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Comparison of adsorption process by GAC with novel formulation of coagulation - Flocculation for color removal of textile wastewater
, Article International Journal of Environmental Research ; Volume 2, Issue 3 , 2008 , Pages 239-248 ; 17356865 (ISSN) ; Seif, S ; Javid, A. H ; Borghei, M ; Sharif University of Technology
2008
Abstract
This study evaluates the effectiveness of adsorption process by Granular Activated Carbon (GAC) compared with a novel formulation of coagulation - flocculation process for dye removal from textile wastewater. In this regard, acidic, reactive, disperse and direct red dye are used to prepare the synthetic dye. Dominant wave length for each dye is determined by spectrophotometeric method. Using GAC as adsorbent, equilibrium time and adsorption isotherm of each dye are determined with aid of spectrophotometric method. The results show that GAC can not remove dispersed red dye. Acidic red, direct red and reactive red of 5 mg/L concentration are removed by GAC up to %90, %88 and %43 in 30, 60 and...
Fluoride Removal from Sludge's of Evaporation Lagoons of Isfahan’s UCF Plant
, M.Sc. Thesis Sharif University of Technology ; Samadfam, Mohammad (Supervisor) ; Firouz Zare, Mahmoud (Co-Advisor) ; Ghasemi, Mohamad Reza (Co-Advisor)
Abstract
Nuclear energy is one of the most important sources of energy from the economical point of view and also in terms of cleanliness and safety. Hence, strategically, uranium is one of the most basic elements of the earth and nowadays, the importance of this element is more marked due to the nuclear industry developement. Therefore, uranium recovery from the wastes generated during nuclear fuel production in Isfahan’s uranium conversion plant- in which yellow cake is converted to uranium hexafluoride- is quite pivotal. In this experimental research, we have to remove Fluoride from waste after dissolution by several methods like precipitation. After that uranium is extracted from the sludge of...
Investigation of Microbial Electrolysis Cell Using Wastewater from Food Industries
, M.Sc. Thesis Sharif University of Technology ; 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...
Studies on recycling of zinc-containing waste
, Article REWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology, Madrid, 26 September 2004 through 29 September 2004 ; 2005 , Pages 2797-2799 ; 8495520060 (ISBN) ; Halali, M ; Sharif University of Technology
2005
Abstract
In this report, the possibility of recovering zinc oxide from zinc containing wastes, also the effect of temperature, time and depth of bed on recycling has been studied. Zinc oxide with a purity of 93.5% was obtained
Investigation of the Membrane Characteristics on the Performance of Microbial Fuel Cell
, M.Sc. Thesis Sharif University of Technology ; 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...
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 ; 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...
Optimization of Water Consumption and Wastewater Treatment in Refinery
, M.Sc. Thesis Sharif University of Technology ; 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...
Photocatalytic Degradation of Dye in Wastewater Using Nanomaterials Based Zinc-iron
,
M.Sc. Thesis
Sharif University of Technology
;
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...
Design and Optimization of Microbial Fuel Cell (MFC) for Organic Pollution
, M.Sc. Thesis Sharif University of Technology ; 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...
Use of modified bentonite for phenolic adsorption in treatment of olive oil mill wastewater
, Article Iranian Journal of Science and Technology, Transaction B: Engineering ; Volume 30, Issue 5 , 2006 , Pages 613-619 ; 03601307 (ISSN) ; Alemzadeh, I ; Vossoughi, M ; Sharif University of Technology
2006
Abstract
Natural and modified clays were applied as adsorbents for the removal of organic contaminants from wastewater. This study presents an investigation on the technical feasibility of using modified minerals that are named organoclay for treatment of dissolved substances, mainly polyphenols in olive mill wastewater. The different parameters such as applied cation dosage were effective on the removal of contaminants by these adsorbents (%CEC), pollutant concentration, pH and particle size of minerals. In this investigation bentonite particles were modified by stirring the clay with a long chain quaternary ammonium cation. Doses of the applied cation varied from zero to 1.5 times the clay CEC....
Experimental Studies for Construction of a Microbial Fuel Cell (MFC) in Continuous Flow Mode
, M.Sc. Thesis Sharif University of Technology ; 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...
Construction of a New Membrane Bioreactor for Industrial Wastewater Treatment
, M.Sc. Thesis Sharif University of Technology ; Seifkordi, Ali Akbar (Supervisor) ; Hemati, Mohmoud (Co-Advisor) ; Rekabdar, Fatemeh (Co-Advisor)
Abstract
In recent years membrane bioreactors (MBR) were widely used as an advanced process for industrial wastewater treatment. But fouling issue causes some restrictions in these systems. So for fouling reduction many researches were done.In this study for fouling improvement, blending of hydrophilic polymer (PAN) with main polymer PVDF was used. Blending membrane in phase inversion process with DMAC as solvent and water as non-solvent was made. For pore-forming in membranes, PVP as hydrophilic additive with three different composition was added and then for more enhancement of antifouling property of membrane, TiO2 nanoparticles with four different composition were added to polymeric...
Preparation of Polycarbonate Membrane for Industrial Wastewater Treatment in Membrane Bioreator
, M.Sc. Thesis Sharif University of Technology ; Mousavi, Abbas (Supervisor) ; Bastani, Dariush (Supervisor)
Abstract
Today, membrane bioreactors (MBRs) process is one of the most important options in industrial and municipal wastewater treatment. In MBRs, membrane has an essential influence on their performance. In this study, polycarbonate was exploited as membrane to evaluate its performance in MBR since it has excellent mechanical properties. However, polycarbonate is brittle and breaks at low elongation at room temperature. Solution blending was utilized to improve polycarbonate’s properties. Blending membrane was characterized and assessed by scanning electron microscopy (SEM) and tensile strength. Polycarbonate solution blending with polyurehatne which has excellent toughness and flexibility enhance...
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 ; 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...
Design and Simulation of Process Units for Various Municipal Wastewater Treatment Methods
, M.Sc. Thesis Sharif University of Technology ; 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
Immobilization of Enzymes to Nanoparticles for use in Wastewater Treatment
, M.Sc. Thesis Sharif University of Technology ; 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...
Application of Membrane Distillation Technology for Treating Saline Water of Sarcheshme Copper Refinery
, M.Sc. Thesis Sharif University of Technology ; Shaygan, Jalaleddin (Supervisor)
Abstract
Sarcheshme Copper refinery is using ion exchange columns to supply deionized water to the refinery. Every day, 240 cubic meters of waste water from ion exchange columns process are released in nature. The main purpose of this research is to use membrane distillation to purify this wastewater, which reduces the fresh water requirement and at the same time prevents environmental pollution. Membrane distillation technology is capable to purify the high salinity wastewater that other conventional membrane technologies are not able to purify. In this study, the PTFE membrane was used due to its high permeability and low surface energy with pore size of 0.22 μm and membrane thickness of 0.2 to...
Influence of an Anaerobic Stage on Membrane Fouling in MBR
, M.Sc. Thesis Sharif University of Technology ; 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 ; 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...
Treatment of Surfactant Wastewater by IFAS Bioreactors
, M.Sc. Thesis Sharif University of Technology ; 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...