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Effectiveness of reducing Ca–Mg hardness using NaOH precipitation, in Ghardaïa groundwater | ||
| مدل سازی و مدیریت آب و خاک | ||
| مقاله 3، دوره 6، شماره 2، 1405، صفحه 36-51 اصل مقاله (6.51 M) | ||
| نوع مقاله: Special Issue: New Approaches to Water and Soil Management and Modeling | ||
| شناسه دیجیتال (DOI): 10.22098/mmws.2025.18308.1679 | ||
| نویسندگان | ||
| Kheira Bouamer* 1؛ Hamed Boukhari1؛ Khaled Mansouri2 | ||
| 1Laboratory of Materials, Energy Systems Technology and Environment, Université de Ghardaia, Ghardaia, Algeria | ||
| 2Department of Process Engineering, Faculty of Science and Technology, Mathematics and Applied Science, Ghardaïa University, Ghardaïa, Algeria | ||
| چکیده | ||
| In Saharan regions, ensuring fresh water to consumers is very difficult, as the predominant source is groundwater loaded with mineral salts from reservoir rocks. The study is based on the choice of caustic soda (NaOH) as a treatment element by chemical precipitation. The protocol followed includes treatment with different doses of NaOH: (500 mg/L of NaOH), (250 mg/L of NaOH and 250 mg/L of Na2CO3 adjusting once with acetic acid CH3COOH and another time with hydrochloric acid HCl), then optimized doses of NaOH alone. The results are then examined, on the one hand, on the reduction of hardness (TH) and, on the other hand, on its impact on pH, electrical conductivity (EC) and salinity. The results indicate that the first dose significantly reduces permanent calcium and magnesium hardness (TH) from 558 mg/L exceeding (Algerian standard limited 500 mg/L) to 328 mg/L, with increases in pH exceeding the potability threshold, while treatment with sodium hydroxide and sodium carbonate are effective in reducing or even eliminating Ca2+ and Mg2+ ions, but there is still a strong increase in alkalinity. The solution is adjusted by an acid still presents additional effects such as solubility of salts and therefore the need to adjust the electrical conductivity (EC). Finally, the treatment is optimized at a low dose of NaOH (20 mg/L) without the addition of sodium carbonate. This dose has proven to be the most adequate, thus allowing a substantial reduction in TH (615 reaching 400 mg/L) while balancing the pH and electrical conductivity (EC) parameters. These results demonstrate the effectiveness of NaOH in the treatment of hard water, while keeping control of its influence on other parameters such as sodium (225.77 mg/L of Na+) where it presents an increase of up to 10%, although it is a significant increase, it is found that the waters of the region exceed this dose in their natural state. Overall, the experience still offers promising and practical solutions for domestic, agricultural and industrial applications and guaranteeing compliance with water quality standards. | ||
| کلیدواژهها | ||
| Water analysis؛ Permanent hardness؛ Sodium hydroxide؛ Sodium carbonate؛ TH reduction | ||
| مراجع | ||
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Adu-manu, K. S.; Tapparello, C.; Heinzelman, W., Katsriku, F.A. & Abdulai, J. D. (2017) Water quality monitoring using wireless sensor networks : Current trends and future research directions. ACM Transactions on Sensor Networks (TOSN), 13(1), 1-41. doi: 10.1145/3005719 Aureli, A.; Ganoulis, J.; Margat, J. (2008) Groundwater resources in the Mediterranean region: importance, uses and sharing. Water Mediterr, p. 96-105, 2008 Bouamer, K.; Remini, B.; Habi, M.; Rezzag, K. (2019) The effects of the flood of October 2008 on the water quality in the M’zab valley, Algeria. Journal of water and land Developmen. Couture, I. (2004). Analyse d’eau pour fin d’irrigation MAPAQ, Montérégie-Est. Himmi, N., Hasnaoui, M., Fekhaoui, M., Foutlane, A., Bourchich, H., El Maroufy, M., & Bennazou, T. (2005). Variabilités des descripteurs physiques, chimiques et biologiques d'un réservoir de stokage (lagunage mixte, en Slimane-Maroc). Revue des sciences de l'eau, 18, 91-107. doi: 10.7202/705578ar Karlsson Faudot, É. (2021). Investigation of sustainable methods to reduce water hardness in drinking water treatment plants. Luo, J., & Wan, Y. (2013). Effects of pH and salt on nanofiltration—a critical review. Journal of membrane Science, 438, 18-28. doi: 10.1016/j.memsci.2013.03.029 Nayar, R. (2020). Assessment of Water Quality Index and Monitoring of Pollutants by Physico-Chemical Analysis in Water Bodies : A Review. International Journal of Engineering Research & Technology, 9 (1). doi : 10.17577/IJERTV9IS010046 Patil, P. N., Sawant, D. V., & Deshmukh, R. N. (2012). Physico-chemical parameters for testing of water – A review. International Journal of Environmental Sciences, 3(3), 1194-1207 Siemens, J. S. (2018). Elementary students’ enjoyment and social-emotional engagement in school: The influence of male and female teachers [Mémoire de maîtrise, Département d’administration de l’éducation, University of Saskatchewan]. Harvest – Université de Saskatchewan. Tang, C., Rygaard, M., Rosshaug, P. S., Kristensen, J. B., & Albrechtsen, H. J. (2021). Evaluation and comparison of centralized drinking water softening technologies: Effects on water quality indicators. Water Research, 203, 117439. doi: 10.1016/j.watres.2021.117439 Van Der Gun, J. (2021). Groundwater resources sustainability. In: Global groundwater: Elsevier, 2021. p. 331-345. | ||
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