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.
Highlights
Wastewater is produced by a combination of domestic, agricultural, commercial and industrial operations, as well as surface runoff or storm water, as well as sewer intake or infiltration, among other things [1]
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
Summary
Wastewater is produced by a combination of domestic, agricultural, commercial and industrial operations, as well as surface runoff or storm water, as well as sewer intake or infiltration, among other things [1]. The abattoir industry is one of the industrial processes that consumes a significant amount of water in the course of its operations and, as a result, generates a significant amount of wastewater. With significant levels of suspended particles, liquid, and fats, are the most significant contaminants in abattoir (slaughter house) effluent [2]. These wastewaters are not treated and are instead been thrown into the environment and nearby aquatic bodies [3]. The effects of untreated abattoir wastewater discharged into Nigerian water bodies has developed into a substantial cause of environmental concern in recent years [4]. According to the Clean Water Act of 1972, there are rules for wastewater that is deposited into any navigable water body [5]
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