Dedicated and accomplished Environmental Engineering professional with a Ph.D. in Environmental
Engineering & Science from Clemson University and a strong focus on Biological Process Engineering. I
bring over 25 years of pedagogical expertise, having served as a Professor at Yildiz Technical University
and as Rector and Professor at the International University of Sarajevo. My research endeavors include
serving as Project Coordinator for various investigations, such as the treatment of innovative technologies
in dye-containing wastewater and the biodegradation of aromatic compounds under mixed electron
acceptor conditions. I have published extensively in prestigious journals and am well-versed in areas like
membrane bioreactors, biodegradation of emerging pharmaceuticals, and treatment of textile industry
wastewater. My career statement reflects a commitment to sustainable development, green energy, and
environmental engineering. I have a proven track record as a Co-Principal Investiga
EDUCATION
MSc, Environmental Engineering and Science, 3.88
Clemson University, Clemson, SC, USA
August 1994 - May 2002
PhD, Environmental Engineering and Science, 3.90
Clemson University, Clemson, SC, USA
August 1996 - May 2002
42
Scopus Publications
2650
Scholar Citations
22
Scholar h-index
40
Scholar i10-index
Scopus Publications
Regional variations in incidence of surgical site infection and associated risk factors in women undergoing cesarean section: A systematic review and Meta-Analysis Nazmul Islam, Lukman Thalib, Sadia Mahmood, Sameed Akif Varol, Ibrahim Adel, Abdelrahman Aqel, Fatemeh Atashbari, Ozer Cinar Intensive and Critical Care Nursing, 2025 BACKGROUND: Surgical site infections (SSIs) are the most common postoperative complications after cesarean section (CS), with increased mortality, prolonged hospital stays, and increased healthcare costs. OBJECTIVE: To systematically estimate the global incidence and identify the risk factors associated with SSI, focusing on the variation between high- and low-income countries. SEARCH STRATEGY AND SELECTION CRITERIA: Observational studies reporting on the incidence of SSI after CS were systematically searched in PubMed, Embase and SCOPUS. DATA COLLECTION AND ANALYSIS: Multiple authors independently screened, extracted the data, and assessed therisk of bias. The primary outcome was the incidence of SSI within 30 days. Subgroup and sensitivity analyses and meta-regression examined SSI-related heterogeneity. MAIN RESULTS: 49 cohort studies with 271,954 participants met the inclusion criteria. We found with moderate certainty that the overall SSI incidence in CS patients was 7.0 % (95 % CI: 6.0 %-8.0 %). The SSI incidence in LMICs was 8.0 % (95 % CI: 6.0 %-10.0 %) with moderate certainty, while the incidence in HICs was 5.0 % (95 % CI: 4.0 %-7.0 %) with low certainty. Subgroup analysis indicated a significantly higher incidence in Africa and the Western Pacific. Meta-regression showed a significant decrease in SSI incidence in HICs. Maternal factors, procedural aspects, and care quality were associated with SSI. CONCLUSIONS: Our findings offer valuable insights into the global incidence of SSIs following CS and provide a reliable estimate for benchmarking and quality improvement. This study adds to the evidence on SSI determinants and highlights the need for targeted preventative measures across various regional and healthcare settings. IMPLICATIONS FOR CLINICAL PRACTICE: Higher SSI rates in LMICs call for targeted infection prevention strategies, including improved preoperative preparation, antibiotic prophylaxis, and enhanced antenatal care services. In HICs, addressing lifestyle factors, managing comorbidities, and refining surgical protocols can further mitigate risks, emphasizing the need for region-specific, evidence-based interventions.
Biodegradation of emerging pharmaceuticals from domestic wastewater by membrane bioreactor: The effect of solid retention time Raghad Asad Kadhim ALOBAIDI, Kubra ULUCAN-ALTUNTAS, Rasha Khalid Sabri MHEMID, Neslihan MANAV-DEMIR, Ozer CINAR International Journal of Environmental Research and Public Health, 2021 Although conventional biological treatment plants can remove basic pollutants, they are ineffective at removing recalcitrant pollutants. Membrane bioreactors contain promising technology and have the advantages of better effluent quality and lower sludge production compared to those of conventional biological treatment processes. In this study, the removal of pharmaceutical compounds by membrane bioreactors under different solid retention times (SRTs) was investigated. To study the effect of SRT on the removal of emerging pharmaceuticals, the levels of pharmaceuticals were measured over 96 days for the following retention times: 20, 30, and 40-day SRT. It was found that the 40-day SRT had the optimum performance in terms of the pharmaceuticals’ elimination. The removal efficiencies of the chemical oxygen demand (COD) for each selected SRT were higher than 96% at steady-state conditions. The highest degradation efficiency was observed for paracetamol. Paracetamol was the most removed compound followed by ranitidine, atenolol, bezafibrate, diclofenac, and carbamazepine. The microbial community at the phylum level was also analyzed to understand the biodegradability of pharmaceuticals. It was noticed that the Proteobacteria phylum increased from 46.8% to 60.0% after 96 days with the pharmaceuticals. The Actinobacteria class, which can metabolize paracetamol, carbamazepine, and atenolol, was also increased from 9.1% to 17.9% after adding pharmaceuticals. The by-products of diclofenac, bezafibrate, and carbamazepine were observed in the effluent samples.
Various oxygen loadings for oxidation of methane as electron donor source in membrane biofilm reactor for wastewater treatment Dilek Akman, Kevser Cirik, Ozer Cinar, Ilker Akman 2015 IEEE 15th International Conference on Environment and Electrical Engineering Eeeic 2015 Conference Proceedings, 2015 The aim of this study is to investigate the aerobic methane oxidation (AME), a process potentially useful for wastewaters treatment using methane as external electron donor in membrane biofilm reactor (MBfR). MBfR was operated at different O2:CH4 ratios (0.25-1) to provide optimum reactor conditions for denitrification which will be held in subsequent studies. According to our results, none of the dissolved organic metabolites or methanol was detected by analytical techniques during methane oxidation studies. However, study findings played a key role in selecting the suitable environmental conditions for denitrification. The O2:CH4 ratio of 0.35 was found optimum reactor conditions providing safety gas mixtures and non-methane containing gas outlet hence without methane losses to the atmosphere.
Biocathode application in microbial fuel cells: Organic matter removal and denitrification Abdullah Kizilet, Dilek Akman, Vildan Akgul, Kevser Cirik, Ozer Cinar 2015 IEEE 15th International Conference on Environment and Electrical Engineering Eeeic 2015 Conference Proceedings, 2015 The aim of this study is to investigate bioelectricity generation using a dual chambered biocathode microbial fuel cell (MFC). In this study, the effect of cathode influent nitrate concentration was investigated on power generation and wastewater treatment performance. Acetate was used as readily biodegradable carbon and electron donor source for microorganisms into anodic chamber, corresponding to 1000 mg/L influent COD. The biocathode MFC performance was evaluated for around 75 days following 360 days microorganism adaptation period. COD removal efficiency was 75% and slightly affected from the varying influent nitrate concentrations. However, autotrophic denitrification efficiency was adversely affected by increasing influent nitrate concentration and the maximum nitrate removal efficiency of around 70% was observed at the influent nitrate concentration of 50 mgNO-3/L. Additionally, the increasing nitrate concentration from 25 to 50 mg/L resulted in increasing the power density which approached to around 4 W/m2.
Investigation of color removal from real textile wastewaters in ABR followed by ozonation as post treatment Research Journal of Chemistry and Environment, 2014
Selection of optimum operational conditions for the treatment performance of geotextile biofilters using artificial neural networks Fresenius Environmental Bulletin, 2010
Artificial neural network and regression techniques in modelling surface water quality Environment Protection Engineering, 2010
Regional variations in incidence of surgical site infection and associated risk factors in women undergoing cesarean section: A systematic review and Meta-Analysis N Islam, L Thalib, S Mahmood, SA Varol, I Adel, A Aqel, F Atashbari, ... Intensive and Critical Care Nursing 89, 103951 , 2025 2025 Citations: 20
Regional variations in incidence of surgical site infection and associated risk factors in women undergoing cesarean section: A systematic review and Meta-Analysis I Nazmul, L Thalib, S Mahmood, SA Varol, I Adel, A Aqel, F Atashbari, ... Elsevier , 2025 2025
Cake layer reformation rates on self forming dynamic membranes and performance comparison with microfiltration membranes A Kizilet, A Yurtsever, K Cirik, O Cinar Science of The Total Environment 838, 156384 , 2022 2022 Citations: 10
Biodegradation of emerging pharmaceuticals from domestic wastewater by membrane bioreactor: the effect of solid retention time RAK Alobaidi, K Ulucan-Altuntas, RKS Mhemid, N Manav-Demir, O Cinar International Journal of Environmental Research and Public Health 18 (7), 3395 , 2021 2021 Citations: 30
Membrane bioreactor and dynamic membrane bioreactor performance comparison under the same conditions MA Veral, Ö Çınar, A Kızılet Avrupa Bilim ve Teknoloji Dergisi, 30-41 , 2020 2020 Citations: 4
Membran Biyoreaktör ve Dinamik Membran Biyoreaktör Performansının Aynı Koşullarda Kıyaslanması MA Veral, A Kızılet, Ö Çınar European Journal of Science and Technology, 30-41 , 2020 2020 Citations: 2
Performance and foulant characteristics of an anaerobic membrane bioreactor treating real textile wastewater A Yurtsever, E Sahinkaya, Ö Çınar Journal of Water Process Engineering 33, 101088 , 2020 2020 Citations: 75
Recent advances in membrane fouling control in wastewater treatment processes A Cemanovic, N Manav, A Kızılet, Ö Çınar European Journal of Engineering and Natural Sciences 3 (2), 173-179 , 2019 2019 Citations: 4
Sulfur-Based Mixotrophic Denitrification Process for Drinking Water Treatment and Community Fingerprinting A Öztürk, E Şahinkaya, Ö Çınar International Symposium on Urban Water and Wastewater Management, 25-27 , 2018 2018 Citations: 2
Treatment of industrial wastewaters with anaerobic membrane bioreactors A Ćemanović, OA Arikan, A Kizilet, Ö Çınar Proceedings of the 4th international conference on engineering and natural … , 2018 2018 Citations: 5
Treatment of textile industry wastewater using dynamic membrane bioreactor: impact of intermittent aeration on process performance E Sahinkaya, A Yurtsever, Ö Çınar Separation and Purification Technology 174, 445-454 , 2017 2017 Citations: 105
Comparison of Performance of Conventional Membrane Bioreactor with Dynamic Membrane Bioreactor MA Veral European Journal of Engineering and Natural Sciences 2 (1), 21-28 , 2017 2017 Citations: 1
The use of membrane processes to promote sustainable environmental protection practices A Kızılet European Journal of Sustainable Development Research 2 (1), 17-22 , 2017 2017 Citations: 10
Isotherm and kinetic modelling of azo dyes adsorption O Isık European Journal of Engineering and Natural Sciences 2 (1), 210-216 , 2017 2017 Citations: 8
Treatment of textile industry wastewater using dynamic membrane bioreactor: Impact of intermittent aeration on process performance A Yurtsever, E Şahinkaya, Ö Çınar 2017
Treatment of textile wastewater using sequential sulfate-reducing anaerobic and sulfide-oxidizing aerobic membrane bioreactors A Yurtsever, Ö Çınar, E Sahinkaya Journal of Membrane Science 511, 228-237 , 2016 2016 Citations: 100
A review on dynamic membrane bioreactors: comparison of membrane bioreactors and different support materials, transmembrane pressure O Cinar, A Kizilet, O Isik, A Cemanovic, MA Veral, S Duman Proceedings of International Conference on Engineering and Natural Sciences … , 2016 2016 Citations: 12
Peyniraltı Suyu Arıtımında Tek ve Çift Aşamalı Anaerobik Reaktörün Optimizasyonu E YAZAR, K CIRIK, Ş ÖZDEMIR, D AKMAN, Y CUCİ, Ö ÇINAR 2016
Optimization of two-stage and single-stage anaerobic reactors treating cheese whey E Yazar, K Cırık, Ş Özdemır, D Akman, Y Cuci, Ö Çınar Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi 19 (1 … , 2016 2016 Citations: 3
Effect of NaCl concentration on the performance of sequential anaerobic and aerobic membrane bioreactors treating textile wastewater A Yurtsever, B Calimlioglu, M Görür, Ö Çınar, E Sahinkaya Chemical Engineering Journal 287, 456-465 , 2016 2016 Citations: 73
MOST CITED SCHOLAR PUBLICATIONS
Comparison of artificial neural network and regression pedotransfer functions for prediction of soil water retention and saturated hydraulic conductivity H Merdun, Ö Çınar, R Meral, M Apan Soil and Tillage Research 90 (1-2), 108-116 , 2006 2006 Citations: 304
Simultaneous heterotrophic and sulfur-oxidizing autotrophic denitrification process for drinking water treatment: control of sulfate production E Sahinkaya, N Dursun, A Kilic, S Demirel, S Uyanik, O Cinar Water research 45 (20), 6661-6667 , 2011 2011 Citations: 260
Stripping/flocculation/membrane bioreactor/reverse osmosis treatment of municipal landfill leachate H Hasar, SA Unsal, U Ipek, S Karatas, O Cınar, C Yaman, C Kınacı Journal of Hazardous Materials 171 (1-3), 309-317 , 2009 2009 Citations: 217
Performances of anaerobic and aerobic membrane bioreactors for the treatment of synthetic textile wastewater A Yurtsever, E Sahinkaya, Ö Aktaş, D Uçar, Ö Çınar, Z Wang Bioresource Technology 192, 564-573 , 2015 2015 Citations: 174
Effect of cycle time on biodegradation of azo dye in sequencing batch reactor Ö Çınar, S Yaşar, M Kertmen, K Demiröz, NÖ Yigit, M Kitis Process Safety and Environmental Protection 86 (6), 455-460 , 2008 2008 Citations: 122
Treatment of azo dye-containing synthetic textile dye effluent using sulfidogenic anaerobic baffled reactor S Ozdemir, K Cirik, D Akman, E Sahinkaya, O Cinar Bioresource technology 146, 135-143 , 2013 2013 Citations: 114
Modeling of submerged membrane bioreactor treating cheese whey wastewater by artificial neural network Ö Çinar, H Hasar, C Kinaci Journal of biotechnology 123 (2), 204-209 , 2006 2006 Citations: 110
Treatment of textile industry wastewater using dynamic membrane bioreactor: impact of intermittent aeration on process performance E Sahinkaya, A Yurtsever, Ö Çınar Separation and Purification Technology 174, 445-454 , 2017 2017 Citations: 105
Bioelectricity generation in continuously-fed microbial fuel cell: effects of anode electrode material and hydraulic retention time D Akman, K Cirik, S Ozdemir, B Ozkaya, O Cinar Bioresource technology 149, 459-464 , 2013 2013 Citations: 104
Treatment of textile wastewater using sequential sulfate-reducing anaerobic and sulfide-oxidizing aerobic membrane bioreactors A Yurtsever, Ö Çınar, E Sahinkaya Journal of Membrane Science 511, 228-237 , 2016 2016 Citations: 100
Evaluation of IAWQ Activated Sludge Model No. 2 using steady‐state data from four full‐scale wastewater treatment plants Ö Çinar, GT Daigger, SP Graef Water environment research 70 (6), 1216-1224 , 1998 1998 Citations: 92
New tool for evaluation of performance of wastewater treatment plant: artificial neural network Ö Çinar Process Biochemistry 40 (9), 2980-2984 , 2005 2005 Citations: 82
Performance and foulant characteristics of an anaerobic membrane bioreactor treating real textile wastewater A Yurtsever, E Sahinkaya, Ö Çınar Journal of Water Process Engineering 33, 101088 , 2020 2020 Citations: 75
Effect of NaCl concentration on the performance of sequential anaerobic and aerobic membrane bioreactors treating textile wastewater A Yurtsever, B Calimlioglu, M Görür, Ö Çınar, E Sahinkaya Chemical Engineering Journal 287, 456-465 , 2016 2016 Citations: 73
Effect of electron donor source on the treatment of Cr (VI)-containing textile wastewater using sulfate-reducing fluidized bed reactors (FBRs) K Cirik, N Dursun, E Sahinkaya, Ö Çinar Bioresource technology 133, 414-420 , 2013 2013 Citations: 67
Çevre kirliliği ve kontrolü Ö Çınar Nobel Yayın Dağıtım , 2008 2008 Citations: 50
The effect of cyclic anaerobic–aerobic conditions on biodegradation of azo dyes S Yaşar, K Cirik, Ö Çinar Bioprocess and biosystems engineering 35 (3), 449-457 , 2012 2012 Citations: 37
Application of an unsupervised artificial neural network technique to multivariant surface water quality data Ö Çinar, H Merdun Ecological Research 24 (1), 163-173 , 2009 2009 Citations: 37
Biodegradation of emerging pharmaceuticals from domestic wastewater by membrane bioreactor: the effect of solid retention time RAK Alobaidi, K Ulucan-Altuntas, RKS Mhemid, N Manav-Demir, O Cinar International Journal of Environmental Research and Public Health 18 (7), 3395 , 2021 2021 Citations: 30
Kinetics of autotrophic denitrification process and the impact of sulphur/limestone ratio on the process performance A Kilic, E Sahinkaya, O Cinar Environmental technology 35 (22), 2796-2804 , 2014 2014 Citations: 28