Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Duran, Celal(3)
- Imamoglu, Mustafa(3)
- Gundogdu, Ali(2)
- Albayrak, Sinem(1)
- Aydın, Şeyma(1)
- Daulay, Amru(1)
- Emel Baki Kahveci(1)
- Gündoğdu, Ali(1)
- Huda, Miftahul(1)
- Kumaş, Cavit(1)
- Lestari, Devi(1)
- Manzak, Aynur(1)
- Onal, Yunus(1)
- Ozturk, Asuman(1)
- Prasetia, Hendra(1)
- Senturk, H. Basri(1)
- Sivrikaya, Sezen(1)
- Soylak, Mustafa(1)
- Sumardi, Slamet(1)
- Yassaroh, Yassaroh(1)
- Yildiz, Hulya(1)
- Yusmiati(1)
Yayınlar
- Yüksek Lisans TeziAçık Erişim2026Kızılcık çekirdeğinden (cornus mas.l.) üretilen aktif karbon ile biyobozunur AC/PVA nanofiber üretimi, karakterizasyonu ve sulardaki ağır metal kirliliğinin gideriminde kullanılabilirliğinin araştırılması
Emel Baki Kahveci
Dünya genelinde gıda ve tarım sektörlerinde üretim süreçleri sonucunda önemli miktarda yan ürün ve atık oluşmaktadır. Gelişmiş ülkelerde bu atıklar çeşitli geri kazanım ve değerlendirme yöntemleriyle ekonomik değere dönüştürülürken, Türkiye'de bu uygulamalar endüstriyel ölçeğe ulaşamamıştır. Bu çalışmada, tarımsal faaliyetler sonucu atık bir yan ürün olarak ortaya çıkan kızılcık (Cornus mas L.) çekirdeğinden, 1:1 oranında ZnCl₂ kimyasal aktivasyonu uygulanarak aktif karbon (KAC) üretilmiştir. Elde edilen aktif karbon, çevre dostu ve biyobozunur polimer olan polivinil alkol (PVA) ile kompozit hâle getirilmiş ve elektro-eğirme yöntemiyle AC/PVA nanofiberler üretilmiştir. KAC, saf PVA nanofiber ve AC/PVA nanofiber adsorbanların karakterizasyonu için BET yüzey alanı, SEM–EDS, FT-IR, XRD ve DSC analizleri gerçekleştirilmiştir. KAC için BET özgül yüzey alanı 1025.7 m²/g olarak belirlenmiş ve bu değer biyokütle kökenli aktif karbonlar için literatürde raporlanan yüksek yüzey alanlarıyla uyum göstermiştir. Sonuçlar, metal iyonuna ve adsorban yapısına bağlı olarak adsorpsiyon kapasitelerinin önemli ölçüde değiştiğini göstermiştir. KAC adsorbanı üzerinde en yüksek Qmax değeri Pb(II) iyonu için 110.557 mg/g, Cu(II) için 84.231 mg/g ve Cr(VI) için 87.234 mg/g olarak belirlenmiştir. Cd (II) için en yüksek Qmax değeri ise AC/PVA nanofiber üzerinde 48.053 mg/g olarak bulunmuştur. Kinetik analiz verilerinin yalancı ikinci mertebe kinetik modele daha iyi uyduğunu, izoterm analizlerinde ise deneysel verilerin doğrusal olmayan Langmuir izoterm modeli ile daha yüksek uyum sağladığını göstermiştir. Bu bulgular, kızılcık çekirdeğinden elde edilen aktif karbon ve PVA ve AC/PVA nanofiberlerin ağır metal giderimi için etkili, sürdürülebilir ve çevre dostu adsorbanlar olduğunu ortaya koymaktadır.
- Derleme MakaleYalnız künye2026Activated Carbon Derived from Coal and its Application for Wastewater Treatment
Daulay, Amru; Yassaroh, Yassaroh; Huda, Miftahul; Sumardi, Slamet; Prasetia, Hendra; Kumaş, Cavit; Yusmiati; Lestari, Devi
Coal is used to produce fuels, chemicals, and other high-value-added products to improve efficiency. Activated carbon (AC) derived from coal is an important part of coal’s resource utilization and is high-value-added. This study presents relevant research on AC derived from coal, including raw material selection, preparation methods, modification techniques, and regeneration methods. The potential applications of AC derived from coal for the adsorption of contaminants, including heavy metals, pesticides, pharmaceutical compounds, and organic and inorganic compounds, are reviewed. One of the advantages of using AC derived from coal in wastewater treatment is high adsorption, low cost, and sustainability.
- MakaleYalnız künye2018Adsorption of Cu(II) ions from aqueous solution by hazelnut husk activated carbon prepared with potassium acetate
Imamoglu, Mustafa; Ozturk, Asuman; Aydın, Şeyma; Manzak, Aynur; Gündoğdu, Ali; Duran, Celal
Hazelnut husk (HH), an agricultural waste, was converted to carbonaceous material by chemical activation using potassium acetate. The produced activated carbon (KAHHAC) was characterized by FTIR, SEM, N2 adsorption–desorption experiments, CHN elemental analysis, and determination of moisture, ash, and point of zero charge. KAHHAC was used for the batch adsorption of Cu(II) ions from aqueous solutions. Optimum pH and contact time were found to be 5.0 and 240 minutes, respectively. The adsorption equilibrium data were described well by the Langmuir equation providing 105.3 mg g−1 Cu(II) adsorption capacity. The pseudo-second-order model successfully described the kinetic of Cu(II) adsorption by KAHHAC. The adsorbed Cu(II) onto KAHHAC was completely desorbed by 0.5 M nitric acid. In conclusion, HH activated carbon (AC) produced by the potassium acetate activation method is a very useful and efficient sorbent material for the removal of Cu(II) from aqueous solution.
- MakaleYalnız künye2013Physicochemical characteristics of a novel activated carbon produced from tea industry waste
Gundogdu, Ali; Duran, Celal; Senturk, H. Basri; Soylak, Mustafa; Imamoglu, Mustafa; Onal, Yunus
Tonnes of waste are generated during tea production in Turkey, one of the black tea producing countries in the world. These wastes are not used for any purposes throughout industrial sector. The objective of this study is to bring in economic value to waste materials by producing activated carbons from wastes of a tea plant and to characterize their physicochemical properties. Three types of activated carbons were produced by chemical activation using zinc chloride from tea industry wastes (TIW). Mesoporous structure and surface area rise as the ratio of ZnCl2/TIW increases. When the ratios of ZnCl2/TIW were selected as 1/2:1, 1:1, and 2:1, mesoporous activated carbons are found in the percentages of 10.9%, 39.9% and 77.7% with BET surface areas of 706, 1066 and 1141 m(2) g(-1), respectively. The resultant activated carbons were characterized by analyses of proximate-ultimate, FT-IR, SEM, TGA, methylene blue-iodine numbers, and surface functional groups. (C) 2013 Elsevier B.V. All rights reserved.
- MakaleAçık Erişim2012Dehydrated hazelnut husk carbon: A novel sorbent for removal of Ni(II) ions from aqueous solution
Sivrikaya, Sezen; Albayrak, Sinem; Imamoglu, Mustafa; Gundogdu, Ali; Duran, Celal; Yildiz, Hulya
The present study has been performed to examine the adsorption ability of novel sorbent dehydrated hazelnut husk carbon (DHHC) towards Ni(II) ions from aqueous solution using the batch adsorption technique. The effective factors such as initial pH of the aqueous solution, contact time, initial Ni(II) concentration, adsorbent dosage, and temperature were investigated. The studies were also conducted to understand the effect of some co-existing ions which may be present in aqueous solutions. DHHC showed good adsorption potential for Ni(II) ions. The optimum initial pH value was selected as 5.0. The experimental data fitted well to the Langmuir adsorption isotherm model. Among the kinetic models tested for the adsorption of Ni(II), the pseudo-second-order model showed a good fit of the kinetic data. The thermodynamic parameters including the Gibbs free energy (ΔG), enthalpy (ΔH), and entropy (ΔS) changes indicated that the adsorption of Ni(II) ions onto DHHC was feasible, spontaneous, and exothermic in the temperature range of 25-55°C. The results of this study showed the effectiveness and feasibility of DHHC for the removal of Ni(II) ions from aqueous solution.