol., vol. 108, no. Supplement C, pp. 215-222, 2013.
[17] A. R. Amani-Ghadim, S. Aber, A. Olad, and H. Ashassi-Sorkhabi, "Optimization of electrocoagulation process for removal of an azo dye using response surface methodology and investigation on the occurrence of destructive side reactions," Chem. Eng. Process. Process Intensif., vol. 64, no. Supplement C, pp. 68-78, 2013.
[18] A. Akyol, O. T. Can, and M. Bayramoglu, "Treatment of hydroquinone by photochemical oxidation and electrocoagulation combined process," J. Water Process Eng., vol. 8, 2015.
[19] T. Picard, G. Cathalifaud-Feuillade, M. Mazet, and C. Vandensteendam, "Cathodic dissolution in the electrocoagulation process using aluminium electrodes," J. Environ. Monit., vol. 2, no. 1, pp. 77-80, 2000.
[20] J. Prakash Kushwaha, V. Chandra Srivastava, and I. Deo Mall, "Studies on electrochemical treatment of dairy wastewater using aluminum electrode," AIChE J., vol. 57, no. 9, pp. 2589-2598, 2011.
[21] A. Gürses, M. Yalçin, and C. Doğar, "Electrocoagulation of some reactive dyes: a statistical investigation of some electrochemical variables," Waste Manag., vol. 22, no. 5, pp. 491- 499, 2002.