Development and Application of a Bio-Coagulant using Plantain Pseudo Stem Extract for Crude Oil-Field Produced Water Treatment

Authors: Odisu, T. And Basikoro, A.

DOI Info: http://doi.org/10.5281/zenodo.12599674

ABSTRACT

One factor contributing to the high cost of crude oil production in Nigeria is produce water handling. This is because of regulatory requirements for produced water disposal. Application of imported water clarifier chemicals have become a prominent approach in water treatment, leading to huge capital flight and poor local capacity development. Therefore, this work investigates the optimization of coagulation efficacy of Musa paradisiaca (plantain) pseudo stem juice as natural coagulant, a substitute for aluminium Sulphate (Alum). The water sample from a flow station was obtained for the evaluation of the efficacy of the coagulants. Response Surface Methodology was used to optimize the process using Design Expert Version 10. Factors considered were; coagulant dosage (mg/L), retention time (min), and pH with seventeen experimental runs generated using Box-Behnken Design method. The parameters analyzed were EC, TSS, TDS and Turbidity. Jar test laboratory scale studies were performed, and the result analyzed statistically to study the effects of the factors on coagulation. The coagulation efficacy was achieved at pH 6 with percentage removal of 77%, dosage of 7.5mg/L after 60 minutes and 97% performance as a coagulant aid with Alum. The raw water sample was characterized by conducting preliminary test to ascertain the initial concentration of the parameters. Analysis of variance (ANOVA) was used to evaluate the significance of the model and the variables. Plantain pseudo stem juice showed tremendous potential as a bio-coagulant for water treatment and could be applied in the pre-treatment stage.

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