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Cairo University (2015)

Biosorption of Different Heavy Metals from Wastewater using New Fungi Waste Material

Salman Hussein Abbas

Titre : Biosorption of Different Heavy Metals from Wastewater using New Fungi Waste Material

لامتزاز الحيوي لعدة عناصر ثقيلة من المياه الملوثة بأستخدام مادة جديدة من مخلفات الفطر

Auteur : Salman Hussein Abbas

Université de soutenance : Cairo University

Grade : Doctor of Philosophy (PhD) 2015

Résumé
The single and multi component adsorption/biosorption of heavy metal ions onto granular activated carbon/fungal waste biomass from simulated wastewater were studied in batch and fixed bed adsorber. Several parameters such as pH, dose of adsorbent/biosorbent, contact time and initial concentration that effected the removal and uptake capacity were studied. The results showed that the adsorption/biosorption capacity depends strongly on pH and species of metal ions .Equilibrium isotherms and kinetic adsorption/biosorption of heavy metals onto GAC/W.F. were studied experimentally. Several isotherm models were used to fit the experimental data and Langmuir model was found a suitable to describe the adsorption/biosorption data and they were favorable type. Kinetic studies of adsorption/biosorption of different metal ions showed a good matching of pseudo-second-order with experimental data. For binary, ternary and quaternary systems, different adsorption/biosorption models were used to fit the experimental data. Extended Langmuir model gave the best fitting, for all nulti-systems. Fixed-bed column studies were carried out for single and multi-component systems. The experimental results have been fitted to Thomas model as a second order reversible reaction model. It was found that, the uptake capacity of waste of fungi was greater than that obtained from granular activated carbon (as found in batch system) and the time to reach breakpoint in fixed bed column for biosorption process was longer than that for adsorption process.

Mots clés : Wastewater, Fungi, Biosorption, Activated carbon

Présentation (EULC)

Page publiée le 5 novembre 2018, mise à jour le 3 mars 2019