Ceramic industry wastewater treatment by chemical coagulation process: a statistical optimization of operating parameters

This study deals with chemical oxygen demand (COD) removal from ceramic industry wastewater by chemical coagulation using alum and ferric chloride (FeCl3) as coagulants. The study also focuses on the capillary suction time (CST) of sludge samples which is an important sludge dewatering parameter. Response surface methodology (RSM) approach was employed to evaluate the effects and interactions of the operating variables and to optimize the performance of the process. Significant quadratic polynomial models were obtained (R2 = 96.26% for alum and R2=89.15% for FeCl3 for COD removal; R2=96.6% for alum and R2=90.9% for FeCl3 for CST of sludge, respectively). Alum was found more effective coagulant for ceramic industry wastewater treatment as compared with FeCl3. Numerical optimization based on desirability function was employed; in a 36 min trial 95.2% of COD removal was achieved at alum dosage of 3.3 g/L and pH 5. The optimization study shows that the minimum CST of sludge was found 17.4 s at alum dosage of 5 g/L and pH 5 in a reaction time of 16 min. The results indicate that the RSM is suitable for the design and optimization of chemical coagulation process using alum as a coagulant for the treatment of ceramic industry wastewater.

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S. H. Elias, M. Mohamed, A.Nor-Anuar, K. Muda, M.A.H.M. Hassan, M. Nor Othman, and S. Chelliapan, “Ceramic industry wastewater treatment by rhizofiltration system – application of water hyacinth bioremediation,” IIOABIndia Journal, vol. 5, no. 1, pp. 6-14, 2014.

A.R. Dinçer and F. Kargı, “Characterization and biological treatment of ceramic industry wastewater,” Bioprocess Enginerring, vol. 23, pp. 209-212, 2000.

M.C. Barros, P. Bello, E. Roca, J.J. Casares, “Integrated pollution prevention and control for heavy ceramic industry in Galicia (NW Spain),” Journal of Hazardous Materials, vol. 141, pp. 680–692, 2007.

European Commission, Reference Document on Best Available Techniques in the Ceramic Manufacturing Industry, August 2007.

E.I. Arslan, S. Aslan And M. Topal, “Karo endüstrisi atıksularının fizikokimyasal arıtılabilirliği,” Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, vol. 26, no. 1, pp. 50-56, 2010.

E.O. Dingilian, T.S. Yau and S.T. , Yau, “Leading Ceramic Tile Factory Overcomes Water Shortages by Treating and Recyling Process Wasterwater Using Chitosan,” 2002, http://www.uchitotech.com/White_Papers/cera mi c_tile.htm, (Accessed 10 May 2009).

IFC. International Finance Corporation, World Bank Group, Environmental, Health, and Safety Guidelines for Ceramic Tile and Sanitary Ware Manufacturing, http://www.ifc.org/ifcext/enviro.nsf/Attachmen ts ByTitle/gui_EHSGuidelines2007_CeramicTile /$F ILE/Final++Ceramic+Tile+and+Sanitary+War e.p Df, 2007, (Accessed 10 February 2017).

B. Kotaiah, I.V.R. Reddy and S.S. Reddy, “Ceramic Tile Industrial Waste Treatment Plant-Residue Usage in the Production Process”, Industrial Pollution and Management, APH Publishing Corporation, India, pp. 184- 186, 2004.

M.F. Chong, K.P. Lee, H.J. Chieng and I.I.S.B. Ramli, “Removal of boron from ceramic industry wastewater by adsorption– flocculation mechanism using palm oil mill boiler (POMB) bottom ash and polymer,” Water Research, vol. 43, no.13, pp. 3326-3334, 2009.

Water Pollution and Control Regulation, 2004. Ministry of Env andUrbanization. MoEU, Turkey, http://www.mevzuat.gov.tr/Metin.Aspx?Mevz uatKod=7.5.7221&sourceXmlSearch=&Mevz uatIliski=0, (Accessed 29 January 2018).

B.K. Körbahti, “Response surface optimization ofelectrochemical treatment of textile dye wastewater,” Journal of Hazardous Materials, vol. 145, pp. 277–286, 2007.

S. Dogan, A. Aygun, M.E. Argun, E. Esmeray, “Optimization of struvite precipitation for landfill leachate treatment,” Uludağ University Journal of The Faculty of Engineering, vol. 23, pp. 65-76, 2018.

A. Aygun, S. Dogan, M.E. Argun, H. Ates, “Removal of sulphate from landfill leachate by crystallization,” Environmental Engineering Research, https://doi.org/10.4491/eer.2017.179, 2019.

S.C. Kim, “Application of response surface method as anexperimental design to optimize coagulation-flocculationprocess for pre-treating paper wastewater,” Journal of Industrial and Engineering Chemistry, vol. 38, pp. 93–102, 2016.

N. Bakaraki Turan, H. Sari Erkan and G. Onkal Engin, “The investigation of shale gas wastewatertreatment by electro-Fenton process: Statistical optimization of operational parameters,” Process Safety and Environmental Protection, vol. 109, pp. 203–213, 2017.

B.K. Körbahti and M.A. Rauf, “Response surface methodology (RSM) analysis of photo induced decoloration of toludine blue,” Chemical Engineering Journal, vol. 136, pp. 25–30, 2008.

I. Arslan-Alaton, G. Tureli and T. Olmez- Hanci, “Treatment ofazo dye production wastewaters using Photo-Fenton-like advanced oxidation processes: optimization by response surface methodology,” Journal of Photochemistry and Photobiology A: Chemistry, vol. 202, pp. 142–153, 2009.

P. A. Vesilind, “Capillary suction time as a fundamental measure of sludge dewaterability,” Journal Water Pollution Control Federation, vol. 60, no. 2, pp. 215-220, 1988.

G.W.Chen, W.W.Lin and D.J.Lee, “Capillary suction time (CST) as a measure of sludge dewaterability,” Water Science and Technology, vol. 34, no. 3-4, pp. 443-448, 1996.

A.R. Amani-Ghadima, 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,” Chemical Engineering and Processing, vol. 64, pp. 68-78, 2013.

R. Sridhar, V. Sivakumar and K. Thirugnanasambandham, “Response surface modeling and optimization of upflow anaerobic sludge blanket reactor process parameters for the treatment of bagasse based pulp and paper industry wastewater,” Desalination and Water Treatment, vol. 57, pp. 4345–4356, 2016.