| Titre : | Optimization and Application of Date Palm Seed Derived Biochar for Augmented Adsorption of Volatile Organic Compounds: A Specialized Inquiry into Trichloroethylene (TCE) and Tetrachloroethylene (PCE) Remediation |
| Auteurs : | Rania Remmani, Auteur ; Rachid Makhloufi, Directeur de thèse |
| Type de document : | Thése doctorat |
| Editeur : | Biskra [Algérie] : Faculté des Sciences Exactes et des Sciences de la Nature et de la Vie, Université Mohamed Khider, 2024 |
| Format : | 1 vol. (115 p.) / ill., couv. ill. en coul / 30cm |
| Langues: | Anglais |
| Mots-clés: | Biochar, Date Palm Seeds, Response Surface Methodology, Optimization, Characterization, Adsorption, Volatile Organic Compounds, Sustainability. |
| Résumé : |
This research delves into the meticulous optimization and characterization of biochar (BC) derived from date palm seeds (DPS) in the Biskra region of Algeria. Guided by Response Surface Methodology (RSM), the study explores the dynamics of BC preparation, emphasizing the interplay between pyrolysis time and temperature. The success of the optimization process is validated through a desirability index of 0.843, showcasing the precision required for tailoring BC to specific environmental and economic contexts. Structural and compositional analyses, including X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), and Scanning Electron Micrograph (SEM), unravel the intricate relationship between precursor material and BC structure. Energy Dispersive X-ray Spectroscopy (EDS) results provide insights into BC’s elemental composition. Surface properties and reactivity assessments, including BET surface area analysis and pH at the point of zero charge (pHpzc), underscore BC’s potential as a versatile adsorbent. The study extends to adsorption assessments, revealing BC’s superior affinity for volatile organic compounds (VOCs) (perchloroethylene (PCE) and trichloroethylene (TCE)). Kinetic studies employing the PSO model and isotherm studies utilizing Freundlich and Langmuir models elucidate BC’s adsorption behavior. The research contributes not only to the field of BC synthesis but also to the broader discourse on sustainable and tailored adsorbents, positioning BC as a multifaceted material with applications in environmental science, materials engineering, and catalysis. |
| Sommaire : |
contents Contents i List of Figures iv List of Tables vi List of Abbreviations vii General Introduction 1 I Literature Review 4 I.1 Water pollution: Sources, Impacts on the Environment, and Health . 4 I.1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 I.1.2 Water Pollution, Pollutants . . . . . . . . . . . . . . . . . . . . 7 I.1.2.1 Water Pollution definition . . . . . . . . . . . . . . . 7 I.1.2.2 Sources of Water Pollution . . . . . . . . . . . . . . . 9 I.1.2.3 Water quality standards . . . . . . . . . . . . . . . . . 12 I.1.3 Effects on the Environment and human health . . . . . . . . . 15 I.1.3.1 Health risk of water pollution . . . . . . . . . . . . . 15 I.1.3.2 Environmental risk of water pollution . . . . . . . . 15 I.1.4 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 I.2 Several CommonWastewater Treatment Approaches . . . . . . . . . 19 I.2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 I.2.2 Sociological Aspects . . . . . . . . . . . . . . . . . . . . . . . . 20 I.2.3 The Vital Role ofWastewater Treatment . . . . . . . . . . . . . 21 I.2.4 CommonWastewater Treatment Methods . . . . . . . . . . . . 22 i I.2.4.1 Physical Treatment . . . . . . . . . . . . . . . . . . . 23 I.2.4.2 Biological Treatment . . . . . . . . . . . . . . . . . . . 26 I.2.4.3 Chemical Treatment . . . . . . . . . . . . . . . . . . . 28 I.2.4.4 Advanced Treatment . . . . . . . . . . . . . . . . . . 33 I.2.5 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 I.3 Adsorption on Carbonaceous materials . . . . . . . . . . . . . . . . . 37 I.3.1 Generalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 I.3.2 Adsorption on Carbonaceous materials . . . . . . . . . . . . . 39 I.3.2.1 Activated Carbonaceous materials . . . . . . . . . . 40 I.3.2.2 Biochar derived carbonaceous materials . . . . . . . 46 I.3.3 Adsorption of Volatile Organic Compounds . . . . . . . . . . 50 I.3.3.1 Volatile Organic Compounds . . . . . . . . . . . . . . 50 I.3.3.2 Adsorption of VOCs . . . . . . . . . . . . . . . . . . . 52 I.3.4 Research Gaps and Justification . . . . . . . . . . . . . . . . . . 53 II Methodology 56 II.1 Procurement and Refinement of Raw Materials . . . . . . . . . . . . . 56 II.1.1 Sourcing of DPS . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 II.1.2 Preprocessing of DPS Powder . . . . . . . . . . . . . . . . . . . 57 II.2 BC Synthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 II.3 Statistical Optimization Utilizing RSM . . . . . . . . . . . . . . . . . . 59 II.4 Regression and Optimization Analysis . . . . . . . . . . . . . . . . . . 62 II.5 Characterization of BC . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 II.5.1 Structural and Compositional Analysis . . . . . . . . . . . . . 63 II.5.1.1 X-Ray Diffraction (XRD) . . . . . . . . . . . . . . . . 63 II.5.1.2 FTIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 II.5.1.3 SEM-EDS . . . . . . . . . . . . . . . . . . . . . . . . . 67 II.5.2 Morphological and Surface Analysis . . . . . . . . . . . . . . . 68 II.5.2.1 BET . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 II.5.3 pHpzc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 II.6 Adsorption Experiments . . . . . . . . . . . . . . . . . . . . . . . . . . 70 II.6.1 Preparation of Stock Solution . . . . . . . . . . . . . . . . . . . 70 ii II.6.2 Kinetic and Isotherm Study . . . . . . . . . . . . . . . . . . . . 71 II.6.3 Determination of VOCs . . . . . . . . . . . . . . . . . . . . . . 72 II.7 Modeling of Adsorption Processes . . . . . . . . . . . . . . . . . . . . 73 III Results and Discussion 76 III.1 BC Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 III.1.1 Exploring the Dynamics of BC preparation process . . . . . . 76 III.1.2 Model’s validation for BC preparation process . . . . . . . . . 79 III.1.3 AScientific and Environmental Impact of Optimizing BC Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 III.2 BC Characterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 III.2.1 Structural and Compositional Analysis . . . . . . . . . . . . . 83 III.2.2 Morphological and Surface Analysis . . . . . . . . . . . . . . . 90 III.3 Adsorption Assessment - Unveiling BC’s Affinity for VOCs . . . . . 92 III.3.1 Kinetic Studies: Probing BC’s Affinity for VOCs . . . . . . . . 92 III.3.2 Isotherm Studies: Unveiling BC’s Interaction with VOCs . . . 95 General Conclusion 102 Bibliographie 104 iii |
| Type de document : | Thése doctorat |
| En ligne : | http://thesis.univ-biskra.dz/id/eprint/6411 |
Disponibilité (1)
| Cote | Support | Localisation | Statut |
|---|---|---|---|
| TCH/111 | Théses de doctorat | bibliothèque sciences exactes | Consultable |
