Green synthesis, characterization and application of calcium carbonate nanoparticles in the effective treatment of grey water for sustainable water management

---

Authors

Hajer Ahmed Ali Al-Lezami¹ , Geetha Devi¹

1. National University of Science & Technology

Conference / event

Proceedings of the First International Conference on Environmental Sciences and Engineering for Sustainable Development, March 2022 (Virtual)

Poster summary

The disposal of grey water into environment leads to dissolved oxygen depletion and bacterial growth. This study aimed to develop CaCO3 nanoparticles by homogenization and precipitation process . The synthesized nanoparticles were utilized in the batch treatment of grey water by varying the contact time, solution pH, agitation speed, and nanoparticle dosage. The effectiveness of the treatment was assessed by measuring the Total Suspended Solids (TSS), Chemical Oxygen Demand (COD), Total Dissolved Solids (TDS), Dissolved Oxygen (DO), and turbidity. The best results are pH 8.0, 100 rpm agitation speed, 60 minutes contact time, and 0.7 g of nanoparticles. This novel research aligns with the United Nations Sustainable Development Goal 6 (Clean water and sanitation) and oman vision 2040. This community engagement project is cost effective, eco-friendly and the particles can be used as additive in concrete mix to strengthen the materials thereby contributing to a cleaner environment.

Keywords

Contamination, Grey water, Nanoparticles, Recycling

Research areas

Chemical Engineering, Environmental Engineering, Nanoengineering, Environmental Sciences

References

1. Asim AY, Tabassum P, Khalid U, Mohamad NMI (2020) Role of Nanomaterials in the Treatment of Wastewater: A Review. Water 12: 495 -504, https://doi.org/ 10.3390/w12020495.
2. Bilsen BB (2019) Recycling/reusing grey water and yellow water (human urine): motivations, perspectives and reflections into the future. Desalination and Water Treatment, 172: 212–223, https://do i.org/10.5004/dwt.2019.24667.
3. Dhanu RS, Chidambaram S, Harish B (2019) Treatment and effective utilization of greywater. Applied Water Science 9: 90-99 https://doi.org/10.1007/s13201-019-0966-0
4. Freddy L, Mara A, Fabio AD, Samir B (2021) Optimization of CaCO3 synthesis through the carbonation route in a packed bed reactor, Powder Technology 377:868-881 https://doi.org/10.1016/j.powtec.2020.09.036

Funding

1. No funding received (No. -)

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 Al-Lezami 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.