Yazar "Akgül, Gökçen" için listeleme
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Adaptive neuro-fuzzy interference system modelling for chlorpyrifos removal with walnut shell biochar
Tulun, Şevket; Akgül, Gökçen; Alver, Alper; Çelebi, Hakan (Elsevier, 2021)Accumulation of chlorpyrifos (CP), a pesticide, causes a significant environmental problem in food, surface/ground waters further to human health. The removal of the CP pollutant in surface/wastewater could be achieved by ... -
Biochar modification to enhance sorption of inorganics from water
Sizmur, Tom; Fresno, Teresa; Akgül, Gökçen; Frost, Harrison; Moreno-Jimenez, Eduardo (Elsevier Sci Ltd, 2017)Biochar can be used as a sorbent to remove inorganic pollutants from water but the efficiency of sorption can be improved by activation or modification. This review evaluates various methods to increase the sorption ... -
Biochar-iron composites as electromagnetic interference shielding material
Akgül, Gökçen; Demir, Burak; Gündoğdu, Ayşenur; Türk, Ahmet Serdar; Sözer, Sözer (Iop Publishing Ltd, 2020)Electromagnetic waves emitted by electrical and electronic devices constitute interference with each other, which becomes a problem for security devices, space vehicles, ships, electronics or even human beings. Electromagnetic ... -
A biochar-modified carbon paste electrode
The present work examıned the use of biochar derived from tea waste as a novel electrode material. For the fabrication of the biochar electrode, suitable amounts of biochar and graphite were mixed with mineral oil for the ... -
Bi̇yokömür: Üreti̇mi̇ ve kullanım alanları
Akgül, Gökçen (2017)Artan dünya nüfusu, azalan enerji kaynakları ve fosil enerji kaynaklarının kullanımı sonucu ortaya çıkan küresel ısınma gibi dünyanın karşılaştığı enerji problemlerine alternatif enerji kaynakları ile çözümler sunulmaya ... -
Chemically exfoliated refined carbon from industrial tea waste for capacitive energy storage
Güngör, Ahmet; Akgül, Gökçen; Bakan Mısırlıoğlu, Feray; Erdem, Emre (Institute of Physics, 2024)Graphitic carbon materials, renowned as favored energy storage materials, offer exceptional features such as a high surface area, customizable surface functionality, stability, and durability and have been extensively ... -
Çay atığı biyokütlesinden türetilen yenilenebilir karbon ile silisyum altlık üzerine PN eklemi uygulaması
Akgül, Gökçen; Sözer, Sözer (Pamukkale Üniversitesi, 2023)Bu çalışmada fosil kaynaklı karbon yerine yenilenebilir, çevreci ve sürdürülebilir karbon kaynağı olarak çay atığı biyokütlesinden yarı iletken teknolojisine uygun P-tipi karbon geliştirilmiş ve N-tipi silisyum bir altlık ... -
Çay atıklarından türetilen yüksek performans karbonun transistörde iletim kanal materyali olarak uygulanması
Bıçakçı Saliha Nur; Akgül, Gökçen (Gazi Univ, 2020)Carbon materials are studied in high-tech electronics such as diodes, transistors similar devices. the use of porous carbon materials in electronic devices and their application in energy storage areas are important in ... -
Electrochemical energy storage capacity of surface engineered renewable carbon derived from Industrial tea waste by HNO3 and K2CO3
Akgül, Gökçen; Oskay, Kürşad Oğuz; Buldu Aktürk, Merve; Karamustafa, Ayşenur; Sözer, Sözer; Maden, Tuğba Bolat; Erdem, Emre (Pleiades Publishing, 2023)Direct electrical energy storage by supercapacitors is the leading energy storage technology. The performance of supercapacitors depends mainly upon the electrode material constituents. Carbon is the preferred energy storage ... -
Endüstriyel çay atıklarından üretilen biyokömürün yakıt pillerinde uygulanması-yenilikçi bir yaklaşım
Akgül, Gökçen; Turan, Zehra (Pamukkale Univ, 2020)Fuel cells play an important role in clean and efficient energy technologies. the proton exchange membrane (PEM) fuel cell, which uses hydrogen as fuel and operates at lower temperatures than other types, is important for ... -
Erratum to: Improving the electrochemical energy storage gapacity of the renewable carbon derived from industrial tea waste (Russian Journal of Electrochemistry, (2022), 58, 9, (844-854), 10.1134/S1023193522090099)
Karamustafa, Ayşenur; Sözer, Sözer; Oskay, Kürşad Oğuz; Buldu-Aktürk, Merve; Erdem, Emre; Akgül, Gökçen (Springer, 2024)..... -
Hydrothermal gasification of Rosa Damascena residues: Gaseous and aqueous yields
Akgül, Gökçen; Madenoğlu, Tülay Güngören; Cengiz, Nihal U.; Gökkaya, Dilek; Sağlam, Mehmet; Yüksel, Mithat (Elsevier, 2014)The gasification of Rosa Damascena residues - by-products of the rose-oil industry - was investigated under hydrothermal conditions at 500 degrees C and 600 degrees C, 35-45 MPa pressure with a reaction time of 1 h. the ... -
Hydrothermal liquefaction - Upgrading
Hornung, Ursel; Kruse, Andrea; Akgül, Gökçen (Blackwell Science Publ, 2014)... -
Improving the electrochemical energy storage capacity of the renewable carbon derived from industrial tea waste
Karamustafa, Ayşenur; Sözer, Sözer; Oskay, Kürşad Oğuz; Buldu Aktürk, Merve; Erdem, Emre; Akgül, Gökçen (Springer, 2022)Energy storage is gaining a vital role since the usage of portable electric/electronic devices and vehicles have been growing. Capacitors, called as electrochemical double layer capacitors or supercapacitors, find application ... -
Modification of natural zeolite with NaOH for removal of manganese in drinking water
Ateş, Ayten; Akgül, Gökçen (Elsevier Science Bv, 2016)Natural zeolite (NZ) obtained from the Manisa-Demirci region of Turkey was modified by NaOH aqueous solutions (0.5-2.0 mol/dm(3)) and the adsorption capacity of natural and modified forms was determined for manganese ... -
Modification of tea biochar with Mg, Fe, Mn and Al salts for efficient sorption of PO43- and Cd2+ from aqueous solutions
Akgül, Gökçen; Maden, Tuğba Bolat; Diaz, Elena; Moreno Jimenez, Eduardo (Iwa Publishing, 2019)There is a requirement to provide more efficient, sensitive, low-cost materials for remediation of contaminated water. Biochar as a sorbent is an effective and low-cost material to remove contaminants in water but its ... -
Optical and electrical properties of refined carbon derived from industrial tea waste
Akgül, Gökçen; Bıçakcı, Saliha Nur (Iop Publishing Ltd, 2020)The utilization of nano- and well-ordered carbon materials such as graphene especially in carbon-based electrical devices and in energy storage areas is becoming important in terms of developing economical methods and ... -
Production and characterisation of biochar from tea waste and its nickel removal capacity from aqueous solutions
Akgül, Gökçen; Ateş, Ayten; Yaşar, Gökhan; Hatipoğlu, Hakan (Inderscience Publishers, 2017)Biochar, a carbon-rich solid product of slow pyrolysis of biomass, has gained interest due to its application in the various aims. Investigating of adsorption properties of biochar for removing pollutants from waste water ... -
Semi-conductive carbon from industrial tea waste biomass for a p-n junction
Akgül, Gökçen; Tomakin, Murat; Erkaya, Hasan Hüseyin (Springer, 2024)Some semiconducting carbonaceous material was developed from industrial tea waste biomass by catalytic pyrolysis and heteroatom doping; then, a p-n junction was realized on an n-type Si substrate. I-V characteristics of ... -
Supercritical conversion of biomass
Akgül, Gökçen (Blackwell Science Publ, 2014)The focus of this chapter is biomass conversion in the supercritical water. the two main processes of the supercritical conversion of biomass are the supercritical water gasification and the supercritical water oxidation. ...
