OPTIMIZING FUNCTIONS OF COAGULANTS IN TREATMENT OF WASTEWATER FROM METALWORKING FLUIDS: PREDICTION BY RSM METHOD

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JAMALI HAMZEH ALI; MORADNIA MARYAM

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Environmental Health Engineering and Management Journal Year:2018 | Volume:5 | Issue:1 Page(s): 15-21

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Title

OPTIMIZING FUNCTIONS OF COAGULANTS IN TREATMENT OF WASTEWATER FROM METALWORKING FLUIDS: PREDICTION BY RSM METHOD

Author(s)

JAMALI HAMZEH ALI | MORADNIA MARYAM | Issue Writer Certificate

Keywords

WASTEWATER TREATMENT

METALWORKING FLUIDS

RESPONSE SURFACE METHODOLOGY

OPTIMIZATION

Abstract

Background: Coagulation is a treatment procedure for METALWORKING FLUIDS (MWFs). This study aimed to optimize coagulation using four coagulants and compare the results. Methods: In this research, the outputs of a coagulation procedure in chemical oxygen demand (COD) removal, turbidity, and the release of oil were investigated using four coagulants, ferric chloride (FeCl3), ferric sulfate (Fe2(SO4)3, calcium chloride (CaCl2), and aluminum sulfate (Al2(SO4)3. To optimize the process, a central composite design (CCD) and RESPONSE SURFACE METHODOLOGY (RSM) were used. Results: Under optimal conditions for using calcium chloride (coagulant concentration 4. 2 g/L and pH 3. 71), COD and turbidity removals and oil released were respectively 93%, 96. 9%, and 31. 8 mL. COD and turbidity removals and oil released using aluminum sulfate as a coagulant under optimal conditions (5. 36 g/L, pH 4. 64) were 75. 7%, 89. 9%, and 28. 9 mL, respectively. With respect to ferric sulfate under optimal conditions (6. 25 g/L, pH 3. 4), COD and turbidity removals were 60% and 84. 1%, respectively and oil released was 16. 1 ml. COD and turbidity removals and the greatest amount of oil released by ferric chloride under optimal conditions (3. 16 g/L, pH 3. 5) were 54. 4%, 84. 7%, and 15. 9 ml, respectively. Conclusion: Compared with other coagulants in the treatment of MWFs, calcium chloride achieved the highest removal efficiency in eliminating pollution indicators.

Cites

Investigation of Microbial Contamination in Surfaces and Waterlines of Dental Units in Terms of Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Coliforms

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APA: Copy

JAMALI, HAMZEH ALI, & MORADNIA, MARYAM. (2018). OPTIMIZING FUNCTIONS OF COAGULANTS IN TREATMENT OF WASTEWATER FROM METALWORKING FLUIDS: PREDICTION BY RSM METHOD. ENVIRONMENTAL HEALTH ENGINEERING AND MANAGMENT JOURNAL, 5(1), 15-21. SID. https://sid.ir/paper/348910/en

Vancouver: Copy

JAMALI HAMZEH ALI, MORADNIA MARYAM. OPTIMIZING FUNCTIONS OF COAGULANTS IN TREATMENT OF WASTEWATER FROM METALWORKING FLUIDS: PREDICTION BY RSM METHOD. ENVIRONMENTAL HEALTH ENGINEERING AND MANAGMENT JOURNAL[Internet]. 2018;5(1):15-21. Available from: https://sid.ir/paper/348910/en

IEEE: Copy

HAMZEH ALI JAMALI, and MARYAM MORADNIA, “OPTIMIZING FUNCTIONS OF COAGULANTS IN TREATMENT OF WASTEWATER FROM METALWORKING FLUIDS: PREDICTION BY RSM METHOD,” ENVIRONMENTAL HEALTH ENGINEERING AND MANAGMENT JOURNAL, vol. 5, no. 1, pp. 15–21, 2018, [Online]. Available: https://sid.ir/paper/348910/en

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