Nitrik Asitle Modifiye Edilmiş Serpentin Kullanılarak Sulu Çözeltilerden Metil Oranj Boyanın Adsorpsiyonu

Yıl 2025, Cilt: 25 Sayı: 5, 1072 - 1080, 01.10.2025

Yalçın Altunkaynak , Mutlu Canpolat

https://doi.org/10.35414/akufemubid.1657989

Öz

Bu çalışmada, nitrik asit (HNO₃) ile modifiye edilmiş serpentin (MS) mineralinin atıksulardan metil oranj (MO) giderimindeki adsorpsiyon performansı değerlendirilmiştir. Adsorpsiyon sürecine etki eden çeşitli parametreler, özellikle temas süresi ve başlangıç MO konsantrasyonu, incelenerek adsorpsiyon verimliliği üzerindeki etkileri araştırılmıştır. Yapılan deneyler sonucunda, MO giderimi için optimum koşullar başlangıç MO konsantrasyonu 300 mg/L ve temas süresi 60 dakika olarak belirlenmiştir. MS’nin adsorpsiyon öncesi ve sonrası yüzey morfolojisi ile kimyasal bileşimindeki değişiklikler, taramalı elektron mikroskobu (SEM), enerji dağılım spektroskopisi (EDS) ve Fourier dönüşümlü kızılötesi spektroskopisi (FTIR) teknikleri kullanılarak analiz edilmiştir. Elde edilen bulgular, MO adsorpsiyonunun Langmuir izoterm modeli ile uyumlu olduğunu ve adsorpsiyon sürecinde hem kimyasal sorpsiyon hem de tersinmezlik etkilerinin önemli bir rol oynadığını ortaya koymuştur. MO için maksimum adsorpsiyon kapasitesi 25, 35 ve 45 °C sıcaklıklarında sırasıyla 36.90, 39.22 ve 40.98 mg/g olarak hesaplanmıştır. Ayrıca, adsorpsiyon kinetiği analizleri, MO gideriminin yalancı ikinci dereceden (PSO) kinetik modeli ile iyi bir uyum gösterdiğini ortaya koymuştur. Elde edilen sonuçlar, MS'nin yüksek adsorpsiyon kapasitesi, kolay temin edilebilirliği ve maliyet etkinliği sayesinde sulu ortamlardan MO boyar maddesinin uzaklaştırılmasında etkili ve uygulanabilir bir adsorban olduğunu göstermektedir.

Anahtar Kelimeler

Serpentin , Adsorpsiyon , Metil Oranj , İzoterm , Kinetik.

Adsorption of Methyl Orange Dye from Aqueous Solutions Using Nitric Acid-Modified Serpentine

Öz

In this study, the adsorption performance of nitric acid (HNO₃)-modified serpentine (MS) mineral in the removal of methyl oranıj (MO) from wastewater was evaluated. Various parameters affecting the adsorption process, especially contact time and initial MO concentration, were investigated and their effects on adsorption efficiency were investigated. As a result of the experiments, the optimum conditions for MO removal were determined as initial MO concentration of 300 mg/L and contact time of 60 minutes. Changes in the surface morphology and chemical composition of MS before and after adsorption were analysed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR) techniques. The results obtained revealed that MO adsorption was in accordance with the Langmuir isotherm model and both chemical sorption and irreversibility effects played an important role in the adsorption process. The maximum adsorption capacity for MO was calculated as 36.90, 39.22 and 40.98 mg/g at 25, 35 and 45 °C, respectively. Furthermore, adsorption kinetics analyses revealed that the MO removal was in good agreement with the pseudo-second order (PSO) kinetic model. The results obtained show that MS is an effective and applicable adsorbent for the removal of MO dyestuff from aqueous media due to its high adsorption capacity, easy availability and cost effectiveness.

Anahtar Kelimeler

Serpentine , Adsorption , Methyl Orange , ; Isotherm , Kinetics.

Kaynakça

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