Experimental investigation focuses on the desalination productivity and water quality using a Nano CuO-coated floated absorber in a solar still

Year 2025, Volume: 9 Issue: 4, 791 - 800, 08.10.2025

M Yuvaperiyasamy

https://doi.org/10.31127/tuje.1638403

Abstract

Solar desalination effectively mitigates water scarcity by utilizing direct sunlight to evaporate water into vapor, subsequently collecting the distilled water. Saltwater desalination was carried out using the coated solar still (CSS) and the conventional solar still (TSS) at depths of 3, 5, and 7 cm, respectively. The coated solar still was made even more efficient by adding (30 wt%) of copper oxide (CuO) nanoparticles to the black paint on the sides of the solar basin, increasing heat convection. The coated copper oxide nanoparticle steel sheet, measuring 0.05 mm in thickness, was secured to the water surface using a floated frame during the water level adjustment. This study was carried out over three days, examining various water depths while maintaining consistent climatic conditions. The TSS and CSS yields were 250 ml, 260 ml, and 255 ml, respectively, based on measurements taken at 3 cm, 5 cm, and 7 cm water depths for the cumulative distillate water production. At a water level of 5 cm, the cumulative water production of the CSS experimental field increased by 71% to 445 ml compared to the measurements taken on the previous two days. While in TSS, the pH of the salty water dropped to 7.86, in CSS, it fell to 7.46. Water with a high salt content has its total dissolved solids (TDS) cut in half.

Keywords

Productivity , Floating heat absorber , Coated solar still , Copper oxide nanoparticle , Traditional solar still

References

• Polatta\cs, Z., & others. (2024). Building integration of solar energy systems in Türkiye and world. Turkish Journal of Engineering (TUJE), 8(2).
• Kumaravel, S., Nagaraj, M., & Bharathıraja, G. (2024). Experımental And Numerıcal Investıgatıon On The Thermal Performance Of A Sıngle-Slope Solar Stıll. Journal Of The Balkan Tribological Association, 30(4).
• Bayhan, B., & Arslan, G. (2018). Applicability of solar and wind energy technologies for a non-residential building. Turkish Journal of Engineering, 2(1), 27–34.
• Kumaravel, S., Meenakshi Sunadaram, N., & Bharathiraja, G. (2023). Thermal Investigation of Single slope solar still by using Energy Storage Material. Journal of Renewable Energy and Environment, 10(4), 156–162.
• Mahian, O., Kianifar, A., Jumpholkul, C., Thiangtham, P., Wongwises, S., & Srisomba, R. (2015). Solar distillation practice for water desalination systems. Journal of Thermal Engineering, 1(4), 287–288.
• Sailash, N., & Sakthivel, T. G. (2024). Comparative Performance Analysis of Novel Single-Slope Conventional Solar Still and Solar Still with ZnO Water Nanofluids through Experimental Investigation. E3S Web of Conferences, 491, 1024.
• Omar, F. A., Pamuk, N., & Kulaks\iz, A. A. (2023). A critical evaluation of maximum power point tracking techniques for PV systems working under partial shading conditions. Turkish Journal of Engineering, 7(1), 73–81.
• Oymak, A., & Tür, M. R. (2022). PV connected Pumped-Hydro Storage System. 1(March), 16–18.
• Kumar, H. A., Venkateswaran, H., Kabeel, A. E., Chamkha, A., Athikesavan, M. M., Sathyamurthy, R., & Kasi, K. (2021). Recent advancements, technologies, and developments in inclined solar still—a comprehensive review. Environmental Science and Pollution Research, 28(27), 35346–35375. https://doi.org/10.1007/s11356-021-13714-y
• Panchal, H., Mevada, D., & Sathyamurthy, R. (2021). The requirement of various methods to improve distillate output of solar still: a review. International Journal of Ambient Energy, 42(5), 597–603.
• Kaviti, A. K., Naike, V. R., Ram, A. S., & Thakur, A. K. (2022). Energy and exergy analysis of a truncated and parabolic finned double slope solar stills. International Journal of Ambient Energy, 43(1), 6210–6223.
• Çetinkaya, S. (2023). The effects of additive on photovoltaic performance of Cu 2 ZnSnS 4 promising solar absorbers. 178–187.
• Kumar, P. M., Kumar, C. S., Muralidharan, K., Muniratnam, Y., Abraham, K., Manikandan, V., Stalin, P. M. J., & Prasanth, S. J. (2021). Augmenting the performance of conventional solar still through the nano-doped black paint (NDBP) coating on absorber. Materials Today: Proceedings, 47, 4929–4933.
• Kaviti, A. K., Balaji, J. S. G., Ram, A. S., & Kumari, A. A. (2021). An overview on hydrogel materials for solar desalination. Materials Today: Proceedings, 44, 2526–2532.
• Hida, A., Bualoti, R., & Qosja, P. (2024). Optimal design, cost analysis and impact of a tracked bifacial PV plant in distribution system. Advanced Engineering Science, 4, 65–75. https://publish.mersin.edu.tr/index.php/ades/article/view/1495
• Alwan, N. T., Shcheklein, S., & Ali, O. (2021). Investigation of the coefficient of heat transfer and daily cumulative production in a single-slope solar distiller at different water depths. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 43(21), 2820–2837. https://doi.org/10.1080/15567036.2020.1842561
• Modi, K. V, Jani, H. K., & Gamit, I. D. (2021). Impact of orientation and water depth on productivity of single-basin dual-slope solar still with Al2O3 and CuO nanoparticles. Journal of Thermal Analysis and Calorimetry, 143(2), 899–913. https://doi.org/10.1007/s10973-020-09351-1
• He, P., Hao, L., Liu, N., Bai, H., Niu, R., & Gong, J. (2021). Controllable synthesis of sea urchin-like carbon from metal-organic frameworks for advanced solar vapor generators. Chemical Engineering Journal, 423, 130268. https://doi.org/10.1016/J.CEJ.2021.130268
• Yuvaperiyasamy, M., Senthilkumar, N., & Deepanraj, B. (2023). Experimental and theoretical analysis of solar still with solar pond for enhancing the performance of sea water desalination. Water Reuse, 13(4), 620–633. https://doi.org/10.2166/wrd.2023.102
• Kaviti, A. K., Akkala, S. R., Poho\vrel\`y, M., & Sikarwar, V. S. (2024). Performance Analysis of Floating Structures in Solar-Powered Desalination. Energies, 17(3), 621.
• Chauhan, V. K., Shukla, S. K., Tirkey, J. V., & Singh Rathore, P. K. (2021). A comprehensive review of direct solar desalination techniques and its advancements. Journal of Cleaner Production, 284, 124719. ttps://doi.org/https://doi.org/10.1016/j.jclepro.2020.124719
• Thakur, A. K., & Sathyamurthy, R. (2021). An experimental investigation of a water desalination unit using different microparticle-coated absorber plate : yield , thermal , economic , and environmental assessments.
• Thakur, A. K., Sathyamurthy, R., Velraj, R., Saidur, R., Lynch, I., Venkatesh, R., Kumar, P. G., Kim, S. C., & Sillanpää, M. (2022). A novel solar absorber using activated carbon nanoparticles synthesized from bio-waste for the performance improvement of solar desalination unit. Desalination, 527, 115564. https://doi.org/https://doi.org/10.1016/j.desal.2022.115564
• Karen, W. M. J., Wong, C. Y., & Melvin, G. J. H. (2022). Desalination of seawater using carbon-coated solar absorber in solar still. IOP Conference Series: Materials Science and Engineering, 1217(1), 12001.
• Ter-Gazarian, A. G. (2020). Effect of energy storage on transient regimes in the power system. Energy Storage for Power Systems, 1(1), 217–233. https://doi.org/10.1049/pbpo146e_ch15
• Qiao, P., Wu, J., Li, H., Xu, Y., Ren, L., Lin, K., & Zhou, W. (2019). Plasmon Ag-Promoted solar-thermal conversion on floating carbon cloth for seawater desalination and sewage disposal. ACS Applied Materials and Interfaces, 11(7), 7066–7073. https://doi.org/10.1021/acsami.8b20665
• Ahmad, M. S., Han, S. S., Zafar, A., Ghafoor, U., Rahim, N. A., Ali, M. U., & Rim, Y. S. (2021). Indoor and outdoor performance study of metallic zinc particles in black paint to improve solar absorption for solar still application. Coatings, 11(5). https://doi.org/10.3390/coatings11050536
• Sathyamurthy, R., Kabeel, A. E., Balasubramanian, M., Devarajan, M., Sharshir, S. W., & Manokar, A. M. (2020). Experimental study on enhancing the yield from stepped solar still coated using fumed silica nanoparticle in black paint. Materials Letters, 272, 127873. https://doi.org/https://doi.org/10.1016/j.matlet.2020.127873
• Kospa, D. A., Ahmed, A. I., Samra, S. E., & Ibrahim, A. A. (2021). High efficiency solar desalination and dye retention of plasmonic/reduced graphene oxide based copper oxide nanocomposites. RSC Advances, 11(25), 15184–15194.
• Attia, M. E. H., Kabeel, A. E., Elaloui, E., Abdelgaied, M., & Abdullah, A. (2022). Experimental study on improving the yield of hemispherical distillers using CuO nanoparticles and cooling the glass cover. Solar Energy Materials and Solar Cells, 235, 111482. https://doi.org/10.1016/J.SOLMAT.2021.111482
• Zuo, S., Xia, D., Guan, Z., Yang, F., Cheng, S., Xu, H., Wan, R., Li, D., & Liu, M. (2021). Dual-functional CuO/CN for highly efficient solar evaporation and water purification. Separation and Purification Technology, 254(August 2020), 117611. https://doi.org/10.1016/j.seppur.2020.117611
• Sivakumar, S., Velmurugan, C., Dhas, D. S. E. J., Solomon, A. B., & Dev Wins, K. L. (2020). Effect of nano cupric oxide coating on the forced convection performance of a mixed-mode flat plate solar dryer. Renewable Energy, 155, 1165–1172. https://doi.org/10.1016/j.renene.2020.04.027
• Yuvaperiyasamy, M., Senthilkumar, N., & Deepanraj, B. (2023). Experimental investigation on the performance of a pyramid solar still for varying water depth, contaminated water temperature, and addition of circular fins. International Journal of Renewable Energy Development, 12(6), 1123–1130. https://doi.org/10.14710/ijred.2023.57327
• Mostafa, M., Abdullah, H. M., & Mohamed, M. A. (2020). Modeling and Experimental Investigation of Solar Stills for Enhancing Water Desalination Process. 219457–219472. https://doi.org/10.1109/ACCESS.2020.3038934
• Alwan, N. T., Shcheklein, S. E., & Ali, O. M. (2020). Evaluation of the productivity for new design single slope solar still at different saltwater depth. Journal of Physics: Conference Series, 1706(1). https://doi.org/10.1088/1742-6596/1706/1/012002
• Manokar, A. M., Taamneh, Y., Winston, D. P., Vijayabalan, P., Balaji, D., Sathyamurthy, R., Sundar, S. P., Mageshbabu, D., & others. (2020). Effect of water depth and insulation on the productivity of an acrylic pyramid solar still--An experimental study. Groundwater for Sustainable Development, 10, 100319.
• Zanganeh, P., Goharrizi, A. S., Ayatollahi, S., & Feilizadeh, M. (2020). Nano-coated condensation surfaces enhanced the productivity of the single-slope solar still by changing the condensation mechanism. Journal of Cleaner Production, 265, 121758. https://doi.org/10.1016/j.jclepro.2020.121758
• Kabeel, A. E., Omara, Z. M., Essa, F. A., Abdullah, A. S., Arunkumar, T., & Sathyamurthy, R. (2017). Augmentation of a solar still distillate yield via absorber plate coated with black nanoparticles. Alexandria Engineering Journal, 56(4), 433–438. https://doi.org/10.1016/j.aej.2017.08.014
• Kumaravel, S., Nagaraj, M., & Bharathiraja, G. (2024). Improved Thermal Performance and Distillate of Conventional Solar Still via Copper Plate, Phase Change Material and CuO Nanoparticles. Recent Patents on Nanotechnology.
• Abdullah, A. S., Omara, Z. M., Essa, F. A., Alqsair, U. F., Aljaghtham, M., Mansir, I. B., Shanmugan, S., & Alawee, W. H. (2022). Enhancing trays solar still performance using wick finned absorber, nano- enhanced PCM. Alexandria Engineering Journal, 61(12), 12417–12430. https://doi.org/10.1016/j.aej.2022.06.033
• Panchal, H., Sadasivuni, K. K., Ahmed, A. A. A., Hishan, S. S., Doranehgard, M. H., Essa, F. A., Shanmugan, S., & Khalid, M. (2021). Graphite powder mixed with black paint on the absorber plate of the solar still to enhance yield: An experimental investigation. Desalination, 520(August), 115349. https://doi.org/10.1016/j.desal.2021.115349
• Alwan, N. T., Majeed, M. H., Shcheklein, S. E., Ali, O. M., & PraveenKumar, S. (2021). Experimental study of a tilt single slope solar still integrated with aluminum condensate plate. Inventions, 6(4), 77.
• Modi, K. V., & Nayi, K. H. (2020). Efficacy of forced condensation and forced evaporation with thermal energy storage material on square pyramid solar still. Renewable Energy, 153, 1307–1319. https://doi.org/10.1016/j.renene.2020.02.095
• Suraparaju, S. K., & Natarajan, S. K. (2021). Experimental investigation of single-basin solar still using solid staggered fins inserted in paraffin wax PCM bed for enhancing productivity. Environmental Science and Pollution Research, 28(16), 20330–20343. https://doi.org/10.1007/s11356-020-11980-w
• Kaviti, A. K., Teja, M., Madhukar, O., Teja, P. B., Aashish, V., Gupta, G. S., Sivaram, A., & Sikarwar, V. S. (2023). Productivity augmentation of solar stills by coupled copper tubes and parabolic fins. Energies, 16(18), 6606.