Evaluating the effectiveness of coagulation–flocculation treatment on a wastewater from the moroccan leather tanning industry : An ecological approach
The removal of pollutants from tannery wastewaters, which is renowned for its substantial volumes, intricate composition, and considerable hazards to human health and the environment, is a prominent research area in the field of water treatment. The aim of this study is to employ a bio-coagulant der...
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| Language: | English |
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Elsevier
2024-03-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024030871 |
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| author | Ghita El Mouhri Ibtissame Elmansouri Halima Amakdouf Hajar Belhassan Rabie Kachkoul Fatima Ezzahra El oumari Mohammed Merzouki Anissa Lahrichi |
| author_facet | Ghita El Mouhri Ibtissame Elmansouri Halima Amakdouf Hajar Belhassan Rabie Kachkoul Fatima Ezzahra El oumari Mohammed Merzouki Anissa Lahrichi |
| author_sort | Ghita El Mouhri |
| collection | DOAJ |
| description | The removal of pollutants from tannery wastewaters, which is renowned for its substantial volumes, intricate composition, and considerable hazards to human health and the environment, is a prominent research area in the field of water treatment. The aim of this study is to employ a bio-coagulant derived from Parkinsonia aculeata seeds and a bio-flocculant derived from Hibiscus esculentus to minimise the concentration of pollutants in the combined wastewater originating from tanneries. In the course of the research, a thorough physicochemical analysis of the coagulating and flocculating agents, Parkinsonia aculeata (PA) and Hibiscus esculentus (HE), was performed using techniques such as XRD (X-ray diffraction), FTIR (Fourier-transform infrared spectroscopy), and SEM-EDS (scanning electron microscopy-energy dispersive X-ray spectroscopy). This analysis aimed to determine the composition and characteristics of these biomasses. Subsequently, a comprehensive overview was conducted to summarize the various factors that influence the treatment of tannery wastewater through coagulation/flocculation. This was accomplished by manipulating the target factors and observing their impact on the removal of specific physicochemical parameters such as chemical oxygen demand (COD), electrical conductivity (EC), total chromium (Cr) and Optical density (OD). The variables that were established include pH, dosage of coagulant and flocculant, as well as the speed and duration of agitation in both the fast and slow mixing stages. The experiments were carried out while taking into account the optimal parameters, leading to the near-complete removal of all analyzed pollutants. The optimal requirements for the Parkinsonia aculeata-Hibiscus esculentus Coagulation Flocculation System involve adjusting the pH to 8, choosing concentrations of approximately 1.25 g L−1 and 0.6 g L−1 for the coagulant and flocculant respectively, maintaining a fast speed of 170 rpm for 3 min while keeping the slow agitation at around 30 rpm for 20 min. The removal rates achieved after treating tannery wastewater using the PA-HE coagulant-flocculant combination demonstrate high efficacy, with values reaching approximately 100% for TSS, 98.71% for BOD5, 99.93% for COD, 98.88% for NH4+, 98.21% for NO3−, 90.32% for NO2−, 93.13% for SO42−, 95.44% for PO43−, 96.08% for OD and 60% for total chromium. These results indicate the successful removal of a wide range of pollutants from tannery wastewater through the PA-HE treatment method. In predicting the CF treatment approach, PCA has been employed to preprocess the input data and determine the key variables that impact the process. This can streamline the modeling process and enhance the precision of the predictions. |
| first_indexed | 2024-03-07T14:01:02Z |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-04-24T23:14:57Z |
| publishDate | 2024-03-01 |
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| spelling | doaj.art-5d4aa59174744b878986aabdcb99f74c2024-03-17T07:57:11ZengElsevierHeliyon2405-84402024-03-01105e27056Evaluating the effectiveness of coagulation–flocculation treatment on a wastewater from the moroccan leather tanning industry : An ecological approachGhita El Mouhri0Ibtissame Elmansouri1Halima Amakdouf2Hajar Belhassan3Rabie Kachkoul4Fatima Ezzahra El oumari5Mohammed Merzouki6Anissa Lahrichi7Laboratory of Biochemistry, Faculty of Medicine, Pharmacy and Dental Medicine, University Sidi Mohammed Ben Abdellah, BP 1893, Km 22, Road of Sidi Harazem, Fez, 30070, Morocco; Higher Institute of Nursing Professions and Health Techniques of Fez/Taza, Ministry of Health and Social Protection, 35000, Taza, Morocco; Corresponding author. Boite Postale 1893 - KM 2.200 Route Sidi Harazem Fès, 30070, Morocco.Laboratory of Environmental Biotechnology, Agri-food, Health Sidi Mohamed Ben Abdellah University, Faculty of Science, 30070, Fez, MoroccoLaboratory of Environmental Biotechnology, Agri-food, Health Sidi Mohamed Ben Abdellah University, Faculty of Science, 30070, Fez, MoroccoLaboratory of Environmental Biotechnology, Agri-food, Health Sidi Mohamed Ben Abdellah University, Faculty of Science, 30070, Fez, MoroccoLaboratory of Biochemistry, Faculty of Medicine, Pharmacy and Dental Medicine, University Sidi Mohammed Ben Abdellah, BP 1893, Km 22, Road of Sidi Harazem, Fez, 30070, Morocco; Higher Institute of Nursing Professions and Health Techniques of Fez, Ministry of Health and Social Protection, 30000, Fez, MoroccoLaboratory of Epidemiology and Research in Health Sciences, University Sidi Mohammed Ben Abdellah, Faculty of Medicine, Pharmacy and Dental Medicine, Fez 30070, MoroccoLaboratory of Environmental Biotechnology, Agri-food, Health Sidi Mohamed Ben Abdellah University, Faculty of Science, 30070, Fez, MoroccoLaboratory of Biochemistry, Faculty of Medicine, Pharmacy and Dental Medicine, University Sidi Mohammed Ben Abdellah, BP 1893, Km 22, Road of Sidi Harazem, Fez, 30070, MoroccoThe removal of pollutants from tannery wastewaters, which is renowned for its substantial volumes, intricate composition, and considerable hazards to human health and the environment, is a prominent research area in the field of water treatment. The aim of this study is to employ a bio-coagulant derived from Parkinsonia aculeata seeds and a bio-flocculant derived from Hibiscus esculentus to minimise the concentration of pollutants in the combined wastewater originating from tanneries. In the course of the research, a thorough physicochemical analysis of the coagulating and flocculating agents, Parkinsonia aculeata (PA) and Hibiscus esculentus (HE), was performed using techniques such as XRD (X-ray diffraction), FTIR (Fourier-transform infrared spectroscopy), and SEM-EDS (scanning electron microscopy-energy dispersive X-ray spectroscopy). This analysis aimed to determine the composition and characteristics of these biomasses. Subsequently, a comprehensive overview was conducted to summarize the various factors that influence the treatment of tannery wastewater through coagulation/flocculation. This was accomplished by manipulating the target factors and observing their impact on the removal of specific physicochemical parameters such as chemical oxygen demand (COD), electrical conductivity (EC), total chromium (Cr) and Optical density (OD). The variables that were established include pH, dosage of coagulant and flocculant, as well as the speed and duration of agitation in both the fast and slow mixing stages. The experiments were carried out while taking into account the optimal parameters, leading to the near-complete removal of all analyzed pollutants. The optimal requirements for the Parkinsonia aculeata-Hibiscus esculentus Coagulation Flocculation System involve adjusting the pH to 8, choosing concentrations of approximately 1.25 g L−1 and 0.6 g L−1 for the coagulant and flocculant respectively, maintaining a fast speed of 170 rpm for 3 min while keeping the slow agitation at around 30 rpm for 20 min. The removal rates achieved after treating tannery wastewater using the PA-HE coagulant-flocculant combination demonstrate high efficacy, with values reaching approximately 100% for TSS, 98.71% for BOD5, 99.93% for COD, 98.88% for NH4+, 98.21% for NO3−, 90.32% for NO2−, 93.13% for SO42−, 95.44% for PO43−, 96.08% for OD and 60% for total chromium. These results indicate the successful removal of a wide range of pollutants from tannery wastewater through the PA-HE treatment method. In predicting the CF treatment approach, PCA has been employed to preprocess the input data and determine the key variables that impact the process. This can streamline the modeling process and enhance the precision of the predictions.http://www.sciencedirect.com/science/article/pii/S2405844024030871Coagulation-flocculationParkinsonia aculeataHibiscus esculentusTannery wastewaterTreatmentOptimisation |
| spellingShingle | Ghita El Mouhri Ibtissame Elmansouri Halima Amakdouf Hajar Belhassan Rabie Kachkoul Fatima Ezzahra El oumari Mohammed Merzouki Anissa Lahrichi Evaluating the effectiveness of coagulation–flocculation treatment on a wastewater from the moroccan leather tanning industry : An ecological approach Heliyon Coagulation-flocculation Parkinsonia aculeata Hibiscus esculentus Tannery wastewater Treatment Optimisation |
| title | Evaluating the effectiveness of coagulation–flocculation treatment on a wastewater from the moroccan leather tanning industry : An ecological approach |
| title_full | Evaluating the effectiveness of coagulation–flocculation treatment on a wastewater from the moroccan leather tanning industry : An ecological approach |
| title_fullStr | Evaluating the effectiveness of coagulation–flocculation treatment on a wastewater from the moroccan leather tanning industry : An ecological approach |
| title_full_unstemmed | Evaluating the effectiveness of coagulation–flocculation treatment on a wastewater from the moroccan leather tanning industry : An ecological approach |
| title_short | Evaluating the effectiveness of coagulation–flocculation treatment on a wastewater from the moroccan leather tanning industry : An ecological approach |
| title_sort | evaluating the effectiveness of coagulation flocculation treatment on a wastewater from the moroccan leather tanning industry an ecological approach |
| topic | Coagulation-flocculation Parkinsonia aculeata Hibiscus esculentus Tannery wastewater Treatment Optimisation |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024030871 |
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