Sepiyolit-Panı Kompozitlerinin Sentezi ve Sulu Çözeltilerden Kongo Kırmızısının Gideriminde Kullanımı
Yükleniyor...
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Selçuk Üniversitesi Fen Bilimleri Enstitüsü
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu tez çalıĢmasında Sepiyolit (SP) kilinin Kongo Kırmızısı (KK) boyasının üzerine adsorpsiyon
verimini artırmak için belirli oranlarda PANI ile kompozitler sentezlenmiĢ ve adsorpsiyon deneylerinde
uygulanmıĢtır. ÇalıĢmada PANI ve sepiyolit içeren kompozitler oksidatif polimerizasyon yöntemiyle
sentezlenmiĢtir. Malzemeler adsorban olarak KK boyasının sulu çözeltilerden adsorpsiyonunda
incelenmiĢtir. Süreç verimine pH etkisi, pH = 4-12 aralığında 100 mg/L deriĢime sahip sulu çözeltiler ile
çalıĢılmıĢtır. En yüksek adsorpsiyon verimine çözeltinin doğal pH değeri olan pH = 7,2ʼde saf PANI ile
%96,1, %50 SP ile %92,7, %75 SP ile %85 ve SP ile %67,7 olarak ulaĢılmıĢtır. Temas süresinin etkisi 48
saat boyunca incelenmiĢ ve kinetik çalıĢmalar sürecin PANI ile 12 saat, %50 SP ve %75 SP ile 15 saat ve
saf SP ile 18 saat içinde dengeye ulaĢtığını göstermiĢtir. Kinetik verinin görünür ikinci derece kinetik
model ile uyumlu olduğu görülmüĢtür. ÇalıĢılan dört adsorban türü için de doz arttıkça verim yüzdesinde
artıĢ olduğu gözlenmiĢtir. Boya deriĢimi ile birlikte verim azalmıĢtır. Sıcaklık etkisi 298-338 K aralığında
çalıĢılmıĢ, sıcaklık artıĢıyla adsorpsiyon verimi az da olsa azalmıĢ ve iĢlemin ekzotermik olduğu tahmin
edilmiĢtir. Yüksek belirlilik katsayıları (> 0,997) tüm adsorbanlar için Langmuir izoterm modelinin süreci
tanımlamak için uygun olduğunu göstermektedir.
In this thesis study, composites were synthesized with PANI at certain ratios to increase the adsorption efficiency of Sepiolite (SP) clay on Congo red (CR) dye and applied in adsorption experiments. In the study, composites containing PANI and sepiolite were synthesized by oxidative polymerization method. The materials were investigated as adsorbent in the adsorption of CR dye from aqueous solutions. The pH effect on the process yield was studied in the range of pH = 4-12 using aqueous solutions with a concentration of 100 mg/L. The highest adsorption efficiency was achieved at pH = 7.2, the natural pH of the solution, as 96.1% with PANI, 92.7% with 50% SP, 85% with 75% SP and 67.7% with SP. The effect of contact time was invstigated over 48 hours and kinetic studies showed that the process reached equilibrium within 12 hours with PANI, 15 hours with 50% SP and 75% SP, and 18 hours with pure SP. The kinetic data were found to be compatible with the pseudo second-order kinetic model. It was observed that the percentage yield increased as the dose increased for the four adsorbent types studied. Yield decreased with dye concentration. Temperature effect was studied in the range of 298-338 K, the adsorption efficiency decreased slightly with the increase in temperature and the process was estimated to be exothermic. High determination coefficients (> 0.997) indicate that the Langmuir isotherm model is suitable to describe the process for all adsorbents.
In this thesis study, composites were synthesized with PANI at certain ratios to increase the adsorption efficiency of Sepiolite (SP) clay on Congo red (CR) dye and applied in adsorption experiments. In the study, composites containing PANI and sepiolite were synthesized by oxidative polymerization method. The materials were investigated as adsorbent in the adsorption of CR dye from aqueous solutions. The pH effect on the process yield was studied in the range of pH = 4-12 using aqueous solutions with a concentration of 100 mg/L. The highest adsorption efficiency was achieved at pH = 7.2, the natural pH of the solution, as 96.1% with PANI, 92.7% with 50% SP, 85% with 75% SP and 67.7% with SP. The effect of contact time was invstigated over 48 hours and kinetic studies showed that the process reached equilibrium within 12 hours with PANI, 15 hours with 50% SP and 75% SP, and 18 hours with pure SP. The kinetic data were found to be compatible with the pseudo second-order kinetic model. It was observed that the percentage yield increased as the dose increased for the four adsorbent types studied. Yield decreased with dye concentration. Temperature effect was studied in the range of 298-338 K, the adsorption efficiency decreased slightly with the increase in temperature and the process was estimated to be exothermic. High determination coefficients (> 0.997) indicate that the Langmuir isotherm model is suitable to describe the process for all adsorbents.
Açıklama
Anahtar Kelimeler
Adsorpsiyon, İzoterm, Kinetik, Kompozit Sentezi, PANI, Sepiyolit, Adsorption, Isotherm, Kinetic, Composite Synthesis, Sepiolite
Kaynak
WoS Q Değeri
Scopus Q Değeri
Cilt
Sayı
Künye
Hurmuzlu, H. A. H., (2023). Sepiyolit-Panı Kompozitlerinin Sentezi ve Sulu Çözeltilerden Kongo Kırmızısının Gideriminde Kullanımı. (Doktora Tezi). Selçuk Üniversitesi, Fen Bilimleri Enstitüsü, Konya.
