Sürdürülebilir Kalkınma Amaçları
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- Yüksek Lisans TeziAçık Erişim2019Rodamin 6g Boyarmaddesinin Karaağaç (Ulmus Glabra) ve Dut (Morus Alba) talaşı üzerine adsorpsiyonla atık sulardan uzaklaştırılması
Ceyhun Reis
Bu tez kapsamında, katyonik bir boyarmadde olan Rodamine 6G'nin (R6G) sulu çözeltilerden uzaklaştırılmasında; düşük maliyetli, bol miktarda bulunan ve çevre dostu adsorban olarak karaağaç (KAT) ve dut (DT) talaşı kullanılmış ve mevcut pahalı yöntemlere alternatif sunulmaya çalışılmıştır. Adsorbanların karakterizasyonları Boehm titrasyonu, pHpzc ve nem miktarı tayini gibi yöntemlerle gerçekleştirilmiştir. R6G'nin KAT ve DT üzerine adsorpsiyon verimini etkileyebilecek; sulu çözelti pH'ı, denge süresi, adsorban miktarı ve başlangıç R6G konsantrasyonu gibi çeşitli faktörlerin etkileri incelenmiş ve optimum deneysel koşullar belirlenmiştir. Ayrıca iyonik şiddetin adsorpsiyon süreci üzerindeki etkileri de incelenmiştir. R6G'nin her iki adsorban üzerine adsorpsiyonu için optimum sulu çözelti pH'ının 7.0 ve denge süresinin 180 dakika olduğu görülmüştür. Adsorpsiyon kinetiğinin, ikinci dereceden kinetik modeli takip ettiği ve deneysel verilerin hem Langmuir hem de Freundlich izoterm modellerine iyi bir uyum gösterdiği tespit edilmiştir. KAT ve DT'nin monolayer adsorpsiyon kapasitesi Langmuir izoterm modeli kullanılarak sırasıyla 50.5 ve 31.8 mg g-1 olarak bulunmuştur. Literatürde verilen diğer adsorbanlarla karşılaştırma sonucunda karaağaç ve dut talaşının boyarmadde gideriminde kullanılacak etkili ve düşük maliyetli seçenek olabileceği sonucuna varılmıştır.
- MakaleYalnız künye2019Assessment of Heavy Metal Contents of Mulberry Samples (Fruit, Leaf, Soil) Grown in Gumushane Province; [Beurteilung des Schwermetallgehaltes bei Maulbeeren (Frucht, Blatt, Boden) aus der Region Gumushane]
Kalkisim, Ozgun; Ozdes, Duygu; Baltaci, Cemalettin; Duran, Celal
The present study aims to identify the heavy metal contents of white mulberry (Morus alba L.) and black mulberry (Morus nigra L.) that are grown in the city center of Gumushane province and its neighboring counties. Heavy metal analyzes were performed in the fruits, leaves and soils of the plants. The control samples, on the other hand, were collected from the mulberry trees located 3 km away from the highway where the vehicle traffic and industrial activities are at their lowest. Sample collection was performed twice a year, namely during the ripening period and fully ripening period of the fruits. The analyses of the heavy metals were performed by using inductively coupled plasma-mass spectrophotometry (ICP-MS). The obtained results were compared with the acceptable limits of heavy metal for humans as established by the World Health Organization (WHO), Turkish Food Codex (TFC) and the literature and an opinion was submitted as to whether they present any risk in terms of human health. When the available data is evaluated, the mulberries grown in Gumushane province, were found to have presented a health risk in terms of Pb, Cd, Ni, Cu, Zn, Mn and Co metals.
- MakaleAçık Erişim2016Investigation of Hydroxymethylfurfural Formation in Herle
Baltacı, Cemalettin; Ilyasoglu, Huri; Gundogdu, Ali; Ucuncu, Osman
Mulberry pestil and köme are Turkish traditional foods made from herle. Browning leads to quality losses in the herle, and its products. In this study, the effect of thermal treatment on the hydroxymethylfurfural formation and color values in the herle was evaluated. The herle samples were kept at different temperatures (60–110°C) and times (2–6 h). The hydroxymethylfurfural formation was found to increase with increasing time and temperature. The legal limit for hydroxymethylfurfural in the pestil (50 mg/kg) was exceeded at temperatures above 90°C. The lightness (L* value) of the sample decreased with the thermal treatment, indicating browning.
- MakaleYalnız künye2013Determination of the pomological and morphological properties of white mulberry types growing in transition region between mild and continental climates
Kalkişim, Özgün
This study was performed in 2010 and 2011 in order to determine some pomological and morphological properties of 15 different mulberry types growing in the ecological conditions of Gümüşhane province. From chosen types, fruit and leaf samples were collected and analyzed during their growing season for the period of two years. By the end of the study, the following highest values were observed: fruit weight 27.30 g, fruit width (resp. height) 15.62 mm (resp. 30.32 mm), leaf width (resp. height) 100.84 mm (resp. 130.02 mm), leaf stalk length 50.94 mm, Brix 23.28%, pH 6.20, titratable acidity 0.20, invert sugar 20.57, sucrose 1.46 and total sugar 22.02 g/100 g. As a result of the study, knowing the fact that mulberry is an important raw material in the continuously growing dried fruit roll-up industry, it is concluded that the number of promising mulberry types with the finest properties, should be increased and their cultivation should be popularized.