Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2026Investigation of heavy metal accumulation in Typha latifolia exposed to mine drainage waters
Tatar, Sule; Okuduci, Ebru
In this study, the accumulation of some heavy metals in water, sediment, and Typha latifolia plant species was investigated in a previously operated mining area located in the Hozat region of Tunceli. In the first phase of the study, water and soil samples were collected from sites where T. latifolia was dominant. The metal uptake capacities from soil to roots, stems, and leaves of the plants were examined for different metals as silver (Ag), barium (Ba), cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb), strontium (Sr), zinc (Zn). Water, sediment, and plant samples collected from the field were analyzed for the above elements at ultra-low detection limits using ICP-MS at ACME Analytical Laboratories in Canada. Bioconcentration factors (BCF-R, BCF-S, BCF-L, respectively) for the root, stem, leaf, and translocation factor (TF) values were calculated. The highest TF value was found to be 0.85 for Sr. The highest bioconcentration factors in the root, stem, and leaves of the plant were also found to be 3.67, 1.55, and 1.79 for Sr, respectively. According to the results obtained, T. latifolia was found to be a suitable plant for the bioaccumulation of Cd, Pb, Cu, and Sr under the existing environmental conditions, but not a suitable bioaccumulator for Ag, Ba, Ni, and Zn. Based on the results, it was determined that some heavy metal pollutants can be remediated using certain plants, and that these plants can function as bioaccumulators for these metals.
- MakaleAçık Erişim2021Gadolinyumun Tatlı Su Omurgasızı Dreissena polymorpha Üzerindeki Biyokimyasal Etkileri
Serdar, Osman; Yildirim, Nuran Cikcikoglu; Yildirim, Numan; Tatar, Sule
Bu çalışma, metabolik ve oksidatif stres biyobelirteçlerinin analizi yoluyla, su kirliliğinin iyi bir biyoindikatörü olarak kabul edilen tatlı su omurgasızı Dreissena polymorpha üzerindeki Gadolinyum (Gd) toksisitesini değerlendirmeyi amaçlamaktadır. Öncelikle çalışmamızda Gd’nin D. polymorpha üzerindeki LC50 değeri belirlenmiştir. D. polymorpha, kontrollü koşullar altında 24 ve 96 saatlik bir süre boyunca üç letal olmayan Gd konsantrasyonuna (1/20, 1/10 ve 1/5 LC50 değerine) maruz bırakılmıştır. TBARS ve CYP1A1 seviyeleri ELISA kiti kullanılarak belirlenmiştir. CYP1A1 ve TBARS düzeylerinin tüm gruplarda 24. ve 96. saatte kontrol grubuna göre arttığı görülmüştür. Bu sonuçlar, Gd'nin tatlı su omurgasızları, D. polymorpha için bir risk olarak kabul edilebileceğini ve bu nedenle alıcı ortamlara deşarjının denetlenmesi gerektiğini göstermektedir.
AtıfOpenAlex8TR Dizin4
İncele - MakaleYalnız künye2021Scopus SJRQ2The assessment of basic blue 41 textile dye decolorisation using the Fenton process: response surface methodology optimisation and toxicity evaluation
Tanyol, Mehtap; Cikcikoglu Yildirim, Nuran; Tatar, Sule; Serdar, Osman; Yildirim, Numan
The biochemical biomarkers (Catalase (CAT), glutathione s-transferase (GST), cytochrome P4501A1 (CYP1A1450) activities and glutathione (GSH), malondialdehyde (MDA) levels) of D. polymorpha exposed to the basic blue 41 (BB41) solutions for 24 and 96 h before and after the Fenton process (FTP) were evaluated to investigate the efficiency of the FTP. The optimum conditions for the removal of BB41 were set using central composite design (CCD), which is a response surface methodology (RSM) module in the Design-Expert® software. The optimal conditions were found to be 27.87 min, 3.49 mg/L, and 0.04 for reaction time, initial BB41 concentration, and Fe2+/H2O2 molar ratio, respectively, resulting in maximum (99%) removal efficiency. After FTP, the MDA and GSH levels decreased significantly during the 24 and 96 h. CAT activities were increased after treatment. No statistically significant changes were observed in the CYP1A1 levels after FTP. GST activities decreased during 24 h but increased during 96 h after FTP. CYP1A1450, catalase, GST activities and MDA, GSH levels of D. polymorpha are useful biomarkers to evaluate the efficiency of FTP. This study suggests that BB41 dye must be further treated after the FTP to minimise the ecotoxicological risk.
AtıfScopus8WoS6OpenAlex8
İncele - MakaleAçık Erişim2020Kızıltepe İleri Biyolojik Atıksu Arıtma Tesisi’nin KOİ, BOİ₅ ve AKMYönünden İşletme Verimliliğinin Değerlendirilmesi
Tatar, Sule; Sağlam, Mehmet Nedim
Son yıllarda kentleşme oranının artmasıyla evsel nitelikli atıksular, çevre kirliliğinin ortaya çıkmasında rol oynayan önemli sebeplerden biri haline gelmiştir. Kentsel atıksu arıtma tesisleri bu kirliliği engellemek için yapılmış olan, evsel nitelikli atıksularınaktarılacağı alıcı ortama varmadan önce zararlı etkilerini engelleyen veya olabilecek en düşük seviyeye indiren tesislerdir. Buçalışmada Kızıltepe Biyolojik Atıksu Arıtma Tesisi’nde 8 ay boyunca günlük tesis giriş ve çıkışından alınan 24 saatlik kompozitnumuneler ile KOİ, BOİ5 ve AKM parametreleri analiz edilmiş ve tesis verimliliği gözlemlenmiştir. Buna göre tesis; %93 KOİ, %93BOİ5 ve %94 AKM giderimi ile çalışmaktadır. Mardin Su ve Kanalizasyon İdaresi Genel Müdürlüğü kontrolündeki Kızıltepe İleriBiyolojik Atıksu Arıtma Tesisi, Kentsel Atıksu Arıtma Yönetmeliği deşarj limitlerine göre değerlendirilmiştir.
AtıfOpenAlex2TR Dizin2İncele - MakaleYalnız künye2020Scopus SJRQ2Can Toxicities Induced by Insecticide Methomyl be Remediated Via Soil Bacteria Ochrobactrum thiophenivorans and Sphingomonas melonis?
Tatar, Sule; Yildirim, Nuran Cikcikoglu; Serdar, Osman; Erguven, Gokhan Onder
The research study was about revealing the biochemical response of Gammarus pulex related to insecticide methomyl before and after bioremediation by two soil bacteria species, Ochrobactrum thiophenivorans and Sphingomonas melonis. Catalase (CAT), glutathione S-transferase.(GST), cytochrome. P4501A1 (CYP1A1) activities in G. Pulex related to methomyl solution were investigated in 24 h and 96 h. ELISA method was used for test studies. CAT enzyme was decreased in Gammarus pulex that was exposed to methomyl after all exposure period (P < 0.05). CAT activities were returned to control results after bioremediation assays. GST enzyme activity was decreased depending on methomyl exposure during 24 h but increased during 4 days (P < 0.05). After 8 days of bioremediation period, GST activity increased again during 24 h while decreased during 4 days (P < 0.05). CYP1A1 activity increased in Gammarus pulex that was exposed to methomyl after all exposure period (P > 0.05). After bioremediation, statistically significant changes were not revealed in CYP1A1 activities (P > 0.05). According to the results of our study, CYP1A1, CAT, and GST activities in G. pulex sanctioned the capability of Ochrobactrum thiophenivorans and Sphingomonas melonis in methomyl bioremediation. Isolated and enriched Ochrobactrum thiophenivorans and Sphingomonas melonis that were added to 2.5 ppb concentrations of methomyl for 8 days. Each day, chemical oxygen demand (COD) and biochemical oxygen demand (BOD5), pH and dissolved oxygen parameters were monitored. At the final phase of the bioremediation step, it was determined that these bacteria have efficient methomyl bioremediation properties in a mixed corsortia at a rate of 86%. These results show that these bacteria can be used for bioremediate the receiving environments that are polluted by these kinds of insecticides.
AtıfScopus18WoS16OpenAlex19
İncele - MakaleYalnız künye2019Changes in Antioxidant and Detoxification Systems of the Freshwater Amphipod Gammarus pulex Exposed to Congo Red
Serdar, Osman; Tatar, Sule; Cıkcıkoğlu Yıldırım, Nuran
In this study, it is aimed to investigate the changes in glutathione S-transferase and cytochrome 1A1 enzymes with malondialdehyde levels in Gammarus pulex exposed to congo red. G. pulex was exposed to synthetic solutions containing 20, 10, 5 mg/L of congo red during 96 hours. Glutathione S-transferase and cytochrome 1A1 enzyme activities were determined by using ELISA kit, malondialdehyde levels were determined spectrophotometrically. Glutathione S-transferase activities groups increased in all application groups during 24 and 96 hours compared to control (P<0.05). After exposure to congo red, cytochrome 1A1 activity was decreased during 24 and 96 hours in all application groups compared to control groups (P<0.05). Malondialdehyde levels increased in all groups after congo red exposure compared to control during 24 hours (P<0.05), after 96 hours increased in group A, decreased in groups B and C (P<0.05). Our results show that congo red may cause oxidative stress by producing reactive oxygen species. In conclusion, changes in antioxidant enzymes and malondialdehyde levels suggest that congo red can be used as potential sensitive biomarkers in the assessment of environmental toxicity.
AtıfTR Dizin3İncele - MakaleYalnız künye2019Antioxidant Enzyme Responses to Lead Exposure of Gammarus pulex
Serdar, Osman; Yildirim, Numan; Tatar, Sule; Cıkcıkoğlu Yıldırım, Nuran
It is aimed to investigate the activity response of the antioxidant enzymes superoxide dismutase, catalase and glutathione peroxidase of G. pulex exposed to lead. The G. pulex was exposed synthetic solutions containing 10, 30, 50 µg/L lead for 96 h. Superoxide dismutase, catalase, glutathione peroxidase activities were determined by using ELISA kit. The differences in superoxide dismutase activities were statistically insignificant (P>0.05). Catalase decreased in all treatment groups after lead exposure (P<0.05). The glutathione peroxidase activities were decreased depending on lead exposure (P>0.05). Our findings suggest that lead can induce oxidative stress by generating reactive oxygen species and inhibiting sulfhydryl dependent antioxidant enzymes activities. In conclusion, alterations in antioxidant enzymes may potentially be used as sensitive biomarkers for risk assessment of lead in the environment and may contribute to the establishment of discharge regulations.
AtıfTR Dizin1İncele - MakaleYalnız künye2019Scopus SJRQ2Phanerochaete chrysosporium as a model organism to assess the toxicity of municipal landfill leachate from Elazığ, Turkey
Yildirim, Numan; Yildirim, Nuran Cikcikoglu; Tatar, Sule; Alp, Hevidar
In order to evaluate the potential ecological risk and the toxic effect of landfill leachate (LL), Phanerochaete chrysosporium was exposed to LL and their biochemical response was observed by using antioxidant parameters. Phanerochaete chrysosporium, ME 446, was kept at 4 °C after being sub-cultured at 28 °C on Sabouraud Dextrose Agar (SDA). Superoxide dismutase (SOD), catalase (CAT) activities, and malaondialdehyde (MDA) and glutathione (GSH) levels of P. chrysosporium exposed to different dilution rates of leachate (1/10 and 1/20) for 24 and 96 h were analyzed by using the ELISA method. The physiochemical parameters such as pH, conductivity, total dissolved solids (TDS), dissolved oxygen (DO), chemical oxygen demand (COD) of leachate, and reference water were analyzed by using the YSI Professional Plus handheld multiparameter meter. In this study, SOD activities were decreased in the application groups compared with the Control Group at the 24th and 96th hours. CAT activities and GSH levels increased in the application groups compared with the Control Group at the 24th hour but decreased at the 96th hours. MDA levels increased in all of the application groups when compared with the Control Group for both 24 and 96 h. Different concentration of LL induces oxidative stress in P. chrysosporium, increased CAT activity and MDA levels, and decreased SOD activity and GSH levels.
AtıfScopus7WoS5OpenAlex6İncele - MakaleYalnız künye2018Scopus SJRQ1Antioxidant biomarkers in Gammarus pulex to evaluate the efficiency of electrocoagulation process in landfill leachate treatment
Serdar, Osman; Yildirim, Nuran Cikcikoglu; Tatar, Sule; Yildirim, Numan; Ogedey, Aysenur
The discharge of landfill leachate into the environment without effective treatment poses a serious threat for the aquatic ecosystems. This present study was undertaken to evaluate whether electrocoagulation process is efficient for treatment landfill leachate (LL) or not by using antioxidant biomarkers in Gammarus pulex. Glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and catalase (CAT) activities and malondialdehyde (MDA) and glutathione (GSH) levels in G. pulex exposed to untreated, treated, and diluted rates 1/10 and 1/20 in both LL during 24 and 96 h were tested. Physiochemical characteristics of leachate (chemical oxygen demand, electrical conductivity, pH, phosphate, turbidity, NH3, Cl−, and color) were determined pre and post treatment. All physiochemical characteristics of LL decreased after treatment process. GSH-Px and CAT activities and GSH and MDA levels were increased in untreated groups when compared to control (p < 0.05). After treatment by electrocoagulation, MDA and GSH levels and CAT activities were returned to control values. In conclusion, the abilities of LL to stimulate oxidative stress in G. pulex have been proven. The results revealed that antioxidant parameters are useful biomarkers for determining the treatment efficiency of the electrocoagulation process.
AtıfScopus19WoS17OpenAlex23İncele - MakaleYalnız künye2018Scopus SJRQ2The using of Gammarus pulex as a biomonitor in ecological risk assessment of secondary effluent from municipal wastewater treatment plant in Tunceli, Turkey
Tatar, Sule; Cikcikoglu Yildirim, Nuran; Serdar, Osman; Yildirim, Numan; Ogedey, Aysenur
The objectives of this research are the assessment of secondary effluents (SEs) quality by evaluating chemical parameters and biomarkers. For this purpose, MDA and GSH levels were determined by spectrofotometer. SOD, CAT, and GPX activities were determined by using ELISA kit in the groups of control and the groups exposed to SE. The level of MDA and the activities of SOD in Gammarus pulex vary depending on the exposure time. GSH levels and GSH-PX activities increased in G. pulex exposed to the effluent compared to the control during 24 h and 96 h. CAT activities were in SE group were found lower than the control in G. pulex during 24 h and 96 h. Current experimental results show that SOD, CAT, GPX activities, and GSH and MDA levels in G. pulex are sensitive and appropriate responses for assess the effects of anthropogenic contaminants on the aquatic ecosystems, particularly effluent complex mixtures.
AtıfScopus19WoS19OpenAlex22İncele - MakaleYalnız künye2018Scopus SJRQ1Biochemical responses of Gammarus pulex to malachite green solutions decolorized by Coriolus versicolor as a biosorbent under batch adsorption conditions optimized with response surface methodology
Yildirim, Nuran Cikcikoglu; Tanyol, Mehtap; Yildirim, Numan; Serdar, Osman; Tatar, Sule
The current study was aimed to investigate the detoxifying and antioxidant enzyme response of Gammarus pulex exposed to malachite green (MG) after decolorization by Coriolus versicolor. Response surface methodology (RSM) was utilized to optimize the decolorization conditions of MG synthetic solutions by C. versicolor. Glutathione (GSH), malondialdehyde (MDA) levels and glutathione peroxidase (GPX), catalase (CAT), superoxide dismutase (SOD), glutathione S-transferase (GST), cytochrome P450 1A1 (CYP1A1) activities in G. pulex exposed to undecolorized (A1) and decolorized (A2) MG synthetic solution during 24 and 96 h were tested by using ELISA method. SOD and GPX enzyme activity was increased after decolorization (p > 0.05). CAT enzyme activity was increased in A2 group during 24 h (p > 0.05) but decreased during 96 h (p < 0.05). GSH levels were increased in A2 group during 24 and 96 h (p < 0.05). GST, CYP1A1 enzyme activity and MDA levels were decreased after decolorization during 96 h (p < 0.05). In this study, GSH levels, CAT, GST and CYP1A1 activities in G. pulex approved the capability of C. versicolor in MG decolorization, optimized with RSM.
AtıfScopus28WoS24OpenAlex31İncele