Sustainable Phosphate Recovery as Hydroxyapatite from the Secondary Treated Industrial b-Effluents: Statistical RSM Approach.
In: Journal of Hazardous, Toxic & Radioactive Waste, Jg. 28 (2024-04-01), Heft 2, S. 1-10
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Zugriff:
The present study focuses on recovery and removal of phosphate in the form of hydroxyapatite (HAP) from a phosphate-rich secondary-treated effluents. Synthesis of HAP has been done at different operating parameters and statistical analysis was carried out using response surface methodology (RSM). Initial PO43−−P concentration (mg/L), pH, and stirring speed (rpm) have been used as the input parameters for the RSM process. Optimization and interaction between the factors (initial PO43−−P concentration, pH, and rpm) were performed using the Box-Behnken design (BBD) of RSM. The model obtained from the RSM-based BBD statistical study has given pH: 12, PO43−−P initial concentration: 400 mg/L, and rpm: 100 as optimized parameters for the synthesis of HAP. Maximum removal of 79% phosphate removal/recovery was achieved (as HAP) in this study for the experimental runtime of 3.5 h. The effect of pH, PO43−−P initial concentration and stirring speed on HAP formation/phosphate removal were also briefly discussed. ANOVA and the fit statistics generated for the model has identified that the model is significant. The validation study conducted using both synthetically prepared and secondary-treated effluent revealed their reasonable agreement with the predicted results (less error). Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) characterization was performed for the HAP produced in this to discover the morphology and elemental composition. [ABSTRACT FROM AUTHOR]
Titel: |
Sustainable Phosphate Recovery as Hydroxyapatite from the Secondary Treated Industrial b-Effluents: Statistical RSM Approach.
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Autor/in / Beteiligte Person: | Mallikarjuna, Challa ; Dash, Rajesh Roshan ; Ramesh, Sreekrishnaperumal Thanga |
Zeitschrift: | Journal of Hazardous, Toxic & Radioactive Waste, Jg. 28 (2024-04-01), Heft 2, S. 1-10 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 2153-5493 (print) |
DOI: | 10.1061/JHTRBP.HZENG-1287 |
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