Document Details
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Document Type |
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Thesis |
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Document Title |
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Biological Treatment of Wastewater from Pharmaceutical Industry المعالجة الحيوية لمياه الصرف من الصناعات الدوائية |
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Subject |
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biological sciences department |
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Document Language |
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Arabic |
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Abstract |
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The study aimed to investigate the ability of biological treatment to decontaminate pharmaceuticals wastewater in terms of removal capacity and efficiency using indigenous and/or exogenous bacteria. Water samples were collected from Pharmaceuticals Factory, Jeddah during the course of the study. One indigenous bacterium isolated from final effluent of the Pharmaceuticals factory and 5 exogenous bacteria were identified using traditional biochemical profiling as well as molecular characterization and used in the remediation of that effluent as free living (batch mode) either individual or as mixed culture and also as biofilm (fixed mode). Wastewater quality parameters including pH, DO, TSS, TDS, BOD, COD, FOG, phenol , NH3, NO3 and bacterial TVC were determined before and after treatment and the removal efficiencies were calculated. Results indicated that the raw pharmaceuticals effluents used during this study recorded high levels of all the tested parameters. This makes it one of the strongest industrial effluents that has high pollution potential and dangerous effects on the receiving environments and creates many difficulties in its treatment. Batch treatment of Pharmaceuticals effluent for 6 days was time and bacterial species-dependent with Pseudomonas fluorescens (PF) considered the most efficient for all the tested parameters. However, although high removals were achieved, the residual levels of all the parameters still slightly above the maximum permissible limits (MPL) for the safe discharge except FOG that reached safe limit. Therefore, this bacterium was selected, fixed on white stone as supporting material and used as biofilm system to enhance the treatment of the Pharmaceuticals effluent and to bring it to the safe limits for discharging into the environment. Fixation of the bacterium has many advantages over its planktonic free-living counterpart. It enhances the bacterial growth, reduces wastewater toxicity, increases bacterial resistance, remarkably increases removal efficiencies towards the involved contaminants and reduces the treatment time, a character which is extremely important in wastewater treatment. However, most of the parameters except phenol still had high residual concentrations due to the very short time (5 h) of the treatment. To overcome this problem, it is recommended to 1) using of 2 or 3 biofilm units in sequence, 2) increasing the exposure times and 3) using a pre or post oxidation step that helps the biological treatment to reach acceptable limits for safe discharge. Finally, results of the present study confirmed that the proposed biofilm system with the highly active bacterium Pseudomonas fluorescens represents a very promising, renewable and cheap biotechnology for the treatment of wide range of contaminated effluents not only in the industrial sector but also for domestic and agricultural wastewater. |
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Supervisor |
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dr.Ebtesam Abd El-Hamid El-Bestawy |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1433 AH
2012 AD |
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Co-Supervisor |
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Dr.Jamal Saber Mohammed Saber |
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Added Date |
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Sunday, June 24, 2012 |
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Researchers
| لما ابراهيم الجديبي | Al-Jdibi, Lama Ibrahim | Researcher | Master | |
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