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    Experimental Studies for Construction of a Microbial Fuel Cell (MFC) in Continuous Flow Mode

    , M.Sc. Thesis Sharif University of Technology Sadeghi Haskoo, Mohammad Amin (Author) ; Vossoughi, Manoochehr (Supervisor) ; Aalemzadeh, Iran (Supervisor)
    Abstract
    In this research performance of microbial fuel cells (MFCs) in continuous flow mode was studied. Different anodic chambers were tested and it was found that granular activated carbons (GACs) produced the highest power density (1228 mW/m3) in comparison with multiple anodes (731 mW/m3), single anode (294 mW/m3) and polymeric packings (40 mW/m3). It was also shown that in a plug-anodic chamber (PAC) the power output is reduced by reducing agitation of anodic volume. Adding more GACs to anodic chamber results in power increase, however by increasing occupied volume from 80% to 100% the power increase was negligible in result of cathodic reactions limitations. Feed flowrate was increased from... 

    Investigation of the Membrane Characteristics on the Performance of Microbial Fuel Cell

    , M.Sc. Thesis Sharif University of Technology Nikousefat , Omid (Author) ; Torkian, Ayoub (Supervisor) ; Gobal, Freydoon (Supervisor)
    Abstract
    The process of human populations growth, limited resources of fossil fuels and its environmental consequences have driven the international community to Renewable Energy. Microbial fuel cell (MFC) has ability of simultaneous wastewater treatment and electricity generation (Energy). This technology can be considered as one of the proposed solutions to reduce costs of wastewater treatment and power generation. Separators are one of the major components of the MFC that have direct impact on cell performance. On the other hand, high costs of the conventional types have caused to limiting development of the MFC in the last decade.
    In this study, inexpensive and available glass wool membrane... 

    Investigation of Application of Nano-Photocatalytic Degradation for Industrial Wastewater Treatmen

    , M.Sc. Thesis Sharif University of Technology Falahati, Mohammad (Author) ; Roosta Azad, Reza (Supervisor) ; Vossoughi, Manouchehr (Supervisor)
    Abstract
    The main objective of this project is the deposition of photo-catalysts on cement and concrete blocks with an emphasis on commercialization. We started with an extensive study of common methods introduced in previous literature, and conclude with a number of suggestions for industrialization. First, slurry and sol-gel deposition of the photo-catalysts on blocks of type 2 commercial cement which is one of the most used materials in construction of buildings and waste-water treatment plants has been examined to reach a method of sample formation. Due to the simplicity of common methods and low quality of formed samples (less than 5 percent aging efficiency), the obtained experience was used to... 

    The Review of Possibility of Municipal Wastewater Treatment on Kish Island by Constructed Wetland and Trickling Filter Pretreatment

    , M.Sc. Thesis Sharif University of Technology Zandkarimi, Ahmad (Author) ; Hashemian, Jamaloddin (Supervisor)
    Abstract
    Constructed wetlands are natural systems for wastewater treatment that Proper functionality of these systems to remove organic matter, pathogens, micro pollutants and etc., Are considered as environmental friendly systems. Proper capabilities of pollution removal and inexpensive cost of construction, commissioning and maintenance of these systems compared to engineering WWTPs in the world is leading to growing constructed wetlands. Due to the increasing use of artificial wetlands in the world for post treatment wastewater, because of right capabilities of this systems, and the absence of any natural wastewater treatment systems on Kish Island, this study investigates the possibility of... 

    Optimization of Water Consumption and Wastewater Treatment in Refinery

    , M.Sc. Thesis Sharif University of Technology Khajian, Nafiseh (Author) ; Shayegan, Jalaloddin (Supervisor)
    Abstract
    Water is used as a key material in different processes of chemical industries. Considering abundant demand of chemical industries for water, pollution that threats this valuable material and the fact that there is currently no proper substitute for water, an urgent necessity is felt for economic utilization of water in industrial processes and optimal use of water resources. A variety of methods have been developed for analysis of water consumption in industrial processes, amongst are Pinch methodology and Mathematical Programming approach. In this thesis a Petroleum Refinery has been preferred as a case study in which optimization of water consumption in the aforementioned petroleum... 

    Design and Simulation of Process Units for Various Municipal Wastewater Treatment Methods

    , M.Sc. Thesis Sharif University of Technology Bahadory, Taimaz (Author) ; Shayegan, Jalaloddin (Supervisor)
    Abstract
    In this thesis, an algorithm is developed based on Multi Criteria Decision Analysis (Analytical Hierarchy Process, TOPSIS) combination with Fuzzy logic, and then user-friendly software with a GUI was designed and introduced. By using this method, it becomes possible to compare processes based on their ratings and users desired importance, and finally determine the closest process to the user ideal choice  

    Optimization of Aeration & Dissolved Oxygen Concentration in Moving Bed Bio Reactors

    , M.Sc. Thesis Sharif University of Technology Shokrani Baighi, Mahdi (Author) ; Borghei, Mehdi (Supervisor)
    Abstract
    In this research the performance of the Moving Bed Biofilm Rector (MBBR) in different amounts of dissolved oxygen (DO) was investigated. Reactor with a useful volume of 15 liters was used in this study. In order to obtain optimum oxygen concentration, stayed at 6, 10 and 15 hours, and at different levels of dissolved oxygen in the range 0.5 -6 mg/lit, the amount of organic material was removed respectively. Also, in two different aeration intensity of 3.5 and 5.5 liters per minute at different values of e% (percentage of filling of media) the mass transfer coefficient values were obtained. When the aeration intensity increases from 3.5 to 5.5 liters per minute, and the percentage of 40%... 

    Investigation of Microbial Electrolysis Cell Using Wastewater from Food Industries

    , M.Sc. Thesis Sharif University of Technology Jafari Chamgordani, Behnaz (Author) ; Alemzadeh, Iran (Supervisor) ; Kariminia, Hamid Reza (Supervisor)
    Abstract
    Using microbial electrolysis cells (MEC) for hydrogen production has been considered in recent years. So far, synthetic wastewaters containing substances such as glucose and acetate have been mainly used in MECs and industrial wastewaters have not been widely studied. Food industry wastewater is a suitable choice for application in microbial electrolysis cell due to its biodegradable materials. In present research, dairy wastewater and sludge collected from UASB reactor of Iran Dairy Industries company, Tehran were initially used in a dual chamber microbial fuel cell until a stable voltage was generated .Afterward, the system was converted to a MEC applying a predetermined voltage. The... 

    Immobilization of Enzymes to Nanoparticles for use in Wastewater Treatment

    , M.Sc. Thesis Sharif University of Technology Nisan, Roya Sadat (Author) ; Alemzadeh, Iran (Supervisor)
    Abstract
    Nowadays , application of enzymes as biocatalysts in wastewater treatment processes is increasing. It is economically important to reuse enzymes and increase their stability in these types of processes. Therefore, was immobilization of enzymes and using them in wastewater treatment have a great importance.In this project, Horseradish peroxidase enzyme, whose effect on phenol removal reactions in other studies has been proven before, was immobilized on the alginate-coated magnetic nanoparticles, to investigate the effect of immobilization on the stability and function of this enzyme for phenol removal. The enzyme was immobilized at the temperature of 25 ° C and pH = 8, according to the data... 

    Studying the Treatment of Pharmaceutical Waste, Using Moving Bed Biofilm Reactor

    , M.Sc. Thesis Sharif University of Technology Fatehifar, Maryam (Author) ; Borgheie, Mehdi (Supervisor)
    Abstract
    Pharmaceutical waste has attracted considerable attention, in the Past two decades. These pollutants had not previously been detected in the environment. In fact, the concentration of pharmaceuticals became a matter of concern after the increase in the production and consumption of drugs. Nowadays, considering their higher consumption and more developed detection technologies, they are found in waste water, treated water, rivers, etc. The purpose of this research is to study treatment of a Synthetic waste water contaminated by Diclofenac and Ibuprofen in a Moving Bed Biofilm Reactor. An aerobic Moving Bed Biofilm Reactor (MBBR) with the volume of 8.5 liters and Kaldness packing filling ratio... 

    Photocatalytic Degradation of Dye in Wastewater Using Nanomaterials Based Zinc-iron

    , M.Sc. Thesis Sharif University of Technology Rezaei, Salar (Author) ; Kazemeini, Mohammad (Supervisor) ; Mahmudi, Niaz Mohammad (Co-Supervisor) ; Baqalha, Morteza (Co-Supervisor)
    Abstract
    Removing pollutants of water and, in general, wastewater treatment is one of the most important issues in the world. In this research, we synthesized a nanophotocatalyst based on znic-iron in the form of a magnetic core-shell Fe3O4@ZIF-8, and used to degrade the malachite green toxic color of wastewater. SEM, XRD and FT-IR analyzes have been taken and analyzed fore all three core, shell and core-shell composite catalysts.Due to the band gap of core-shell nanocomposite and the performance of the malachite green dye, a photocatalytic process under the visible light was obtained, which at an optimum amount of photocatalyst 0.003g, we reach 99.2% dye degradation at the 30ppm concentration. This... 

    Influence of an Anaerobic Stage on Membrane Fouling in MBR

    , M.Sc. Thesis Sharif University of Technology Mehrazaran, Mehdi (Author) ; Borghei, Mehdi (Supervisor) ; Musavi, Abbas (Co-Advisor)
    Abstract
    Clean water is a growing need for humanity all around the Earth. Due to the shortage of clean water resources in most parts of our planet, wastewater treatment and reuse has been of great value in past decades. Much research has been conducted to improve treatment systems. One of the most recent advancements in water and wastewater treatment field is application of membrane bioreactor systems. Despite many advantages of these systems, membrane fouling has been the main drawback since the creation and application of them. The main objective of this research is to investigate the probable fouling reduction and head loss in flat sheet UF membranes due to the application of an anaerobic... 

    Sustainable Wastewater Treatment: Indicators and Technologies

    , M.Sc. Thesis Sharif University of Technology Nouri Goukeh, Mojtaba (Author) ; Abrishamchi, Ahmad (Supervisor) ; Dansh-Yazdi, Mohammad (Co-Supervisor)
    Abstract
    An increase of wastewater treatment plants and wastewater treatments methods have increased the importance of selection of best wastewater treatment alternative. This selection should not be merely based on the quality of effluent, but the whole factors (economic, environmental, technical and social factor) should be considered. Different methods for the assessment of wastewater treatment plants is used. For example, life cycle assessment is used for the evaluation of environmental impacts or cost-benefit analysis are used for economic analysis. But, for selection of the most sustainable technology whole factors should be evaluated together. Multi-criteria decision-making methods can be... 

    Development of a Bio-Refinery Based on Olive Wastes

    , M.Sc. Thesis Sharif University of Technology Hasani, Reihane (Author) ; Kariminia, Hamid-Reza (Supervisor) ; Eshraghi, Saeed (Supervisor)
    Abstract
    In this project, Olive Mill Wastes (OMW) has been considered as a raw material for a bio-refinery. The project is consisted of a design section using SuperPro Designer software and an experimental section. The biorefinery was designed using the software after conducting a survey on the production of different value added material from OMW. The designed process consisted of xanthan gum, methane gas and agriculture fertilizer production. As much as 15000 L of the diluted OMW (to 50% of the initial concentration) is purified and 88 Kg xanthan gum (in 7 days), 2840 Kg methane gas and 200 Kg fertilizer in 25 days are produced at the same time.
    In the experimental section, effect of applying... 

    Design and Optimization of Microbial Fuel Cell (MFC) for Organic Pollution

    , M.Sc. Thesis Sharif University of Technology Nabavian, Alborz (Author) ; Vossoughi, Manouchehr (Supervisor) ; Seif Kordi, Ali Akbar (Supervisor)
    Abstract
    A Microbial fuel cell is a Bioreactor in which chemical bands are broken and their energy convert to electricity by bio-catalysts such as microorganisms and enzymes. Depletion of energy resources encouraged researchers to investigate microbial fuel cell as a power bio-resource. MFCs produce electricity or hydrogen without any net carbon emission. Nowadays, real applications of microbial fuel cells are limited because their power density level is very low (about 1000 mW/m2). Many research projects are running to modify MFCs operation and optimize its costs. The most important application of MFCs is electricity production, hydrogen production, waste water treatment and BOD5 biosensor. In this... 

    Construction and Optimum Condition Selection for Microbial Fuel Cell for Organic Matter Removal and Electricity Generation

    , Ph.D. Dissertation Sharif University of Technology Hosseinpour, Mohammad Reza (Author) ; Vossoughi, Manoochehr (Supervisor) ; Alemzadeh, Iran (Supervisor)
    Abstract
    A Microbial fuel cell is a Bioreactor in which chemical bands are broken and their energy convert to electricity by bio-catalysts such as microorganisms and enzymes.In this project, construction, substrate investigation and optimization of operational parameters were done. Microbial fuel cell as a waste water treatment method was considered in this project. As a result, different substrate were used in anode chamber of constructed microbial fuel cell. The most important ones were waste water containing ethylene glycol and crude oil.Consequently, lack of information about cathode operational parameters was led to optimum condition selection for pH, buffer concentration and ionic strength as... 

    Investigating the Reduction of Sewage Sludge Volume in Kish slandRefineries with the Help of Mud Eating Worms

    , M.Sc. Thesis Sharif University of Technology Heidari, Moosa (Author) ; Hashemian, Jamal (Supervisor)
    Abstract
    A major environmental challenge for wastewater treatment in Iran and other countries is the disposal of excess sludge produced during the biological process. This project has been developing and testing a technology that will help to overcome this challenge in Kish Island wastewater plant. Results demonstrate it can perform highly effective treatment of municipal wastewater while producing low levels of sludge.Applicationofvermifiltrationfor treatment of wastewater sludge using the Eiseniafetida earthworm species. The earthworms’ gut acted as a biofilter whereby there was reduction in the sewage wastewater’s solid and liquid organic and inorganic wastes through ingestion and expelling these... 

    Experimental Investigation of the Microbial Fuel Cell–Microbial Electrolysis Cell Coupled System for Dairy Wastewater Treatment and Hydrogen Production

    , M.Sc. Thesis Sharif University of Technology Rezaei Ansari, Mustapha (Author) ; Yaghmaei, Soheyla (Supervisor) ; Roosta Azad, Reza (Supervisor)
    Abstract
    Microbial electrolysis cell- microbial fuel cell (MFC-MEC) coupled system is one of the novel method, for in-situ utilization from the wastewater and generating electricity and hydrogen simultaneously. In this system, required energy for microbial electrolysis cell supply by electric energy generated in microbial fuel cell. Implementation of this system is complicated, because of its unsteady state nature. In this study, it is demonstrated that the hydrogen production in such an MEC-MFC coupled sustem can be manipulated through adjusting the power input on the MEC. The power input of the MEC is regulated by adding MFCs connected into the circuit in series. When one MFC add to the coupled... 

    Treatment of Surfactant Wastewater by IFAS Bioreactors

    , M.Sc. Thesis Sharif University of Technology Moradian, Amin (Author) ; Borgheei, Mahdi (Supervisor) ; Moslehi, Parivash (Supervisor)
    Abstract
    In the modern societies, wastewater treatment is essential in achieving high level of standard in environmental protection and disposal. Recently, many researches are performed to study the surfactants’ biological decomposition in wastewater treatment process. In this project, fixed bed aerobic reactors are used in order to remove surfactant from wastewater. Integrated fixed film activation sludge reactor (IFAS) is used to remove surfactants and organic matters. It also used to study the capability of micro organisms in organic load removal in fixed bed biofilm for biological treatment of industrial wastewater. Pumice stone were used as the support in the reactor. The pumice stone is a... 

    Optimization of Fluidized Bed Bioreactor (FBBR) for Wastewater Treatment by Pumice Stone

    , M.Sc. Thesis Sharif University of Technology Sharafifar, Milad (Author) ; Borgheei, Mahdi (Supervisor) ; Pak, Ali (Supervisor)