ESSAIS DE COAGULATION DE L’ACIDE PYROMELLITIQUE EN MILIEUX AQUEUX MINERALISES
The objective of this study is to investigate the effectiveness of coagulation by aluminium sulphate on the removal of aromatic organic compounds and to demonstrate the stoichiometric laws of aluminium sulphate / organic matter. To try to establish correlations between the initial content of this or...
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| Format: | Article |
| Language: | English |
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Institut Marocain de l’Information Scientifique et Technique
2017-12-01
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| Series: | Journal of Water and Environmental Sciences |
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| Online Access: | http://revues.imist.ma/index.php?journal=jwes&page=article&op=view&path%5B%5D=7321&path%5B%5D=6265 |
| _version_ | 1811275536708665344 |
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| author | Naima BACHA Samia ACHOUR |
| author_facet | Naima BACHA Samia ACHOUR |
| author_sort | Naima BACHA |
| collection | DOAJ |
| description | The objective of this study is to investigate the effectiveness of coagulation by aluminium sulphate on the removal of aromatic organic compounds and to demonstrate the stoichiometric laws of aluminium sulphate / organic matter. To try to establish correlations between the initial content of this organic compound and the dose of coagulant to be applied, the pyromellitic acid was dissolved at 1 to 20 mg / l of distilled water and several mineralized waters from Biskra region. For pHs close to neutrality, these aqueous solutions were coagulated by increasing aluminium sulphate dosage. The results obtained indicate that the efficiency of the process as well as the dosage of the coagulant depends on the pH and on the initial concentration of the organic compound but also on the ionic strength of the dilution water. The results also showed that the increasing total mineralization of water had an inhibitory effect on the elimination of pyromellitic acid. Depending on the pH and the total mineralization of the aqueous medium, several mechanisms may be suggested such as complexation with the soluble or insoluble aluminum forms or adsorption on the aluminum hydroxide flocs. Highlighting of a stoichiometry of the reactions showed that the laws linking the dosage of the coagulant to the initial concentration of the pyromellitic acid were highly dependent on the total quantity of mineral salts in the various waters tested. |
| first_indexed | 2024-04-12T23:39:28Z |
| format | Article |
| id | doaj.art-96eb61a89e8f4fff89268497f7331205 |
| institution | Directory Open Access Journal |
| issn | 2509-0445 |
| language | English |
| last_indexed | 2024-04-12T23:39:28Z |
| publishDate | 2017-12-01 |
| publisher | Institut Marocain de l’Information Scientifique et Technique |
| record_format | Article |
| series | Journal of Water and Environmental Sciences |
| spelling | doaj.art-96eb61a89e8f4fff89268497f73312052022-12-22T03:12:01ZengInstitut Marocain de l’Information Scientifique et TechniqueJournal of Water and Environmental Sciences2509-04452017-12-011S.I. ICWR2235242ESSAIS DE COAGULATION DE L’ACIDE PYROMELLITIQUE EN MILIEUX AQUEUX MINERALISESNaima BACHA0Samia ACHOUR1Laboratoire de Recherche en Hydraulique Souterraine et de Surface (LARHYSS). Faculté des Sciences et de la Technologie-Université de Biskra. BP 145, RP 07000. ALGERIELaboratoire de Recherche en Hydraulique Souterraine et de Surface (LARHYSS). Faculté des Sciences et de la Technologie-Université de Biskra. BP 145, RP 07000. ALGERIEThe objective of this study is to investigate the effectiveness of coagulation by aluminium sulphate on the removal of aromatic organic compounds and to demonstrate the stoichiometric laws of aluminium sulphate / organic matter. To try to establish correlations between the initial content of this organic compound and the dose of coagulant to be applied, the pyromellitic acid was dissolved at 1 to 20 mg / l of distilled water and several mineralized waters from Biskra region. For pHs close to neutrality, these aqueous solutions were coagulated by increasing aluminium sulphate dosage. The results obtained indicate that the efficiency of the process as well as the dosage of the coagulant depends on the pH and on the initial concentration of the organic compound but also on the ionic strength of the dilution water. The results also showed that the increasing total mineralization of water had an inhibitory effect on the elimination of pyromellitic acid. Depending on the pH and the total mineralization of the aqueous medium, several mechanisms may be suggested such as complexation with the soluble or insoluble aluminum forms or adsorption on the aluminum hydroxide flocs. Highlighting of a stoichiometry of the reactions showed that the laws linking the dosage of the coagulant to the initial concentration of the pyromellitic acid were highly dependent on the total quantity of mineral salts in the various waters tested.http://revues.imist.ma/index.php?journal=jwes&page=article&op=view&path%5B%5D=7321&path%5B%5D=6265Pyromellitic acidCoagulationMineralizationMechanismsStoichiometry |
| spellingShingle | Naima BACHA Samia ACHOUR ESSAIS DE COAGULATION DE L’ACIDE PYROMELLITIQUE EN MILIEUX AQUEUX MINERALISES Journal of Water and Environmental Sciences Pyromellitic acid Coagulation Mineralization Mechanisms Stoichiometry |
| title | ESSAIS DE COAGULATION DE L’ACIDE PYROMELLITIQUE EN MILIEUX AQUEUX MINERALISES |
| title_full | ESSAIS DE COAGULATION DE L’ACIDE PYROMELLITIQUE EN MILIEUX AQUEUX MINERALISES |
| title_fullStr | ESSAIS DE COAGULATION DE L’ACIDE PYROMELLITIQUE EN MILIEUX AQUEUX MINERALISES |
| title_full_unstemmed | ESSAIS DE COAGULATION DE L’ACIDE PYROMELLITIQUE EN MILIEUX AQUEUX MINERALISES |
| title_short | ESSAIS DE COAGULATION DE L’ACIDE PYROMELLITIQUE EN MILIEUX AQUEUX MINERALISES |
| title_sort | essais de coagulation de l acide pyromellitique en milieux aqueux mineralises |
| topic | Pyromellitic acid Coagulation Mineralization Mechanisms Stoichiometry |
| url | http://revues.imist.ma/index.php?journal=jwes&page=article&op=view&path%5B%5D=7321&path%5B%5D=6265 |
| work_keys_str_mv | AT naimabacha essaisdecoagulationdelacidepyromellitiqueenmilieuxaqueuxmineralises AT samiaachour essaisdecoagulationdelacidepyromellitiqueenmilieuxaqueuxmineralises |