PRODUCTION of ACTIVATED CARBON from MISTLETOE(VISCUM ALBUM L.), CHARACTERIZATION and INVESTIGATION of ITS USAGE for LEAD REMOVAL from AQUEOUS SOLUTION

Abstract

In this study, it was aimed to investigate the applicability of mistletoe (Viscum album L.) plant, which is parasitic on many trees in the world, but which is the subject of many studies in terms of its content, as an adsorbent. The mistletoe plant is first dried together with its stem and leaves. It was then treated with HCl and activated by thermal method. The activation process was carried out at 400 oC in a blast furnace in a nitrogen atmosphere. The characterization of the obtained activated charcoal was carried out using chemical, Fourier Transform Infrared Spectroscopy (FTIR), Thermal Analysis, Brunauer–Emmett–Teller (BET) and Scanning Electron Microscope (SEM) analysis methods. Characterized activated charcoal was used to remove lead (Pb+2) in aqueous solution and its effectiveness was tested. The experiments were carried out in batch process. In order to examine the effect of solution pH on lead removal, experiments were carried out at six different pH (1-6) and it was determined that the best removal was at pH: 5 with qe: 50.78 mg/g. While examining the effect of temperature on lead removal, experiments were carried out at three different adsorption temperatures (26oC-45oC). The effect of solid/liquid ratio on removal was determined for three different solid/liquid ratios (0.4-1g/l), and the highest removal percentage was obtained at 1g/l solid/liquid ratio, while the best adsorption capacity was determined at 0.4g/l solid/liquid ratio. At the end of the trials, it was determined that the activated charcoal obtained from the mistletoe by the thermal method can be used as a cheap, easily prepared and easily available adsorbent in lead removal.

Keywords

• Mistletoe
• Activated Carbon
• Characterization
• Adsorption
• Lead

ÖKSEOTU(VISCUM ALBUM L.) BİTKİSİNDEN AKTİF KÖMÜR ELDESİ, KARAKTERİZASYONU ve SULU ÇÖZELTİDEN KURŞUN GİDERİMİNDE KULLANILABİLİRLİĞİNİN İNCELENMESİ

Abstract

Bu çalışmada dünyada birçok ağaçta asalak olarak yaşayan buna rağmen içeriği bakımdan birçok araştırmaya konu olan ökseotu (Viscum album L.) bitkisinin adsorbent olarak değerlenrilebilirliğini araştırmak amaçlanmıştır. Ökseotu bitkisi öncelikle sap ve yapraklarıyla birlikte kurutulmuştur. Daha sonra HCl ile muamele edilmiş ve termal metodla aktifleştirme işlemi gerçekleştirilmiştir. Aktifleştirme işlemi azot atmosferinde yüksek fırında 400 oC’ de gerçekleştirilmiştir. Elde edilen aktif kömürün karakterizasyonu kimyasal, Fourier Transform Infrared Spectroscopy (FTIR), Termal Analiz, Brunauer–Emmett–Teller (BET) ve Taramalı Elektron Mikroskopu(SEM) analiz metodları kullanılarak gerçekleştirilmiştir. Karakterize edilen aktif kömür sulu çözeltide bulunan kurşunun (Pb+2) giderilmesinde kullanılmış ve etkinliği test edilmiştir. Denemeler kesikli proseste gerçekleştirilmiştir. Kurşun gideriminde çözelti pH’ının etkisinin incelenmesi amacıyla altı farklı pH’da (1-6) denemeler yapılmış ve en iyi giderimin qe:50.78 mg/g ile pH: 5 te olduğu tespit edilmiştir. Sıcaklığın kurşun giderimine etkisi incelenirken üç farklı adsorpsiyon sıcaklığında(26oC-45oC) denemeler gerçekleştirilmiş sıcaklığın artışı ile giderimin arttığı ve çalışılan sıcaklıklarda en iyi giderimin 45oC olduğu belirlenmiştir. Katı/sıvı oranının giderime etkisi ise üç farklı katı/sıvı oranı(0.4-1g/l) için belirlenmiş olup en yüksek giderim yüzdesini 1g/l lik katı sıvı oranında elde edilirken en iyi adsorpsiyon kapasitesi 0.4g/l lik katı/sıvı oranında belirlenmiştir. Yapılan denemeler sonunda ökseotundan termal metodla aktifleştirilerek elde edilen aktif kömürün kurşun gideriminde ucuz, kolay hazırlanabilir ve kolay temin edilebilir bir adsorbent olarak kullanılabileceği belirlenmiştir.

Keywords

• Ökseotu
• Aktif Karbon
• Karakterizasyon
• Adsorpsiyon
• Kurşun

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