Sulu Çözeltilerden Rodamin B'nin Verimli Bir Şekilde Uzaklaştırılması için Sürdürülebilir Düşük Maliyetli Bir Adsorban Olarak Mısır Kabuğu Atığının Değerlendirilmesi

Öz

Bu araştırma, mısır kabuğu külü kullanarak, sulu çözeltilerden Rhodamine B (RhB) boyasının uzaklaştırılması için ucuz ve çevre dostu bir adsorbanın geliştirilmesini incelemektedir. Hipotez, tarımsal atıkları etkili bir adsorban olarak yeniden kullanarak çevreye verdiği olumsuz etkiyi en aza indirmek şeklindedir. Adsorban malzeme (mısır kabuğu külü), SEM, FTIR ve XRD,  analizleri kullanılarak karakterize edilmiştir. Adsorpsiyon performansı, farklı başlangıç pH değeri ve farklı sıcaklığa sahip ortam koşulları altında değerlendirilmiştir. Birim adsorban başına adsorplanan boyar madde miktarı, nötr pH'da 90 dakika temas süresi içinde 35,22 mg/g'lık maksimum kapasiteye ulaşmıştır. Adsorpsiyon işlemindeki mekanizmaları, proses tasarımı ve fazlar arasındaki denge dağılımını irdeleyebilmek adına kinetik ve izoterm modelleri deneysel verilere uygulanmıştır. Mısır kabuğu külünün rhodamine B boyar maddesinin gideriminde Langmuir izotermi ve sözde ikinci dereceden kinetik modelin daha uygun olduğu belirlenmiştir. Adsorbanın yeniden kullanılabilirliğini incelemek için rejenerasyon testleri, saf su kullanılarak gerçekleştirilmiş ve ortam sıcaklığında %17,46 ve yüksek sıcaklıkta (50 °C) %24,99 desorpsiyon verimi hesaplandı. Adsorbent hazırlama maliyetinin olmaması, tarımsal atıkların değerlendirilmesi, minimum enerji kullanımı ve atıkların bertaraf edilmesiyle çevre kirliliğini azaltmış olması gibi birçok olumlu yönüyle yeşil kimya prensipleriyle uyumlu, sürdürülebilir bir çalışma ortaya konulmuştur. Mısır kabuğu külünün kimyasal bir ön işlem olmadan boyar maddelerin gideriminde kullanımının uygunluğu bu çalışmayla sergilenmiştir.

Anahtar Kelimeler

• Boya Adsorpsiyonu
• Tarımsal atık
• Sürdürülebilirlik
• Kinetik Model
• İzoterm Model

Destekleyen Kurum

Bu araştırmayı desteklemek için dış fon kullanılmıştır. Bu çalışma Malatya Turgut Özal Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi tarafından 26G11 proje numarası ile desteklenmiştir.

Etik Beyan

Bu çalışmanın hazırlanma sürecinde bilimsel ve etik ilkelere uyulduğu ve yararlanılan tüm çalışmaların kaynakçada belirtildiği beyan olunur.

Valorization of Corn Husk Waste as a Sustainable Low-Cost Adsorbent for the Efficient Removal of Rhodamine B from Aqueous Solutions

Öz

Using corn husk ash, this research explores the development of an inexpensive, eco-friendly adsorbent for the removal of Rhodamine B (RhB) dye from aqueous solutions. The hypothesis was to minimize the negative environmental impact by reusing agricultural waste as an effective adsorbent. The adsorbent material (corn husk ash) was characterized through SEM, FTIR, and XRD analyses. Adsorption performance was evaluated under different initial pH values ​​and ambient temperatures. The amount of dye adsorbed per unit of adsorbent reached a maximum capacity of 35.22 mg/g within a contact time of 90 minutes at neutral pH. Kinetic and isotherm models were applied to experimental data to investigate the mechanisms in the adsorption process, process design, and equilibrium distribution between phases. It has been determined that the Langmuir isotherm and the pseudo-second-order kinetic model are more suitable for the removal of rhodamine B dye from corn husk ash. To investigate the reusability of the adsorbent, regeneration tests were performed using pure water, and desorption efficiencies of 17.46% at ambient temperature and 24.99% at high temperature (50 °C) were calculated. This study demonstrates a sustainable approach consistent with green chemistry principles, offering numerous positive aspects such as the elimination of adsorbent preparation costs, the utilization of agricultural waste, minimum energy consumption, and reduced environmental pollution through waste disposal. The suitability of using corn husk ash for dye removal without chemical pretreatment has been demonstrated in this study.

Anahtar Kelimeler

• Dye Adsorption
• Agricultural Waste
• Sustainability
• Kinetic Models
• Isotherm Models

Destekleyen Kurum

The author(s) acknowledge that they received external funding to support this research. The study was supported by Malatya Turgut Ozal University Scientific Research Projects Coordination Unit with project number 26G11.

Etik Beyan

It is declared that scientific and ethical principles were followed during the preparation of this study and that all studies used are stated in the bibliography.

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