Application of fish bone Chitosan-Protein Bio-coagulant for abattoir wastewater treatment: Comparative process optimization and evaluation
Large amount of abattoir wastewater is generated across many municipal abattoir centres in developing countries. Emphasis on the reduction of the impact of wastewater on the environment is essential for environmental sustainability. Bio-coagulation has received serious attention recently in wastewat...
Saved in:
| Published in: | Waste Management Bulletin Vol. 1; no. 1; pp. 49 - 59 |
|---|---|
| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier
01-06-2023
|
| Subjects: | |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Large amount of abattoir wastewater is generated across many municipal abattoir centres in developing countries. Emphasis on the reduction of the impact of wastewater on the environment is essential for environmental sustainability. Bio-coagulation has received serious attention recently in wastewater treatment, enhanced protein-based bio-coagulant, extracted from fishbone was considered in this study as a possible bio-coagulant in abattoir wastewater treatment. Process variable such as adsorbent dosage, pH, temperature and time of settling of the bio-coagulant were monitored using the jar-test procedure, while turbidity, BOD, COD and colour removal from the abattoir wastewater sample was used to assess the effectiveness of the bio-coagulant. Response Surface Methodology (RSM) and Artificial Neural Network (ANN) were applied to assess the optimization of the process variables, statistical indices, which include Root Mean Square Error (RMSE), Chi Square (χ2), Model Predictive Error (MPE) and Absolute Average Deviation (AAD), were employed and used for comparative analysis of both models. The result of the study from ANOVA table of RSM indicates that all the linear terms of the model for BOD, COD, turbidity and colour were significant at 5% P-value level. The ANN overall correlation coefficients for the validated model used in predicting the effluent parameters are 0.97348 (BOD), 0.90725 (COD), 0.94711 (turbidity) and 0.99072 (colour). However, on comparative analysis of both models, it could be deduced that RSM accurately predicted the variability in the entire system more than ANN based on the error analysis. Optimum pH of 2 was determined for BOD, turbidity and colour removal, while the optimum pH of 4 was recorded for COD. Settling time of 25 mins to 35 mins, the dosage of 2 to 3 g, and a temperature of 313 to 333 K was assessed to be the best conditions for pollutant removal. It is recommended that fishbone chitosan-protein would be appropriate bio-coagulant in abattoir wastewater treatment.Cite: Okey-Onyesolu, C. F., Chukwuma, E. C., Okoye, C. C., Umobi, C. O. (2022). Application of Fish bone Chitosan-Protein Bio-coagulant for Abattoir Wastewater Treatment: Comparative Process Optimization and Evaluation. |
|---|---|
| ISSN: | 2949-7507 2949-7507 |
| DOI: | 10.1016/j.wmb.2023.03.003 |