Factorial optimization of Coagulation-Flocculation process for Abattoir Wastewater using Carica Papaya seed extract as bio-coagulant
1 World Bank Africa Centre of Excellence in Oilfield Chemicals Research (ACE-CEFOR), University of Port Harcourt, Port Harcourt, Nigeria.
2 Department of Chemical Engineering, University of Port Harcourt, Port Harcourt, Nigeria.
Research Article
Global Journal of Engineering and Technology Advances, 2021, 09(02), 009–016.
Article DOI: 10.30574/gjeta.2021.9.2.0143
Publication history:
Received on 28 September 2021; revised on 01 November 2021; accepted on 03 November 2021
Abstract:
The objective of this research was to optimize the coagulation-flocculation process for abattoir wastewater by utilizing a bio-coagulant derived from Carica Papaya seed (CPS). The bio-coagulant (CPC) was extracted from the Carica Papaya seed using a 2M NaCl solution, and the coagulation-flocculation process was carried out using a bench scale jar test. Applying design expert (13.0.5.0), 23 full factorials with 5 center points, the effects of three factors: coagulant dosage (X1), pH of the wastewater (X2), and temperature (X3) on turbidity reduction efficiency were examined. Applying ANOVA, it was discovered that a linear model best characterizes the process, with a significant p-value of 0.0015, showing that the model is significant. Additionally, the temperature is a significant component in the model, with a p-value of 0.02 indicating that the temperature is statistically significant. A turbidity reduction efficiency of 90.02 % was attained at the optimum conditions of 0.75g/L of CPC, pH of 6, and temperature of 308 K.
Keywords:
Optimization; Abattoir; Coagulation; Factorial; Carica Papaya
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