Enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of Taroudant (Souss-Massa Morocco): mechanism, optimization and evolution toxicity
This paper discusses the adsorption mechanism of nitrate ions using natural clay from an aqueous solution. The adsorbent’s heterogeneous structure with deep voids and significant porosity was also seen under the scanning electron microscopy (SEM). This structure is assumed to be essential for bindin...
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| Language: | English |
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Elsevier
2025-09-01
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| Series: | Waste Management Bulletin |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949750725000689 |
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| author | Abdallah Assouani Abdelkader Dabagh Mohamed EL-Habacha Guellaa Mahmoudy Mhamed Abali Mohamed Chiban Naima Alahiane Mohamed Zerbet |
| author_facet | Abdallah Assouani Abdelkader Dabagh Mohamed EL-Habacha Guellaa Mahmoudy Mhamed Abali Mohamed Chiban Naima Alahiane Mohamed Zerbet |
| author_sort | Abdallah Assouani |
| collection | DOAJ |
| description | This paper discusses the adsorption mechanism of nitrate ions using natural clay from an aqueous solution. The adsorbent’s heterogeneous structure with deep voids and significant porosity was also seen under the scanning electron microscopy (SEM). This structure is assumed to be essential for binding and collecting nitrate ions onto the adsorbent surface. Different functional groups have been identified to facilitate the adsorption of nitrate ions onto adsorbent. The Brunauer Emmett et Teller (BET) surface examination revealed that the natural raw clay (NRC) surface is around 6.44 m2/g. With a 98 % correlation coefficient, the Langmuir isotherm is the most appropriate model to explain the adsorption process. 241.18 mg/g was the maximum adsorption capacity for nitrate ions at 291 K. The pseudo second-order model represents a good explanation of adsorption kinetics. According to thermodynamic calculations, adsorption occurs spontaneously and exothermically on natural clay. The natural clay was recycled; the removal of nitrates was 42.08 % after the third cycle.The results of Taguchi experimental design (TED), analysis of variance (ANOVA), and response surface methodology (RSM) showed that initial concentration, contact time, and pH are the most significant factors influencing the efficiency of removal with a contribution of 76.96 %, 11.29 %, and 4.3 %, respectively. The maximum removal efficiency of nitrate ions in optimal operating conditions was 82.67 %. Which at the optimal conditions of 0.5 g/L, 360 min, 1000 mg/L, 18 °C, pH 4 for nitrate ions. The results confirm the effectiveness of natural clay in lentil seed germination and nitrate removal from water. |
| format | Article |
| id | doaj-art-dba8cc5a125b4014b706027fc4dd0155 |
| institution | Kabale University |
| issn | 2949-7507 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Waste Management Bulletin |
| spelling | doaj-art-dba8cc5a125b4014b706027fc4dd01552025-08-23T04:50:14ZengElsevierWaste Management Bulletin2949-75072025-09-013310023910.1016/j.wmb.2025.100239Enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of Taroudant (Souss-Massa Morocco): mechanism, optimization and evolution toxicityAbdallah Assouani0Abdelkader Dabagh1Mohamed EL-Habacha2Guellaa Mahmoudy3Mhamed Abali4Mohamed Chiban5Naima Alahiane6Mohamed Zerbet7Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Zohr University, BP. 8106, Hay Dakhla, Agadir, Morocco; Corresponding authors.Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Zohr University, BP. 8106, Hay Dakhla, Agadir, Morocco; Corresponding authors.Laboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Zohr University, BP. 8106, Hay Dakhla, Agadir, MoroccoLaboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Zohr University, BP. 8106, Hay Dakhla, Agadir, MoroccoLaboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Zohr University, BP. 8106, Hay Dakhla, Agadir, MoroccoLaboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Zohr University, BP. 8106, Hay Dakhla, Agadir, MoroccoAgence of the Hydraulic Basin of Souss Massa, B.P 432, Agadir 80000 CP, MoroccoLaboratory of Applied Chemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Zohr University, BP. 8106, Hay Dakhla, Agadir, MoroccoThis paper discusses the adsorption mechanism of nitrate ions using natural clay from an aqueous solution. The adsorbent’s heterogeneous structure with deep voids and significant porosity was also seen under the scanning electron microscopy (SEM). This structure is assumed to be essential for binding and collecting nitrate ions onto the adsorbent surface. Different functional groups have been identified to facilitate the adsorption of nitrate ions onto adsorbent. The Brunauer Emmett et Teller (BET) surface examination revealed that the natural raw clay (NRC) surface is around 6.44 m2/g. With a 98 % correlation coefficient, the Langmuir isotherm is the most appropriate model to explain the adsorption process. 241.18 mg/g was the maximum adsorption capacity for nitrate ions at 291 K. The pseudo second-order model represents a good explanation of adsorption kinetics. According to thermodynamic calculations, adsorption occurs spontaneously and exothermically on natural clay. The natural clay was recycled; the removal of nitrates was 42.08 % after the third cycle.The results of Taguchi experimental design (TED), analysis of variance (ANOVA), and response surface methodology (RSM) showed that initial concentration, contact time, and pH are the most significant factors influencing the efficiency of removal with a contribution of 76.96 %, 11.29 %, and 4.3 %, respectively. The maximum removal efficiency of nitrate ions in optimal operating conditions was 82.67 %. Which at the optimal conditions of 0.5 g/L, 360 min, 1000 mg/L, 18 °C, pH 4 for nitrate ions. The results confirm the effectiveness of natural clay in lentil seed germination and nitrate removal from water.http://www.sciencedirect.com/science/article/pii/S2949750725000689AdsorptionIons nitrateNatural clayOptimizationWater pollutionGermination test |
| spellingShingle | Abdallah Assouani Abdelkader Dabagh Mohamed EL-Habacha Guellaa Mahmoudy Mhamed Abali Mohamed Chiban Naima Alahiane Mohamed Zerbet Enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of Taroudant (Souss-Massa Morocco): mechanism, optimization and evolution toxicity Waste Management Bulletin Adsorption Ions nitrate Natural clay Optimization Water pollution Germination test |
| title | Enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of Taroudant (Souss-Massa Morocco): mechanism, optimization and evolution toxicity |
| title_full | Enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of Taroudant (Souss-Massa Morocco): mechanism, optimization and evolution toxicity |
| title_fullStr | Enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of Taroudant (Souss-Massa Morocco): mechanism, optimization and evolution toxicity |
| title_full_unstemmed | Enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of Taroudant (Souss-Massa Morocco): mechanism, optimization and evolution toxicity |
| title_short | Enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of Taroudant (Souss-Massa Morocco): mechanism, optimization and evolution toxicity |
| title_sort | enhancing the performance of natural clay for nitrate ions removal from groundwater and wastewater of the region of taroudant souss massa morocco mechanism optimization and evolution toxicity |
| topic | Adsorption Ions nitrate Natural clay Optimization Water pollution Germination test |
| url | http://www.sciencedirect.com/science/article/pii/S2949750725000689 |
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