Use of non-Conventional Material to Remove Cu+2 ions from Aqueous Solutions using Chemical Coagulation

  • Muna Yousif Abdul. Ahad, Ass. Prof. Dr. College of Engineering-University of Baghdad
  • Samer Jalil Ibrahim College of Engineering-University of Baghdad
Keywords: heavy metal; coagulant; jar test; flocculation.

Abstract

Coagulation - flocculation are basic chemical engineering method in the treatment of metal-bearing industrial wastewater because it removes colloidal particles, some soluble compounds and very fine solid suspensions initially present in the wastewater by destabilization and formation of flocs. This research was conducted to study the feasibility of using natural coagulant such as okra and mallow and chemical coagulant such as alum for removing Cu and increase the removal efficiency and reduce the turbidity of treated water. Fourier transform Infrared (FTIR) was carried out for okra and mallow before and after coagulant to determine their type of functional groups. Carbonyl and hydroxyl functional groups on the surface of okra and mallow were the major groups responsible for coagulation process. By using alum (conventional coagulants), okra and mallow (as a primary coagulant or in combination with the other two primary coagulants) and by the jar testing, the optimum pH-value and dose of the coagulants were determined. The results indicated that the optimal pH values were 6.7, 8 and 6 for alum, okra and mallow, respectively. Mathematical modeling show significant results (sig.<0.05) for the % Cu  removal (dependent variable) with respect to coagulant dose (independent variable) for the okra as a primary coagulant, alum with okra and alum with mallow as binary coagulants and  alum, okra  and mallow as ternary coagulants .

 

 

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Published
2015-05-01
How to Cite
Abdul. Ahad, M. and Ibrahim, S. (2015) “Use of non-Conventional Material to Remove Cu+2 ions from Aqueous Solutions using Chemical Coagulation”, Journal of Engineering, 21(5), pp. 20-34. Available at: http://joe.uobaghdad.edu.iq/index.php/main/article/view/431 (Accessed: 6April2020).