Sürdürülebilir Kalkınma Amaçları

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• MakaleYalnız künye2021Scopus SJRQ1/r/munzur/2774
  Using Ochrobactrum thiophenivorans and Sphingomonas melonis for bioremediation of Imidacloprid

  Erguven, Gokhan Onder; Demirci, Ulas

  To solve the environmental problems of the pesticides, bioremediation methods are commonly useful for their environment friendly properties. These methods are more cheap, useful and have more advantages for remediate receiving environments In this study, imidacloprid which is one of the selective insecticide in all over the world is chosenfor bioremediation studies with two soil bacteria. The imidacloprid used in the Mediterranean climate for cotton, pistachios, tomatoes, peppers and eggplant cultivation. The bioremediation of this insecticide was investigated via the performance of O.thiophenivorans and S. melonis in agitated culture media. The agricultural soil used for the isolation of these two bacteria was taken from the cotton cultivated agricultural area in Adana province in Turkey. For this purpose, the isolated and enriched bacteria were added to the recommended insecticide concentrations, and the Imidacloprid active material, Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD5), Total Organic Carbon (TOC), pH and dissolved oxygen (DO) parameters were determined for two weeks on each day of the study. O. thiophenivorens and S. melonis bioremediate the Imidacloprid insecticide with high efficiency (over 90%). According to these results, it is understood that these bacteria can be preferred in the bioremediation of receiving environments that are contaminated with such pesticides and can be useful for scientists to handle the opposite effects of such persistent organic pollutants and COD, BOD5 and TOC parameters can easily give opinions about decreasing of pesticides like the active materials

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  AtıfScopus28·WoS27·OpenAlex30

  İncele
• MakaleAçık Erişim2020Scopus SJRQ2/r/munzur/3555
  Statistical evaluation of the bioremediation performance of Ochrobactrum thiophenivorans and Sphingomonas melonis bacteria on Imidacloprid insecticide in artificial agricultural field

  Onder Erguven, Gokhan; Demirci, Ulas

  Background: Pesticides are applied directly on the soil or on the vegetation, and thus, they can reach the receiving environment easily. In this way, environmental damage that stems from pesticides also affects public health and the natural habitat. Pesticides are one of the most harmful pollutant groups in terms of human health, fauna and the environment. They penetrate the application field and the applicator right after the application and start to show adverse effects. Methods: The bioremediation of the Imidacloprid (C9H10ClN5O2) insecticide, which is used commonly in Mediterranean climate, was compared with some soil bacteria in artificially prepared fields. For this purpose, firstly, it was determined whether the soil samples taken from a field where cotton was cultivated in Adana in Turkey was suitable for bioremediation. Then, the bacteria were isolated from these soils with the 16sRNA method. The enhanced microbial consortia of these isolated bacteria were inoculated to the artificial fields, meanwhile, the recommended concentrations of Imidacloprid were added to these agricultural fields. Imidacloprid, Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD5) and Total Organic Carbon (TOC) measurements were performed every day for two weeks on the filtrate samples taken from the artificial fields. Results: As a result of the monitoring, it was determined that Ochrobactrum thiophenivorans (Ot) and Sphingomonas melonis (Sm) species and their mixtures could eliminate the Imidacloprid pesticide within two weeks’ time. The removal efficiencies were 100% for active ingredient for each bacterium and their mixtures while COD were 97% and 96% for Ot. and Sm., respectively. TOC and BOD5 removal rates were 97% for both types and their mixtures in one or two-week period. Mixture of Ot and Sm shows 98.5% for COD, BOD5 parameters and 97.5% for TOC parameter. Conclusions: The results that will be obtained will help in the rehabilitation of the receiving environments that are exposed to pesticides in our country and take precautions to avoid the accumulation of pesticides in the body of the humans who are at the top of the food chain.

  AtıfScopus23

  İncele
• Yüksek Lisans TeziAçık Erişim2018/r/munzur/6974
  İmidakloprid insektisitinin bazı toprak bakterileriyle biyoıslahının istatistiksel olarak değerlendirilmesi

  Ulaş Demirci

  Bu çalışmada, ülkemizin özellikle Akdeniz bölgesinde pamuk, antep fıstığı, domates, biber ve patlıcan yetiştiriciliğinde yaygın olarak kullanılan imidakloprid etken maddeli insektisitin bazı toprak bakterileriyle biyoıslahı üzerinde durulmuştur. Çalışmada izole edilen bakterilerin bulunduğu tarım toprağı Adana ili Alihocalı mahallesinde pamuk yetiştiriciliği yapılan bir tarladan alınan toprak örneklerinden temin edilmiştir. Bu maksatla insektisitin tarım arazilerinde kullanılması tavsiye edilen konsantrasyonları baz alınarak hazırlanan çözeltilerinin içine zirai alandan izole edilen ve zenginleştirilen bazı bakteri türleri ilave edilmiş ve yedi-on dört gün boyunca 24'er saatte bir olmak üzere alınan örneklerde kimyasal oksijen ihtiyacı (KOİ), biyolojik oksijen ihtiyacı (BOİ5), toplam organik karbon (TOK), pH ve çözünmüş oksijen ölçümleri yapılarak biyoıslah izlenmesi takip edilmiştir. Bu maksatla izole edilen ve zenginleştirilen bakteriler hem sıvı hem de laboratuvarda oluşturulan yapay tarla düzeneklerine aşılanmış ve sıvı ortamlarda ve topraktan elde edilen süzüntülerde haftada bir yapılan deneylerle söz konusu parametrelerde ne ölçüde bir değişime uğradıkları gözlemlenmiştir.

  İncele