Polymer Induced Flocculation for Treatment of a Tile Factory Wastewater using Polyacrylamide (PAM): Optimization by Response Surface Methodological Analysis

Document Type : Research Paper


1 Water and Wastewater Research Center, Applied Chemistry Department, Faculty of Chemistry, Razi University, Kermanshah, Iran

2 Department of Environmental Health Engineering, School of Public Health, Kermanshah University of Medical Sciences, Kermanshah, Iran

3 Department of Environmental Health Engineering, Ardabil University, Ardabil, Iran

4 BSc in Health Environmental health centers of Ardabil city, Ardabil University of Medical Sciences, Ardabil, Iran


Flocculation is an important industrial process for solid-liquid separation during the primary purification of wastewater. Effects of the solution pH and flocculants dosage to examine the performance of five commercially available cationic & anionic polyacrylamides (Chemfloc 3876, Chemfloc 1510C, Chemfloc 530A, AN913 and AN913 SH), with different molecular weights and different charge densities to treating the tile factories wastewater were investigated. To minimize turbidity and total suspended solids (TSS), the experiments were carried out using jar tests, and response surface methodology (RSM) was applied to optimize this process. The optimal conditions for flocculent dosage and pH were determined 20 mg/l and 3-5.25, respectively, where 99.6% of TSS removal and final turbidity of 18 NTU could be obtained for Chemfloc 1510C. This paper shows that higher molecular weight polymers improved initial aggregation but the effect of cationic charge was more important for a stable flocculation. The results suggest that single-polymer system can be used alone in the coagulation-flocculation process due to the efficiency of the polyacrylamide.


Ahmad AL, Wong SS, Teng TT, Zuhairi A, 2007. Optimization of coagulation–flocculation process for pulp and paper mill effluent by response surface methodological analysis. Journal of Hazardous Materials. 145: 162–168.
Amudaa OS, Amoo IA, 2007. Coagulation/flocculation process and sludge conditioning in beverage industrial wastewater treatment. Journal of Hazardous Materials.  141:778–78.
Barany S, Szepesszenentgyorgyi A, 2004. Flocculation of cellular suspensions by polyelectrolytes. Adv. Colloid Interface.111: 117–129.
Chong MF, Lee KP, Chieng LHJ, Ramli IISB, 2009. Removal of boron from ceramic industry wastewater by (POMB) bottom ash and polymer, water research.43: 3326-3334.
Duan J, Gregory J, 2003. Coagulation by hydrolyzing metal salts. Advances in Colloid and Interface Science. 100 –102: 475–502.
Ersoy B, 2005. Effect of pH and polymer charge density on settling rate and turbidity of natural stone suspensions. Int. J. Miner. Process. 75:207– 216.
Gregory J, 1989. Fundamental of flocculation. Crit. Rev. Environ. Control. 19:185–230.
Kushwaha JP, Sirvastava VC, Mall ID, 2010. Treatment of dairy wastewater by inorganic coagulants: Parametric and disposal studies. Water research. 44: 5867-5874.
Lee BB, Choo KH, Chang D, Choi SJ, 2009. Optimizing the coagulant dose to control membrane fouling in combined coagulation/ultrafiltration systems for textile wastewater reclamation. Chemical Engineering Journal.  155:101–107.
 Merzouk B, Gourich B, Madani K, Vial CH, Sekki A, 2011. Removal of a disperse red dye from synthetic wastewater by chemical coagulation and continuous electrocoagulation: A comparative study. Desalination. 272: 246–253.
Pavanelli D, Bigi A, 2005. Indirect methods to estimate suspended sediment concentration: reliability and relationship of turbidity and settle able solids. Biosyst. Eng. 90: 75–83.
 Pavanelli D, Bigi A, 2005. Indirect methods to estimate suspended sediment concentration: reliability and relationship of turbidity and settle able solids. Biosyst. Eng.  90: 75–83.
Solak M, Kilic M, Yazıcı H, Sencan A, 2009. Removal of suspended solids and turbidity from marble processing wastewaters by electrocoagulation: Comparison of electrode materials and electrode connection systems. Hazardous Materials.  172: 345–352.
Song Z, Williams CJ, Edyvean RGJ, 2004. Treatment of tannery wastewater by chemical coagulation. Desalination.164: 249-259.
Ugurlu M, Gurses A, Dogar C, Yalcın M, 2008. The removal of lignin and phenol from paper mill effluents by electrocoagulation. Journal of Environmental Management.  87: 420–428.
Wang JP, Chen YZ, Ge XW, Yu HQ, 2007. Optimization of coagulation–flocculation process for a paper-recycling wastewater treatment using response surface methodology. Colloids and Surfaces. 302: 204–210.
Wong SS, Teng TT, Ahmad AL, Zuhairi A, Najafpour G, 2006. Treatment of pulp and paper mill wastewater by polyacrylamide (PAM) in polymer induced flocculation. Journal of Hazardous Materials.135: 378–388.
Yan Y, Glover S, Jameson G, Biggs S, 2004. The flocculation efficiency of polydisperse polymer flocculants. Int. J. Miner. Process. 73: 161–175.
Zhao YX, Gaoa BY, Shonb HK, Cao BC, Kim JH, 2011. Coagulation characteristics of titanium (Ti) salt coagulant compared with aluminum (Al) and iron (Fe) salts. Journal of Hazardous Materials. 185: 1536–1542.
Amir Yaghoubi Nezhad, S. H., Atefeh Mehrabi Far, Masoumeh Piryaei, Seyed Mojtaba Mostafavi. (2019). Investigation of Shigella Lipopolysaccharides Effects on Immunity Stimulation of Host Cells. International Transaction Journal of Engineering, Management, Applied Sciences and Technologies, 10, 465.
Ceisil, U. (2018). E-Awareness of University Student through Smart Phones and Developing Social Networks. Journal of Humanities Insights, 02(03), 139-145. doi:10.22034/JHI.2018.70850
Heidari, S., Imani, M., & Mostafavi, S. M. (2017). A Validated and Rapid HPLC Method for Quantification of Human Serum Albumin in Interferon beta-1a Biopharmaceutical Formulation. MedBioTech Journal, 1(01), 29.
Heidary, S., & Riahi, A. (2018). Study of α-1 Antitrypsin Serum and its Effects on Chronic Inflammation in Diabete Patients. MedBioTech Journal, 02(01), 01-07. doi:10.22034/MBT.2018.60861
Jamal, M., & Oglu, A. (2018). Review of The Basis for Oncolytic Virotherapy and Development of the Genetically Modified Tumor-Specific Viruses. MedBioTech Journal, 02(03), 95-102. doi:10.22034/MBT.2018.76932
Jinadu, O., Oluwafemi, S., Soyinka, M., & Akanfe, K. (2017). Effects of International Financial Reporting Standards (IFRS) on Financial Statements Comparability of Companies. Journal of Humanities Insights, 01(01), 12-16. doi:10.22034/JHI.2017.59551
Mehrabifar, A., & Rahmati, M. (2017). Investigation of Anticancer Effects of Dacarbazine Hydrogel in the Injectable Form and its Release. MedBioTech Journal, 01(01), 15-21. doi:10.22034/MBT.2017.60333
Mehrabifar, A., & Rahmati, M. (2017). Significant Increasing of Gastrointestinal Dissolution of Aceclofenac via Florite. MedBioTech Journal, 01(01), 9-14. doi:10.22034/MBT.2017.60328
Mostafavi, S. M., Bagherzadeh, K., & Amanlou, M. (2017). A new attempt to introduce efficient inhibitors for Caspas-9 according to structure-based Pharmacophore Screening strategy and Molecular Dynamics Simulations. MedBioTech Journal, 01(01), 1-8. doi:10.22034/mbt.2017.60325
Seyed Mojtaba Mostafavi1, H. M., & Taskhiri, M. S. (2019). In Silico Prediction of Gas Chromatographic Retention Time of Some Organic Compounds on the Modified Carbon Nanotube Capillary Column. Journal of Computational and Theoretical Nanoscience, 16(151), 156.
Seyed Mojtaba Mostafavi, A. R., Mina Adibi, Farshid Pashaee, Masoumeh Piryaei. (2011). Modification of Glassy Carbon Electrode by a Simple, Inexpensive and Fast Method Using an Ionic Liquid Based on Immidazolium as Working Electrode in Electrochemical Determination of Some Biological Compounds. Asian Journal of Chemistry, 23(12).
Z. Man, A. G. E., S. M. Mostafavi,, & Surendar, A. (2019). Fuel oil characteristics and applications: economic and technological aspects. Petroleum Science and Technology.