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Boğaziçi Üniversitesi Tezleri: Recent submissions

Now showing items 821-840 of 7882

Assessment of molecular size distribution effects on the nonselective oxidation of trace metal humic acid binary system

İlhan, Esra Değirmenci. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2010., 2010.)

The objective of this research to investigate the effects of zinc ions on the nonselective photocatalytic degradation of humic acid in aqueous medium. The photocatalytic oxidation of humic was carried out using TiO2 Degussa ...
Minimization of excess sludge production in the treatment of municipal wastewaters by using membrane bioreactor-ultrasound combined systems

Akyapı, Ayşe. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2010., 2011.)

The treatment and disposal of excess sludge has become the most challenging problem in wastewater treatment plants due to economic, environmental and legislative factors. Therefore, to develop strategies and technologies ...
The effect of disintegration by classical and Advanced Fenton Processes on minimization and characteristics of the wastewater sludges

Kalkan, Emre. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2010., 2010.)

Wastewater treatment facilities using biological treatment processes produce large quantity of sludge that must be disposed of safely. In recent years researches focused on sludge minimization, during wastewater treatment ...
Potential intake and risk characterization of heavy metals due to ingestion of soils from parks, playgrounds and picnic areas

Doğan, Nurten. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2010., 2010.)

The objectives of this study were to assess urban soil contamination by selected metals (As, Cd, Cr, Cu, Ni, Pb, and Zn) in 24 sites (127 soil samples) in Istanbul, Turkey, investigate relationships between soil contamination ...
Removal of antimicrobial compounds from water by gac and natural minerals

Aydın, Derya. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2010., 2010.)

The widespread and unrestricted use of antimicrobials resulted in accumulation of them in the environment and due to their adverse effects they can be considered as an emergent pollutant group. Development of antimicrobial ...
Analysis of Saharan Desert dust transport to the Anatolian Peninsula: a megacity perspective

Akınç, Gül. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2010., 2010.)

Mineral dust is one of the most significant constituent among the air pollutants. Besides its negative effects on human health, it influences the radiation balance of the Earth. The greatest source of mineral dust over the ...
Pretreatment of wastewater sludge by pulsed electric field application at different pH conditions

Hacıosmanoğlu, Gülenay. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2010., 2010.)

Keywords: Waste water sludge; Sludge disintegration; Pulsed electric field; Sludge dewatering; Aerobic digestion|Wastewater treatment processes produce large amounts of sludge to be stabilized and dewatered before safe ...
Biogas production from sugar beet and maize at various total solid contents

Bayır, Zeynep. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2009., 2009.)

Nowadays, energy required in almost all fields of everyday life is provided mostly by expensive imported energy sources in Turkey. In order to meet the increasing demand of energy, it is indispensable to find alternative ...
Climatological trajectory analysis of air pollution from Istanbul to its surroundings

Dede, Bahar. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2009., 2009.)

Megacities’ pollution problems are rising day by day because of population growth, transportation, traffic and industrial activities. Istanbul is one of the largest cities in Europe. Dense population and vehicle traffic, ...
Deretmination of the remaining stabilization potential of landfilled solid waste by sludge addition

Güleç, Şükran Başak. (Thesis (M.S.)- Bogazici University. Institute of Environmental Technology, 1999., 1999.)

Research activities on the innovative landfill management techniques are becoming attractive research areas in the last decades due to increasing amounts of solid waste by increasing industrialization and urbanization. In ...
A dynamic simulation model of carbon circulation and methane feedbacks in anthropogenic climate change

Akpınar, Yeşim Atağ. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2010., 2010.)

The human induced climate change is the most serious and difficult environmental issue to manage that has emerged in the recent decades. The complexity of this problem lies in the fact that if the increase in atmospheric ...
Effect of ultrasound on the enhancement of biodegradability: a study with olive mill wastewaters

Çoker, H. Sertan. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2009., 2009.)

Olive mill wastes are a significant source of potential or existing environmental pollution in the Mediterranean region. The environmental impacts of olive mill wastewaters are considerable with the dangerous effects such ...
Development of water quality index as a sustainability indicator in Küçükçekmece watershed, İstanbul

Taner, Mehmet Ümit. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2007., 2007.)

Küçükçekmece Watershed, located in the European side of Istanbul is a highly deteriorated and polluted region as a result of unplanned urbanization and industrialization. The purpose of this study is to assess the water ...
Treatment of high-solids synthetic domestic wastewater stream with high-rate anaerobic digesters

Aydınkaya, Zeynep. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2009., 2009.)

Anaerobic treatment of domestic wastewater greatly reduces the organic load to water bodies with less energy input while generating renewable energy. This study focuses the performance of two different types of high-rate ...
Mathematical modeling of a biogas recovery system at the İZAYDAŞ, Kocaeli sanitary landfill

Cıngır, Alper. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2004., 2004.)

The purpose of this study is to asses the potential of landfill gas generation and recovery from Lot 7 of the İZAYDAŞ solid waste disposal site in Izmit, Turkey. A multi-step model is developed to evaluate the performance ...
Modeling of SO2 emissions from Yatağan power plant

İm, Ulaş. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2003., 2003.)

The meteorological model, CALMET, and its plume dispersion model, CALPUFF, were used in order to simulate the dispersion of SO2 emitted from Yatağan Power Plant and its effect on Yatağan district in the episodic event on ...
Effects of dual polymer conditioning on sludge dewatering

Koray, Elif Fulya. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2006., 2006.)

The sludge dewatering has been known as one of the most expensive and hard to handle processes in water/wastewater treatment. Alum sludges have been recognized as difficult to dewater due to the containing 40 per cent bound ...
Oxidative treatment of algogenic organic matter

Karakaya, Eylem. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2007., 2007.)

Nowadays, removal of organic substances from natural waters (NOM) is getting greater concern gradually because they form carcinogenic substances (DBP, THM, HAAs, etc.). Consequently, alternative methods have been tried to ...
Effects of ozonation, photocatalystic oxidation, and sequential oxidation on coagulation of humic acids

Şen, Sibel. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2004., 2004.)

In this study, coagulation behavior of untreated and treated humic acids with two different types of metal coagulant and two types of polyelectrolyte as coagulant aid were investigated. The aim of this study was to understand ...
Interactions between azo dyes and selenium in their toxicity to Dunaliella Tertiolecta and Vibrio Fischeri

Özkovalak, Nilüfer. (Thesis (M.S.)-Bogazici University. Institute of Environmental Sciences, 2005., 2005.)

In this study, the interactions between assisting chemicals, dye bath, three azo dyesand selenium in their toxicity to Dunaliella tertiolecta and Vibrio fischeri were determined.Three response parameters, including optical ...

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