Browsing by Author "Kaya, Nihan"
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Adsorption of Congo red from aqueous solution onto KOH-activated biochar produced via pyrolysis of pine cone and modeling of the process using artificial neural network
Kaya, Nihan; Uzun, Zeynep Yildiz; Altuncan, Ceren; Uzun, Harun (Springer Heidelberg, 2021)Most of dyes cause various environmental and health problems due to their toxic, mutagenic, and even carcinogenic properties. Therefore, several treatment methods are used to remove dyes from wastewater. Adsorption is one ... -
Alümina aerojellerin fiziksel özellikleri üzerine yaşlandırma ve kurutma süresinin etkisi
Öz, Dilek Cantürk; Öz, Beytullah; Kaya, Nihan (2018)Düşük yoğunluğa, yüksek gözenekliliğe ve çok iyi yalıtım kabiliyetine sahip olan aerojeller son yıllarda giderek önem kazanmış ve birçok alanda kullanım yeri bulmuştur. Dayanıklı ve çevre dostu malzemeler olmaları sebebiyle ... -
Cam elyaf ile katkılandırılmış tarımsal atıklar kullanılarak üretilen lif levhaların (MDF) mekanik ve fiziksel özelliklerinin incelenmesi
Kaya, Nihan (Gazi Üniversitesi, 2018)Orman ve orman ürünleri, ülkelerin ekonomik kalkınmalarında önemli bir rol oynamaktadır. Özellikle mobilya sektörü malzeme ve ürün çeşitliliğinin yüksek olması sebebiyle ihracatını sürekli arttıran, yeniliklere açık ... -
A comprehensive study on adsorption behavior of some azo dyes from aqueous solution onto different adsorbents
Kaya, Nihan (IWA Publishing, 2017)One of the major environmental problems is the existence of dye materials in water sources. This pollutant must be removed from water by appropriate methods. Although most of these methods are efficient for the treatment ... -
Çam kozalağının pirolizi ile elde edilen biyokömürün karakterizasyonu ve sulu çözeltilerden kongo kırmızısının gideriminde adsorpsiyon özelliklerinin incelenmesi
Altuncan Kesen, Ceren (Hitit Üniversitesi, 2022)Boyaların çoğu toksik, mutajenik ve hatta kanserojen özelliklerinden dolayı çeşitli çevre ve sağlık sorunlarına neden olmaktadır. Bu nedenle, boyaları atık sudan uzaklaştırmak için çeşitli arıtma yöntemleri kullanılır. ... -
Çeltik kabuğunun pirolizi ile elde edilen biyokömürün karakterizasyonu ve çevresel kirleticilerin gideriminde etkinliğinin araştırılması
Carus Özkeser, Esma (Hitit Üniversitesi, 2022)Bu çalışmada, çeltik kabuğunun pirolizi sonucu elde edilen biyokömür (ÇKB) ürünü, bazik aktivasyon ajanı (KOH) kullanılarak, kimyasal olarak aktive edilmiştir. Aktivasyon işlemi ÇKB ürününün yüzey alanını arttırmak ve daha ... -
Effect of carbon nanoparticles on the I V characteristics of dye doped nematic liquid crystal
Akkurt, Fatih; Kaya, Nihan; Alıcılar, Ahmet (Czech Society of Chemical Engineering, 2014)[No abstract available] -
Fındık kabuğu ve ceviz kabuğunun pirolizi ile biyokömür üretimi ve sulu çözeltilerden ağır metal gideriminde adsorpsiyon özelliklerinin incelenmesi
Arslan, Ferhat (Hitit Üniversitesi Fen Bilimleri Enstitüsü, 2018)Canlılar üzerinde pek çok fizyolojik ve toksik etkileri bulunan ağır metallerin uygun arıtma teknikleri kullanılarak sucul ortamdan uzaklaştırılması büyük önem arz etmektedir. Bu çalışmada, ülkemizde bol miktarda bulunan ... -
Fındık ve çeltik kabukları ve odun talaşı ile takviye edilmiş termoset kompozitlerde reçine türünün fiziksel özelliklere etkisi
Kaya, Nihan (Afyon Kocatepe Üniversitesi, 2017)Ekonomik ve çevresel kaygılar sebebiyle son yıllarda mobilya sektörünün ana hammaddesi olan masif ağaç malzemeler yerine ahşap esaslı kompozit malzemelerin kullanılması tercih edilmektedir. Fındıkkabuğu ve çeltik kabuğu, ... -
Guest-host interaction of some chloroanthraquinone dyes doped in liquid crystalline matrix and effect of addition of carbon nanotube
Şen, Eylem; Kaya, Nihan; Alıcılar, Ahmet (2013)Liquid crystals (LCs) are commonly used in displays. For practical guest-host applications, it is important to choose dyes with a high ability of orientation in the liquid crystal matrix. In this work, two different nematic ... -
Investigation of effectiveness of pine cone biochar activated with KOH for methyl orange adsorption and CO2 capture
Kaya, Nihan; Uzun, Zeynep Yildiz (Springer Heidelberg, 2021)In this study, pyrolysis of pine cone, a lignocellulosic biomass, was carried out in a fixed bed reactor. The biochar product obtained was activated by using chemical activation method. KOH was used as the activating agent ... -
Investigation of effectiveness of pyrolysis products on removal of alizarin yellow GG from aqueous solution: a comparative study with commercial activated carbon
Kaya, Nihan; Yildiz Uzun, Zeynep (Iwa Publishing, 2020)The increasing use of dyestuff in industrial applications brings with it environmental problems. These dyes, which are an eco-toxic hazard, are common water pollutants, even at very low concentrations in water resources. ... -
Kinetic and thermodynamic studies on the adsorption of Cu2+ ions from aqueous solution by using agricultural waste-derived biochars
Kaya, Nihan; Arslan, Ferhat; Uzun, Zeynep Yildiz; Ceylan, Selim (Iwa Publishing, 2020)In this study, it was aimed to investigate the adsorption properties of the biochars obtained by pyrolysis of hazelnut and walnut shells for removal of copper ions from aqueous solutions. The characterization of raw biomasses ... -
Light-scattering determination of visco-elastic and electro-optic parameters of azo and anthraquinone dye-doped liquid crystal molecules and consistent neural network empirical physical formula construction for scattering intensities
Yıldız, Nihat; Polat, Ömer; San, Sait Eren; Kaya, Nihan (2011)In this paper, we achieved two aims. Firstly, laser light-scattering intensities in methyl red (MR) azo and disperse red (DR) anthraquinone dye-doped nematic liquid crystal (NLC) molecules were measured versus scattering ... -
The orientational behaviour of some aminoanthraquinone dyes in E8 and ZLI-1132 nematic solvents and effect of addition of carbon nanotubes
Kaya, Nihan (2011)Guest-host liquid crystal displays have been widely utilised because of their many advantages such as colour, wide viewing angle and high brightness. For practical guest-host applications, it is important to choose dyes ... -
Phase transitions and molecular orientation in nematic liquid crystals doped with blue-red dye mixtures and carbon nanotubes
Alıcılar, Ahmet; Kaya, Nihan; Akkurt, Fatih (2013)Phase transitions and molecular orientation in nematic liquid crystals (E7, E8, E63 and ZLI-1132) doped with blue dye (disperse blue 1, 3, 14 or 134) and blue 14 + red dye (disperse red 1, 60 or methyl red) mixtures were ... -
Preparation and Characterisation of Biochar from Hazelnut Shell and Its Adsorption Properties for Methylene Blue Dye
Kaya, Nihan; Yıldız, Zeynep; Ceylan, Selim (2018)One of the major pollutants in water resources are organic dyes that are widely used by different industries. Methylene blue (MB) is one of them which is quite harmful for aquatic life. This pollutant must be removed with ... -
Production and characterization of carbon-based adsorbents from waste lignocellulosic biomass: their effectiveness in heavy metal removal
Kaya, Nihan; Arslan, Ferhat; Yildiz Uzun, Zeynep (Taylor & Francis Inc, 2020)In this study, hazelnut shell and walnut shell which are the agricultural wastes existent abundantly in many countries were pyrolyzed at different temperatures in the temperature range of 400-700 degrees C in order to ... -
Pyrolysis and optimization of chicken manure wastes in fluidized bed reactor: CO2 capture in activated bio-chars
Yildiz, Zeynep; Kaya, Nihan; Topcu, Yildiray; Uzun, Harun (Elsevier, 2019)In this study, the Response Surface Methodology (RSM) based on Central Composite Design (CCD) was used to determine the optimization of bio-char production from chicken manure wastes. The effects of temperature, heating ... -
Removal of Congo Red and Rhodamine B dyes from aqueous solution using unmodified and NH3/HCl-modified wood charcoal: a kinetic and thermodynamic study
Kaya, Nihan (Taylor & Francis Inc, 2021)In recent years, color removal processes from industrial wastewater which contains dyestuffs have gained great importance. Especially, textile industry wastewater with high volume and variable composition comes first among ...
