Biosorption of diazinon by a pre-treated alimentary industrial waste: equilibrium and kinetic modeling
Abstract This study explores the feasibility of pre-treated coffee waste (PCW) as biosorbent for the removal of diazinon. The effect of the pesticide concentration (6–20 mg L−1), contact time, adsorbent dose (0.2–1.2 g L−1), solution pH (3–11.5), temperature (15–40 °C) and co-existing inorganic ions...
| Main Authors: | , , , |
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| פורמט: | Article |
| שפה: | English |
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SpringerOpen
2017-04-01
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| סדרה: | Applied Water Science |
| נושאים: | |
| גישה מקוונת: | http://link.springer.com/article/10.1007/s13201-017-0563-z |
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| author | N. Yeddou Mezenner H. Lagha H. Kais M. Trari |
| author_facet | N. Yeddou Mezenner H. Lagha H. Kais M. Trari |
| author_sort | N. Yeddou Mezenner |
| collection | DOAJ |
| description | Abstract This study explores the feasibility of pre-treated coffee waste (PCW) as biosorbent for the removal of diazinon. The effect of the pesticide concentration (6–20 mg L−1), contact time, adsorbent dose (0.2–1.2 g L−1), solution pH (3–11.5), temperature (15–40 °C) and co-existing inorganic ions (H2PO4 −, NO3 −) on the diazinon biosorption over PCW is investigated. The experimental results indicate an optimal pH of 7.3 for the diazinon elimination on PCW (1 g L−1). The Langmuir model describes well the isotherm data with a high regression coefficient (R 2 > 0.990) and a maximum monolayer biosorption capacity of 18.52 mg g−1 at 15 °C. It is also observed that the intra-particle diffusion is not the rate-controlling step. A comparison is evaluated between the pseudo-second-order and intra-particle diffusion kinetic models; the experimental data are well fitted by the pseudo-second-order kinetic model. The biosorption capacity decreases with increasing temperature for a diazinon concentration of 10 mg L−1. The negative enthalpy ΔH° (−63.57 kJ/mol) indicates that the diazinon biosorption onto PCW is exothermic. Under optimal conditions, the biosorption reaches 95% after 90 min. The removal efficiency decreases from 95 to 65.67 and 48.9% for the diazinon alone and in the presence of NO3 − and H2PO4 − (100 mg L−1), respectively. |
| first_indexed | 2024-12-10T18:04:25Z |
| format | Article |
| id | doaj.art-cbd554f8b8b1479c9511afb1c595d521 |
| institution | Directory Open Access Journal |
| issn | 2190-5487 2190-5495 |
| language | English |
| last_indexed | 2024-12-10T18:04:25Z |
| publishDate | 2017-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Applied Water Science |
| spelling | doaj.art-cbd554f8b8b1479c9511afb1c595d5212022-12-22T01:38:39ZengSpringerOpenApplied Water Science2190-54872190-54952017-04-01774067407610.1007/s13201-017-0563-zBiosorption of diazinon by a pre-treated alimentary industrial waste: equilibrium and kinetic modelingN. Yeddou Mezenner0H. Lagha1H. Kais2M. Trari3Laboratory of Chemical Engineering, Faculty of Mechanical and Chemical Engineering, USTHBLaboratory of Chemical Engineering, Faculty of Mechanical and Chemical Engineering, USTHBLaboratory of Storage and Valorization of Renewable Energies, Faculty of Chemistry, USTHBLaboratory of Storage and Valorization of Renewable Energies, Faculty of Chemistry, USTHBAbstract This study explores the feasibility of pre-treated coffee waste (PCW) as biosorbent for the removal of diazinon. The effect of the pesticide concentration (6–20 mg L−1), contact time, adsorbent dose (0.2–1.2 g L−1), solution pH (3–11.5), temperature (15–40 °C) and co-existing inorganic ions (H2PO4 −, NO3 −) on the diazinon biosorption over PCW is investigated. The experimental results indicate an optimal pH of 7.3 for the diazinon elimination on PCW (1 g L−1). The Langmuir model describes well the isotherm data with a high regression coefficient (R 2 > 0.990) and a maximum monolayer biosorption capacity of 18.52 mg g−1 at 15 °C. It is also observed that the intra-particle diffusion is not the rate-controlling step. A comparison is evaluated between the pseudo-second-order and intra-particle diffusion kinetic models; the experimental data are well fitted by the pseudo-second-order kinetic model. The biosorption capacity decreases with increasing temperature for a diazinon concentration of 10 mg L−1. The negative enthalpy ΔH° (−63.57 kJ/mol) indicates that the diazinon biosorption onto PCW is exothermic. Under optimal conditions, the biosorption reaches 95% after 90 min. The removal efficiency decreases from 95 to 65.67 and 48.9% for the diazinon alone and in the presence of NO3 − and H2PO4 − (100 mg L−1), respectively.http://link.springer.com/article/10.1007/s13201-017-0563-zBiosorptionDiazinonPesticidePre-treated coffee waste |
| spellingShingle | N. Yeddou Mezenner H. Lagha H. Kais M. Trari Biosorption of diazinon by a pre-treated alimentary industrial waste: equilibrium and kinetic modeling Applied Water Science Biosorption Diazinon Pesticide Pre-treated coffee waste |
| title | Biosorption of diazinon by a pre-treated alimentary industrial waste: equilibrium and kinetic modeling |
| title_full | Biosorption of diazinon by a pre-treated alimentary industrial waste: equilibrium and kinetic modeling |
| title_fullStr | Biosorption of diazinon by a pre-treated alimentary industrial waste: equilibrium and kinetic modeling |
| title_full_unstemmed | Biosorption of diazinon by a pre-treated alimentary industrial waste: equilibrium and kinetic modeling |
| title_short | Biosorption of diazinon by a pre-treated alimentary industrial waste: equilibrium and kinetic modeling |
| title_sort | biosorption of diazinon by a pre treated alimentary industrial waste equilibrium and kinetic modeling |
| topic | Biosorption Diazinon Pesticide Pre-treated coffee waste |
| url | http://link.springer.com/article/10.1007/s13201-017-0563-z |
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