Yeni Potansiyel Biosorbentlerle Kongo Kırmızısının Biosorpsiyon Çalişmaları

Öz

Adsorpsiyon prosesi atıksulardan asidik, bazik ve nötral boyaların gideriminde en etkili yöntemlerden birisidir. Tarımsal ve endüstriyel faaliyetler sonucu ortaya çıkan yan ürünler düşük maliyetli adsorbentler olarak bilinmektedir. Bu tür adsorbentler sulu çözelitilerden özellikle katyonik boyaların gideriminde doğal, ucuz ve etkin materyaller olarak bilinmektedir. Bu çalışmanın amacı pirina, fıstık kabuğu ve deniz kabuğu gibi doğal biosorbentler kullanarak sulu çözeltilerden kongo kırmızısı boyasının giderim verimliliğini araştırmaktır. Çalışmada kesikli şartlarda, karıştırma süresi ve başlangıç boya konsantrasyonu gibi değişen koşullarda optimum giderim verimleri değerlendirilmiştir. Langmuir, Freundlich ve Temkin izotermleri incelenerek temel ampirik eşitliklerle adsorpsiyon katsayıları hesaplanmıştır. Adsorpsiyon kinetikleri için Pseudo-Second-Order, Partikül içi difüzyon ve Elovich modelleri kullanılmıştır. Deneysel çalışmalar pirina, fıstık kabuğu ve deniz kabuğunun kongo kırmızısı gideriminde etkili biosorbentler olduğunu göstermiştir. 

Anahtar Kelimeler

• Biosorpsiyon,kongo kırmızısı,pirina,fıstık kabuğu,deniz kabuğu,izoterm,kinetik

Biosorption Studies on Congo Red by Novel Biosorbents

Öz

The adsorption process is one of the most efficient methods of reactive, acidic and direct dyes in neutral solutions removing pollutants from wastewater. The by-products from the agricultural and industrial could be assumed to be low-cost adsorbents. They are abundant in nature, inexpensive, require little processing, effective materials and ability to remove cationic dye from aqueous solution. The aim of the present study is to investigate the removal of congo red dye ions from aqueous solutions using bioserbents such as pirina, sea food shell and almond shell. The optimum conditions for adsorption by using a batch method were evaluated by changing contact time and initial dye concentration. The Langmuir, Freundlich and Temkin adsorption isotherm equations were derived form the basic empirical equations, and used for calculation of adsorption parameters. The equilibrium data fit well the Langmuir, Freundlich and Temkin isotherm. Three simplified models including Pseudo-Second-Order, Interparticle Diffusion and Elovich were used to test the adsorption kinetics. These results indicate a significant potential for the pirina, sea food shell and almond shell as an biosorbent material for congo red dye removal.

Anahtar Kelimeler

• Biosorption,congo red,pirina,almond shell,sea food shell,isotherm,kinetics

Kaynakça

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