The Role of Inorganic Metal Salts in Wastewater Clarification

Authors

  • Lugard Ukiwe Federal University of Technology, Owerri
  • I.C. Iwu Federal University of Technology, Owerri
  • Chijioke Okere M Federal University of Technology, Owerri

DOI:

https://doi.org/10.24297/jac.v4i1.961

Keywords:

Coloration, concentration, environment, ferric sulphate, redox reaction, solution, turbidity

Abstract

An investigation into the ability of four inorganic coagulants namely; alum (Al2(SO4)3.18H2O), ammonium aluminum sulphate (NH4Al(SO4)2.12H2O), ferrous sulphate (FeSO4) and ammonium ferrous sulphate (NH4)2Fe(SO4)2.6H2O) in clarifying wastewater was examined. Results obtained from conventional standard ‘jar-test’ experiments indicated that alum was the most effective coagulant since it reduced turbidity of the wastewater to 0.64 NTU at a contact time of 300 min. Ferrous sulphate was the least effective coagulant, reducing turbidity of the wastewater to 3.45 NTU only at 240 min contact time, but when the contact time of the experiment was increased from 240 to 300 min, re-coloration of the solution was observed indicating re-stabilization of suspended particles. These findings tend to support the claim that alum is a choice coagulant for wastewater clarification.   

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Author Biographies

Lugard Ukiwe, Federal University of Technology, Owerri

Department of Chemistry

I.C. Iwu, Federal University of Technology, Owerri

Department of Chemistry

Chijioke Okere M, Federal University of Technology, Owerri

Department of Chemistry

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Published

2008-04-19

How to Cite

Ukiwe, L., Iwu, I., & Okere M, C. (2008). The Role of Inorganic Metal Salts in Wastewater Clarification. JOURNAL OF ADVANCES IN CHEMISTRY, 4(1), 318–322. https://doi.org/10.24297/jac.v4i1.961

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Articles