Agricultural activities and the excessive use of fertilizers significantly contribute to nitrate contamination in the environment. These ions can cause a serious threat to both human health and ecosystems through the contamination of surface water and groundwater. It is therefore necessary to reduce their concentration before consumption. The general objective of this work is to propose new electrochemical treatment methods based on the Design of Experiments Methodology. Indeed, this approach allows to reduce the need for costly and lengtly experimental trials. Various parameters that could improve the efficiency of the process were studied, including initial concentration, pH, electrolysis time, and current intensity, in order to determine the optimal operating conditions. The results show that the process is effective at a reduction current intensity of ?603 mA, a NaNO3 concentration of 100 mg-N/L, and an electrolysis time of 10 min at a slightly basic pH, allowing a nitrate removal efficiency of 91%. The results highlight the importance of statistical modeling in improving and controlling electrochemical processes.
References
[1]
Wang, Q. and Yang, Z. (2016) Industrial Water Pollution, Water Environment Treatment, and Health Risks in China. EnvironmentalPollution, 218, 358-365. https://doi.org/10.1016/j.envpol.2016.07.011
[2]
Srivastav, A.L., Patel, N., Rani, L., Kumar, P., Dutt, I., Maddodi, B.S., et al. (2023) Sustainable Options for Fertilizer Management in Agriculture to Prevent Water Contamination: A Review. Environment, DevelopmentandSustainability, 26, 8303-8327. https://doi.org/10.1007/s10668-023-03117-z
[3]
Bijay-Singh, and Craswell, E. (2021) Fertilizers and Nitrate Pollution of Surface and Ground Water: An Increasingly Pervasive Global Problem. SNAppliedSciences, 3, Article No. 518. https://doi.org/10.1007/s42452-021-04521-8
[4]
Dimé, A.K.D., Diouf, G., Dramé, E.T. and Fall, M. (2018) Caractérisation Physico-Chimique de la Nappe Phréatique Située dans une Zone à Forte Pollution Industrielle: Cas de la Commune de Ngoundiane. Journal de la Société Ouest-Africaine de Chimie, 46, 23-28.
[5]
Katabami, K., Hayakawa, M. and Gando, S. (2016) Severe Methemoglobinemia due to Sodium Nitrite Poisoning. CaseReportsinEmergencyMedicine, 2016, Article ID: 9013816. https://doi.org/10.1155/2016/9013816
[6]
Dimé, A.K.D., Diouf, G., Sarr, M.M. and Fall. M. (2020) Caractérisation Physico-Chimique de la Nappe Phréatique Située dans une Zone à Forte Pollution Industrielle: Cas de la Commune de Rufisque. Revue Ivoirienne des Sciences et Technologie, 35, 163-174.
[7]
Kou, X., Ding, J., Li, Y., Li, Q., Mao, L., Xu, C., et al. (2021) Tracing Nitrate Sources in the Groundwater of an Intensive Agricultural Region. AgriculturalWaterManagement, 250, Article ID: 106826. https://doi.org/10.1016/j.agwat.2021.106826
[8]
Diouf, G., Dime, A.K.D., Dia, A., Yatt, B. and Fall, M. (2024) Caractérisation physico-chimique des sols situés dans une zone à forte pollution industrielle: Cas des communes de Ngoundiane et de Rufisque au Sénégal. InternationalJournalofBiologicalandChemicalSciences, 18, 1128-1139. https://doi.org/10.4314/ijbcs.v18i3.32
[9]
Riaz, M., Ahmad, M.N., Mukhtar, M., Aqsa, and Nawaz, N. (2024) Nitrate Contamination of Soil and Water: Implications for Ecosystem Functions and Human Health. In: Naidu, R., Ed., InorganicContaminantsandRadionuclides, Elsevier, 351-373. https://doi.org/10.1016/b978-0-323-90400-1.00001-x
[10]
Diouf, G., Dime, A.K.D., Boye, M.B., Balde, I., Kane, C. and Fall, M. (2022) Optimisation des Paramètres Influen？ant le Rendement de la Dénitrification Electrochimique de l’Eau par l’Electrode de Ti/RuO2 + IrO2. Afrique Science, 20, 1-10.
[11]
Zaki, N., Charki, A., Hadoudi, N., Fraiha, O., El Ouarghi, H., Salhi, A., et al. (2024) Coagulation-Flocculation Parameters for Simultaneous Removal of Nitrates, Nitrites, Phosphates, and Ammonium from Wastewater: A Mini Review. E3SWebofConferences, 527, Article ID: 03015. https://doi.org/10.1051/e3sconf/202452703015
[12]
Boppella, R., Ahmadi, M., Arndt, B.M., Lustig, D.R. and Nazemi, M. (2024) Pulsed Electrolysis in Membrane Electrode Assembly Architecture for Enhanced Electrochemical Nitrate Reduction Reaction to Ammonia. ACSCatalysis, 14, 18223-18236. https://doi.org/10.1021/acscatal.4c05225
[13]
Wang, X., Wu, X., Ma, W., Zhou, X., Zhang, S., Huang, D., et al. (2023) Free-standing Membrane Incorporating Single-Atom Catalysts for Ultrafast Electroreduction of Low-Concentration Nitrate. Proceedings of the National Academy of Sciences of the United States of America, 120, e2217703120. https://doi.org/10.1073/pnas.2217703120
[14]
Ma, J., Wei, W., Qin, G., Xiao, T., Tang, W., Zhao, S., et al. (2022) Electrochemical Reduction of Nitrate in a Catalytic Carbon Membrane Nano-Reactor. WaterResearch, 208, Article ID: 117862. https://doi.org/10.1016/j.watres.2021.117862
[15]
Fan, Y., Wang, X., Butler, C., Kankam, A., Belgada, A., Simon, J., et al. (2024) Highly Efficient Metal-Free Nitrate Reduction Enabled by Electrified Membrane Filtration. Nature Water, 2, 684-696. https://doi.org/10.1038/s44221-024-00278-7
[16]
Pirrone, N., Garcia-Ballesteros, S., Hernández, S. and Bella, F. (2024) Membrane/electrolyte Interplay on Ammonia Motion Inside a Flow-Cell for Electrochemical Nitrogen and Nitrate Reduction. ElectrochimicaActa, 493, Article ID: 144415. https://doi.org/10.1016/j.electacta.2024.144415
[17]
Liou, Y., Lo, S., Lin, C., Kuan, W. and Weng, S. (2005) Chemical Reduction of an Unbuffered Nitrate Solution Using Catalyzed and Uncatalyzed Nanoscale Iron Particles. JournalofHazardousMaterials, 127, 102-110. https://doi.org/10.1016/j.jhazmat.2005.06.029
[18]
Rodríguez-Maroto, J.M., García-Herruzo, F., García-Rubio, A., Gómez-Lahoz, C. and Vereda-Alonso, C. (2009) Kinetics of the Chemical Reduction of Nitrate by Zero-Valent Iron. Chemosphere, 74, 804-809. https://doi.org/10.1016/j.chemosphere.2008.10.020
[19]
Rezvani, F., Sarrafzadeh, M., Ebrahimi, S. and Oh, H. (2017) Nitrate Removal from Drinking Water with a Focus on Biological Methods: A Review. EnvironmentalScienceandPollutionResearch, 26, 1124-1141. https://doi.org/10.1007/s11356-017-9185-0
[20]
de Santana, M.M., Zanoelo, E.F., Benincá, C. and Freire, F.B. (2018) Electrochemical Treatment of Wastewater from a Bakery Industry: Experimental and Modeling Study. ProcessSafetyandEnvironmentalProtection, 116, 685-692. https://doi.org/10.1016/j.psep.2018.04.001
[21]
Baldé, I., Dimé, A.K.D. and Kane, C. (2023) Production Electrochimique de la Soude: Optimisation et Modélisation du Procédé par la Méthodologie de Surface de Réponse. Afrique Science, 22, 29-41.
[22]
Duan, W., Li, G., Lei, Z., Zhu, T., Xue, Y., Wei, C., et al. (2019) Highly Active and Durable Carbon Electrocatalyst for Nitrate Reduction Reaction. WaterResearch, 161, 126-135. https://doi.org/10.1016/j.watres.2019.05.104
[23]
Teng, M., Ye, J., Wan, C., He, G. and Chen, H. (2022) Research Progress on Cu-Based Catalysts for Electrochemical Nitrate Reduction Reaction to Ammonia. Industrial&EngineeringChemistryResearch, 61, 14731-14746. https://doi.org/10.1021/acs.iecr.2c02495
[24]
Babrauskas, V. and Leggett, D. (2019) Thermal Decomposition of Ammonium Nitrate. FireandMaterials, 44, 250-268. https://doi.org/10.1002/fam.2797
[25]
Boye, M.B., Dimé, A.K.D., Diop, A., Kane, C. and Fall, M. (2023) Process Optimization and Modeling by Response Surface Methodology of Nitrite Electro-Reduction by Ti/RuO2 + IrO2 Electrode. AmericanJournalofAnalyticalChemistry, 14, 531-540. https://doi.org/10.4236/ajac.2023.1412031
[26]
Sghiouer, F.E., Nahli, A., Bouka, H. and Chlaida, M. (2024) Analysis of the Drought Effects on the Physicochemical and Bacteriological Quality of the Inaouene River Water (Taza, Morocco). ScientificAfrican, 25, e02328. https://doi.org/10.1016/j.sciaf.2024.e02328
[27]
Emamjomeh, M.M., Jamali, H.A. and Moradnia, M. (2017) Optimization of Nitrate Removal Efficiency and Energy Consumption Using a Batch Monopolar Electrocoagulation: Prediction by RSM Method. JournalofEnvironmentalEngineering, 143, Article ID: 04017022. https://doi.org/10.1061/(asce)ee.1943-7870.0001210
[28]
Auta, M. (2012) Optimization of Tea Waste Activated Carbon Preparation Parameters for Removal of Cibacron Yellow Dye from Textile Waste Waters. International Journal of Advanced Engineering Research and Studies, 1, 50-56.
[29]
Hassan, A., Samy, G., Hegazy, M., Balah, A. and Fathy, S. (2024) Statistical Analysis for Water Quality Data Using ANOVA (Case Study—Lake Burullus Influent Drains). AinShamsEngineeringJournal, 15, Article ID: 102652. https://doi.org/10.1016/j.asej.2024.102652
[30]
Litu, L., Buema, G., Mosoarca, G. and Harja, M. (2024) Copper Ion Removal by Adsorption Using Fly Ash-Based Geopolymers: Process Optimization Insights from Taguchi and ANOVA Statistical Methods. Materials, 17, Article 3992. https://doi.org/10.3390/ma17163992
[31]
Gebresemati, M., Gabbiye, N. and Sahu, O. (2017) Sorption of Cyanide from Aqueous Medium by Coffee Husk: Response Surface Methodology. JournalofAppliedResearchandTechnology, 15, 27-35. https://doi.org/10.1016/j.jart.2016.11.002
[32]
Elmoubarki, R., Taoufik. M., Moufti, A., Tounsadi, H., Mahjoubi, F.Z., Bouabi, Y., Qourzal, S., Abdennouri, M. and Barka, N. (2017) Box-Behnken Experimental De-sign for the Optimization of Methylene Blue Adsorption onto Aleppo Pine Cones. Journal of Materials and Environmental Sciences, 8, 2184-2191.
[33]
Albavera-Mata, A., Gázquez, J.L. and Vela, A. (2025) Generalized Quadratic Model for Charge Transfer. PhysicalChemistryChemicalPhysics, 27, 11318-11330. https://doi.org/10.1039/d5cp00866b
[34]
Beyene, K.A. (2022) Comparative Study of Linear and Quadratic Model Equations for Prediction and Evaluation of Surface Roughness of a Plain-Woven Fabric. ResearchJournalofTextileandApparel, 27, 281-298. https://doi.org/10.1108/rjta-08-2021-0107
