Goksin Ozyildiz

• Doctor of Philosophy
• Research Assistant at Istanbul Technical University

In this study, the effect of home-made, reduced graphene oxide (rGO)nanoparticles on persulfate (PS)/UV-C oxidation of bisphenol A (BPA; 8.8 μM), an endocrine disruptor and model micropollutant, in real tertiary treated urban wastewater (TWW)was examined. Experimental results revealed that the presence of rGO induced a significant improvement in th...

The present study investigated the disregarded impact of microbial community composition, diversity and abundance of the starter biomass on lab-scale bioreactor performance, steady-state long time operation, biodegradation outcome and microbial kinetics. Standard lab-scale experiments are usually initiated with inoculum taken from wastewater treatm...

The present study investigated the deviations of operational parameters of a large-scale wastewater treatment plant (WWTP) from design basis through combining dedicated batch experiments with full-scale dynamic modeling results. The long-term process performance of a full-scale biological nutrient removal (BNR) plant equipped with anaerobic sludge...

The biodegradation of raw wastewater for an organized industrial zone has been studied by means of dedicated respirometric and analytical experiments. The experimental results indicated that the investigated industrial wastewater contains mainly the soluble (slowly) hydrolysable fraction of chemical oxygen demand (COD) (58%) while readily biodegrad...

In this study, the effect of anaerobic hydrolysis rate on biogas production was investigated with mesophilic digesters in seven large-scale wastewater treatment plants. A linear correlation was determined between the percentage of primary sludge mass in the total sludge fed to the digester and the overall anaerobic hydrolysis rate. The anaerobic hy...

The study summarizes the necessary revisions for initiating the nitrification process in a full-scale leachate treatment plant that operates in a warm climate including dynamic simulation and kinetic characterization studies that were conducted to determine the nitrification kinetics. Following its commissioning, the process temperature in the plan...

In this study, simulation-based analysis is conducted for nitrogen removal mechanism in a biological nutrient removal plant designed in an encrypted manner. In the first phase, the simulation study elucidates how nitrogen removal occurs in a complex design using a series of 4 carousel bioreactors with additional nitrate recycle. It is demonstrated...

Moving bed biofilm technology is a successful and promising biological treatment process considered for cost-effective management of wastewaters. In this study, a hybrid moving bed biofilm pilot plant was operated and obtained results were compared with simulation results of two biological processes: a conventional Biological Nutrient Removal (BNR)...

BACKGROUND This study investigated the anatomy of organic carbon (as chemical oxygen demand, COD) removal from sewage through chemically assisted settling, by means of particle size distribution (PSD) analysis: it showed which size fractions were affected, aside from the particulate COD. The experiments were conducted on the effluent of the existin...

The increase in the occurrence of the pharmaceuticals in the environmental compartments is becoming emerging concern as it reflects their inefficient treatment in the wastewater treatment plants which are the main sources of these micropollutants. Non-steroidal anti-inflammatory drugs (NSAIDs) are one of the most commonly prescribed and frequently...

Food industry wastewater (FIWW) streams with high organic content are among the most suitable and inexpensive candidates for polyhydroxyalkanoate (PHA) biopolymer production. Due to its high organic acid content, pickle industry wastewater (PIWW), can be considered as one of the prospective alternative for PHA production. In this context, this stud...

Two lab scale sequencing batch reactors (SBRs) initiated with different seed biomass obtained from two different municipal wastewater treatment plants in order to compare the effect of initial seed sludge composition on the treatment performance. The overgrowth of filamentous microorganisms was observed in SBR-1 after 70 days of operation resulted...

In this study, an integrated aerobic membrane bioreactor (MBR)-nanofiltration (NF) system has been applied for advanced treatment of Opium processing wastewaters to comply with strict discharge limits. Aerobic MBR treatment was successfully applied to high strength industrial wastewater. In aerobic MBR treatment, a non-fouling unique slot aeration...

Gelişen teknolojiyle birlikte insanoğlu daha büyüğü, daha yükseği, daha karmaşığı hedeflemekte ve bunun sonucunda inşaat projeleri daha kapsamlı bir hal almaktadır. İmalatlar ve yapılacak iş kalemi sayısı artmaktadır. Buna bağlı olarak, maliyet tahmininde en çok kullanılan maliyet tahmin metodu olan keşif yöntemi (birim fiyat yöntemi), artan poz sa...