Total phosphorus and reactive phosphate removal from aquaculture wastewater using calcined eggshell

Authors

Sin Ying Tan¹ , Sumathi Sethupathi¹ , Kah Hon Leong¹ , Tanveer Ahmad¹

1. Faculty of Engineering & Green Technology, Universiti Tunku Abdul Rahman, Kampar, Malaysia

Conference / event

4th International Symposium on Green and Sustainable Technology (ISGST 2021), October 2021 (Virtual)

Poster summary

Phosphorus is the key nutrient in fish feed, and it has been one of the major soluble nutrients found in aquaculture wastewater (AW). This work aims to evaluate the removal of Total Phosphorus (TP) and Reactive Phosphate (PO43-) via adsorption in batch studies using thermally calcined eggshells as adsorbent. The effect of calcination temperature (700 – 1000°C), particle size, and holding time were investigated. Characterization of adsorbents revealed that crystalline structure and functional groups were responsible for the TP and PO43- removal using calcined eggshell from AW. Adsorption equilibrium was attained after 15 min with the dosage of 0.2 g of the optimized adsorbent, capable of removing more than 97 % of TP and PO43- from AW. This finding has proven the ability of calcined eggshell waste as a potential phosphorus adsorbent from liquid effluents.

Keywords

Total phosphorus, Reactive phosphate, Adsorption, Calcination, Eggshells

Research areas

Environmental Sciences, Environmental Engineering

References

1. FAO. (2022). The State of World Fisheries and Aquaculture 2022. Towards Blue Transformation. FAO. https://doi.org/10.4060/cc0461en
2. Quina, M. J., Soares, M. A. R., & Quinta-Ferreira, R. (2017). Applications of industrial eggshell as a valuable anthropogenic resource. Resources, Conservation and Recycling. https://doi.org/10.1016/j.resconrec.2016.09.027
3. Sugiura, S. H. (2018). Phosphorus, Aquaculture, and the Environment. Reviews in Fisheries Science & Aquaculture, 26(4), 515–521. https://doi.org/10.1080/23308249.2018.1471040
4. Tizo, M. S., Blanco, L. A. V., Cagas, A. C. Q., Dela Cruz, B. R. B., Encoy, J. C., Gunting, J. V., Arazo, R. O., & Mabayo, V. I. F. (2018). Efficiency of calcium carbonate from eggshells as an adsorbent for cadmium removal in aqueous solution. Sustainable Environment Research. https://doi.org/10.1016/j.serj.2018.09.002
5. Quina, M. J., Soares, M. A. R., & Quinta-Ferreira, R. (2017). Applications of industrial eggshell as a valuable anthropogenic resource. Resources, Conservation and Recycling. https://doi.org/10.1016/j.resconrec.2016.09.027

Funding

1. Ministry of Higher Education Malaysia (No. (LRGS/1/2018/USM/01/1/2) (UTAR/4411/S01))

Supplemental files

No data provided

Additional information

Competing interests

No competing interests were disclosed.

Data availability statement

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

Creative Commons license

Copyright © 2023 Tan et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.