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Experimental Investigation of Electricity Generation in Dual Chamber Microbial Fuel Cell- Effective Parameters in Cathode Chamber
, M.Sc. Thesis Sharif University of Technology ; Kariminia, Hamid Reza (Supervisor) ; Roshandel, Ramin (Supervisor)
Abstract
Two major challenges facing countries all around the world are the demand for renewable energy resources and treatment of large quantities of industrial and household wastewaters. One of the new and environmentally acceptable methods to produce green energy is Microbial Fuel Cells (MFCs), which has been noted by many researchers in recent years. MFC is a new technology which has the ability to produce green energy along with treatment of wastewater stream, based on oxidation of organic maters through microbial metabolism. In this study we investigated the effects of different cathode chamber parameters on operation and efficiency of a two chamber MFC at laboratory scale. These parameters...
Review on Dye Degradability by Enzymatic Method in a Bioreactor
, M.Sc. Thesis Sharif University of Technology ; Kariminia, Hamid Reza (Supervisor)
Abstract
Effective parameters on decolourization of Sumifix Black B or Reactive Black 5 (RB5) by the extracted peroxidase from Coprinus Cinereus NBRC 30628 in a bioreactor have been reviewed in this master thesis. These parameters were such as hydrogen peroxide concentration, pH of dye solution, enzymatic activity and hydraulic retention time. All of these parameters were optimized in such condition that enzyme solution was added to bioreactor at the initial time of reaction. Optimum concentration for hydrogen peroxide, pH, dye concentration, and hydraulic retention time in above mentioned condition of reactor were 96.1 mM, 8, 40 ppm, and 60 min, respectively. It is worth to note that the higher...
Biodecolourization and Biodetoxification of Dye-containing Wastewaters from Textile Dyeing by the Native Fungal Strain Phanerochaete Chrysosporium and Trametes Species
, M.Sc. Thesis Sharif University of Technology ; Borghei, Mehdi (Supervisor) ; Mosavi, Abas (Supervisor) ; Ghobadi Nehad, Zahra (Co-Supervisor)
Abstract
Treatment of Wastewater of textile industries has been always challenging due to the high organic matter which is a suitable substrate for the growth of microorganisms. Also, discharge of wastewater into the open water causes water adsorbing more sunlight, raising water temperature and therefor decreasing dissolved oxygen. In addition, the acidity of wastewater decreases the quality of agricultural soil. Among wastewater treatment methods, biological methods are cheaper, environment friendly, and produce less by product. Among all the microorganism responsible for biological treatment, fungi and enzymes are more applicable. Especially white-rot fungi are the most effective microorganism to...
Complementary treatment of municipal landfill leachate for chemical oxygen demand and color removal, case study: Waste Management Organization of Tehran Municipality
, M.Sc. Thesis Sharif University of Technology ; Raie, Mohammad (Supervisor)
Abstract
Landfill leachate, due to its content of resistant organic and inorganic pollutants, is considered one of the most significant environmental challenges. This study aimed to investigate advanced and complementary treatment methods for removing Chemical Oxygen Demand (COD) and color (at wavelengths of 455 and 465 nm) from treated leachate (subjected to biological and chemical treatment) from the Aradkouh landfill in Tehran. In the first phase, the combined oxidation and coagulation-flocculation process using two ferrate (VI)-based compounds (soluble sodium ferrate (Fersol) and potassium ferrate powder) was evaluated. Results showed that both substances performed best under highly acidic...