Hakan Ciftci

Hakan Ciftci
Afyon Kocatepe University | AKU · Faculty of Engineering

Ph.D

About

39
Publications
7,735
Reads
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94
Citations
Citations since 2017
31 Research Items
93 Citations
20172018201920202021202220230510152025
20172018201920202021202220230510152025
20172018201920202021202220230510152025
20172018201920202021202220230510152025
Introduction
Hakan Ciftci currently works at the Faculty of Engineering, Afyon Kocatepe University. Hakan does research in Mining, Mineral Processing, Surface Chemistry, Nano Materials, Materials Chemistry and Adsorption.

Publications

Publications (39)
Article
In this study, some electrokinetic and surface properties of MBAOM-GMA copolymers synthesized from 2-[(methoxy-1,3-benzothiazole-2-yl) amino]-2oxoethyl methacrylate (MBAOM) and glycidyl methacrylate (GMA) monomers were investigated. Accordingly, (i) pH-dependent zeta (ζ) potential changes of the copolymers were investigated under a constant ionic s...
Article
Full-text available
In this study, the wetting behavior of a glass was evaluated according to the contact angles (θ) made with differentliquid drops, and also the effect of different test liquid groups on the calculation of its surface free energy (SFE)depending on the drop θ data examined in detail. While the polar test liquids used in θ measurements performed by the...
Article
This study focused on the comparison of ultrasound-assisted (UA) and conventional (shaking or stirring) adsorption techniques, taking into account the time-dependent adsorption capacities. Six different bentonite samples were used as adsorbents, and methylene blue (MB) was used as adsorbate. Effects of pH, contact time, MB initial concentration, an...
Conference Paper
Full-text available
Ultrasound-assisted (UA) adsorption is one of the most useful and novel processes to remove various pollutants from aqueous media. In this study, kinetics and isotherms of the UA-adsorption of methylene blue (MB) onto bentonite samples were investigated. Effects of contact time, MB initial concentration, and temperature on the UA-adsorption charact...
Article
Full-text available
Porous magnesium aluminate ceramics were produced with a sintering process of α-Al2O3 and MgO. Up to 20% by weight of corn starch were used as a pore-forming agent. Pellets were prepared by powder metallurgy technique and produced by solid-state sintering route. The porosity of the sintered pellets was characterized with and without adding corn sta...
Article
Full-text available
In this study, a pin-type vertical stirred media mill was used to perform the dry grinding of bentonite. Grinding time and stirring speed were investigated for effect on the particle size distribution and energy consumption (Ec), while ball charge and bentonite charge were kept constant as 60% and 40%, respectively. It was observed that raw bentoni...
Chapter
Full-text available
Purification of montmorillonite is a process to remove non clay minerals (gangue) such as calcite, feldspar, quartz, opal (C-T), and mica from montmoril-lonite ore. This is performed to make montmorillonite suitable for use in sensitive applications such as pharmaceutical, cosmetic, food, and advanced materials for nanotechnology. Gangue minerals i...
Article
Full-text available
Bu çalışmada, ağırlıklı olarak lizardit içeren bir kromit zenginleştirme tesisi atığından magnezyum (Mg) ekstraksiyonu için liç deneyleri yapılmıştır. X-ışını floresans (XRF) ve X-ışını kırınımı (XRD) analizleri, kromit zenginleştirme tesisi atık numunesinin ağırlıkça %39,3 MgO içerdiğini ve ağırlıklı olarak lizardit mineralinden oluştuğunu gösterm...
Article
Full-text available
In this study, leaching experiments were performed for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite. The X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyzes showed that the tailing sample contains 39.3wt.% MgO and consist of predominantly lizardite mineral. Hydrochloric acid (HCl)...
Article
Purification of raw bentonites and organo-bentonite preparations is sometimes required for industrial use. Zeta (electrokinetic) potential (ζ), contact angle (wettability/hydrophobicity), and surface free energy (SFE) are important surface characteristics and vary significantly according to the applied surfactant concentration when preparing organo...
Article
Full-text available
In this study, the effects of certain cleaning chemicals on the surface properties of a specific marble sample (Bilecik beige) were investigated as a function of chemical type, chemical concentration, and contact time. Descaler, diluted HCl (spirits of salt), soft soap, surface cleaner, bleach, diluted nitric acid, liquid scouring cream, dish soap,...
Book
Full-text available
Porous nanocomposites with high surface area are of great interest in many areas due to their excellent properties. In particular, these products, which contain magnetite nanoparticles (MNPs) in their structure, have the potential to be used in many areas (chemical, environmental, pharmaceutical, cosmetic, etc.) as adsorbent, catalyst, and controll...
Article
Porous magnetic nanomaterials have attracted great attention in a variety of applications, particularly in the magnetically targeted and/or controlled release of various species. In this study, a new route was determined to prepare magnetic and mesoporous montmorillonite/magnetite nanocomposites (Mt-Mag NCs). The changes of textural properties of M...
Article
Inorganic magnetic materials with porous and high surface area structures have received great interest in various applications, particularly as magnetically directed adsorbents and controlled release systems for various species. In the presented study, silica pillared magnetite/clay nanocomposites (SPMCs) were prepared as a function of tetraethyl o...
Article
Full-text available
İtriyum (Y) ve Evropiyum (Eu) elementleri floresan lambaların iç yüzeyinde kullanılan fosfor tozu başta olmak üzere sayısız birçok alanda kullanılmaktadır. Diğer yandan, bu elementlerin ileri teknolojik ürünlerdeki kullanımı da son yıllarda artış göstermiştir. Bu çalışmada fosfor tozundaki Y ve Eu metallerinin farklı süre ve sıcaklıklarda yapılan H...
Article
Full-text available
Due to the increasing technology, the energy requirement is also increasing, this situation causes rapid depletion of our underground resources. In such a case, the efficiency of coal washing plants should be increased. In addition, coal waste should be enriched and brought to the economy. In this study, the enrichment of slime coal waste at the Ko...
Thesis
Full-text available
Yüksek yüzey alanına sahip gözenekli nano-kompozitler sahip oldukları mükemmel özelliklerinden dolayı birçok alanda büyük ilgi görmektedir. Özellikle yapısında manyetit nano-partiküller (MNP) içeren bu ürünler, manyetik hedeflendirilme, yüksek termal ve kimyasal stabilite ve kontrollü salım yapabilme yeteneklerinden dolayı adsorban, katalizör ve ko...
Article
Full-text available
Yeraltı kaynaklarımızın hızla tükendiği bugünlerde yerli kömür ihtiyacımız da hızla artmaktadır. Bu yüzden yıkama tesislerinde yıkama verimlerini maksimum seviyelere çıkarmak gerekmektedir. Bazı durumlarda ise tesis performansını artırmak yeterli kalmayacak ve tesis atıklarının da tekrar zenginleştirilerek ekonomiye kazandırılması gerekecektir. Bu...
Article
Full-text available
In this study, usability of marble and boron wastes as alternative raw materials in the production of bricks was investigated. They were used in different ratios to prepare samples. Marble waste in concentrations of 5, 10, 15 and 20 wt% were added to the boron waste. Afyon brick clay was used as a binder in 10 wt%. Specimens were shaped by hydrauli...
Article
Full-text available
Anahtar Kelimeler Linyit, Kömür, Kömür yıkama, Yüzdürme batırma. Özet: Bu çalışmada, Koyunağılı (Mihalıççık/Eskişehir) linyitlerinin yıkanabilirliği incelenmiştir. Yapılan kısa analiz sonuçlarına göre tüvenan linyit numunesinin kuru bazda %53,47 kül, %18,59 karbon ve 2720 kcal/kg'lık alt ısıl değeri (AID) verdiği ve ASTM standardına göre "linyit B"...
Article
Full-text available
In this study, pre-enrichment of a typical lead-zinc leaching plant solid tailings were investigated. After the leaching process, due to the decrease in the grain size of the residual minerals (filter cake) and the deterioration of the mineral crystal structures, a concentrate with high recovery for lead (Pb) and zinc (Zn) could not be obtained wit...
Poster
Full-text available
Pillared interlayered clays (PILCs), porous clay heterostructures (PCHs) or silica based porous nano-particles, have attracted great attention due to their excellent properties such as good thermal stability, large surface area, and micro-mesoporous structure [1-3]. These nanocomposites can be used effectively as adsorbents [4], catalysts [5], drug...
Conference Paper
Full-text available
Özetçe - Çevre bilincinin ön plana çıktığı günümüzde, mermer atıklarının çevreye gelişi güzel atılması ve bu atık sahalarının gün geçtikçe büyümesi toplumu ve çevreyi olumsuz yönde etkilemektedir. Bu olumsuzluğun giderilmesi için atıkların uygun bir şekilde bertaraf edilmesi gerekmektedir. Bu çalışmada; mermer parça atıkların ekonomiye kazandırılma...
Article
Full-text available
In this study, magnetite (Fe3O4) nanoparticles were synthesized by chemical co-precipitation method, coated with silica, and then the surface of silica coated magnetite (Fe3O4@SiO2) nanoparticles was modified with (3- aminopropyl)triethoxysilane (APTES) at first. Secondly, attained nanoparticles were characterized by the Fourier transform infrared,...
Article
Full-text available
A new methacrylate monomer 2-(4-nitrophenyl)-2-oxoethyl-2-methacrylate (NFM) was synthesized and its radical copolymerization with glycidyl methacrylate (GMA) was studied in 1,4-dioxane solution at 65°C using 2,2′-azobisisobutyronitrile as an initiator. The synthesized monomer and copolymers were characterized by FTIR, ¹H and ¹³C-NMR spectroscopy....
Book
Full-text available
Üç aşamadan oluşan bu çalışmada ilk olarak kimyasal çöktürme yöntemiyle nano boyutlu manyetit sentezlenmiş ve sonra silikayla kaplanıp amin ile yüzey modifikasyonu yapılarak modifiye manyetit elde edilmiştir. İkinci aşamada, elde edilen bu ürünler FTIR, XRD, TEM, BET, VSM, ZetaMetre cihazları/teknikleri kullanılarak karakterize edilmiştir. Son aşam...
Conference Paper
Full-text available
In this study, optimum conditions have been determined by ore concentration experiments with dry magnetic separation on raw manganese ore supplied from Kütahya/Emet region which has high silisium (SiO2) content. Feed rate, magnetic field intensity, roll speed and angle of seperator knife were examined as variable parameters of the concentration exp...
Article
Full-text available
This article intends to investigate the kinetic and thermodynamic properties of adsorption process of hexavalent chromium [Cr(VI)] ions on magnetite nano-particles (Fe3O4, MNPs). In accordance with this purpose, MNPs were synthesized by chemical co-precipitation method and characterized by FTIR, TEM and VSM methods at first. After that, a series of...
Article
Full-text available
This article intends to investigate the kinetic and thermodynamic properties of adsorption process of hexavalent chromium [Cr(VI)] ions on magnetite nano-particles (Fe3O4, MNPs). In accordance with this purpose, MNPs were synthesized by chemical co-precipitation method and characterized by FTIR, TEM and VSM methods at first. After that, a series of...
Poster
Full-text available
In this study, magnetite nano-particles (MNPs) were synthesized by chemical co-precipitation method at first, and then MNPs were coated with silica by modified Stöber process and the surface of silica coated MNPs were functionalized by 3-aminopropyl-triethoxysilane (APTES). Finally, the prepared NPs were characterized by Fourier transform infrared...
Thesis
Full-text available
Üç aşamadan oluşan bu çalışmada ilk olarak kimyasal çöktürme yöntemiyle nano boyutlu manyetit sentezlenmiş ve sonra silikayla kaplanıp amin ile yüzey modifikasyonu yapılarak modifiye manyetit elde edilmiştir. İkinci aşamada, elde edilen bu ürünler FTIR, XRD, TEM, BET, VSM, ZetaMetre cihazları/teknikleri kullanılarak karakterize edilmiştir. Son aşam...

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