Adsorption Equilibrium of Pb2+ Removal from Aqueous Solutions Using Spent Batteries

Öz

The main goals of water treatment at adequate quantity and quality are to improve the living con- ditions, reduce poverty among the people and to ensure human and economic development. This paper presents a report on removal of lead using a household waste (spent batteries). Spent batteries were collected, sectioned; carbon rods (cathode) were removed washed with distilled water and characterized. Carbon rods were ground into powder and sieved into different particle sizes. Properties of the powdered carbon rods (PCR) were studied. Ad- sorption properties of PCR were studied using synthetic lead solutions, typical raw water and domestic institutional wastewater with a particular attention to its equilibrium isotherms.

The study revealed that PCR has pores, it adsorbed Pb2+ from aqueous solutions (synthetic lead solution, raw water and domestic institutional wastewater). Equilibrium isotherms for Pb2+ adsorption from aqueous solutions can be grouped into two based on the values of correlation coef cient (R2) as follows: equilibrium isotherms with R2> 0.95 (Langmuir, Freundlich, Sips, Langmuir- Freundlich, Crombie-Quilty and McLoughin,Temkin,Koble- Corrigan, Fritz and Schlunder models) and R2< 0.95 (Hasley and Redlich- Peterson). Applicability of the process to lead ion removal from aqueous solutions showed that PCR can be used as an adsorbent for Pb2+ ions removal from aqueous solutions.

It was concluded that PCR is a good adsorbent for Pb2+ ions removal from aqueous solutions.

Anahtar Kelimeler

• Spent batteries,cathode,powdered carbon rods (PCR),adsorption properties,lead removal,equilibri- um isotherms

Atık Pilleri Kullanarak Sıvı Çözeltilerden Kaldırılan Pb2+nin Absorbsiyon Denklemi

Öz

Yeterli miktar ve kalitede su temin etmenin amaçları, yaşam koşullarını geliştirmek, insanlar arasındaki yoksulluğu (sefaleti) azaltmak, ve insanı ve ekonomik gelişimi garanti altına almaktır. Bu makale, evdeki atık maddeleri (atık pilleri) kullanarak kurşunun giderimi ile ilgili bir rapor sunmaktadır. Kullanılmış piller toplanıldı, bölümlere ayrıldı; katotlar, distile edilmiş suyla yıkandı ve özellikleri belirlendi. Karbon çubuklar, toz haline geti- rilip, farklı partikül büyüklüğe sahip eleklerden geçirilmiştir. Toz haline getirilmiş karbon çubuklarının (THGKÇ) özellikleri araştırıldı. THGKÇ’nın denge izotermlerine olan ilgiden dolayı; sentetik kurşun çözeltisi, tipik ham su ve yerli kurumsal atık kullanarak THGKÇ’nin absorbsiyon özellikleri incelendi.

Bu çalışmada, gözenekleri olan THGKÇ, sulu çözeltiden (sentetik kurşun çözeltisi, tipik ham su, ve yerli kurumsal atık) Pb2+ absorbe edildiği ortaya çıkmıştır. Sulu çözeltisindeki Pb2+ absorbsiyonu için korelasyon katsayıları baz alınarak denge izotermleri iki gruba ayrılabilir. Bunlar, R2> 0.95 (Langmuir, Freundlich, Sips, Langmuir- Freundlich, Crombie-Quilty and McLoughin,Temkin,Koble- Corrigan, Fritz and Schlunder models) ve R2< 0.95 (Hasley and Redlich- Peterson) şeklinde ifade edilebilir.

Bu çalışmada, sulu çözeltiden kurşun iyonunun giderimi (kaldırılması) ile ilgili bu prosesinin uygulanabilirliği, THGKÇ’nin, sulu çözeltilerden Pb2+ iyonlarının giderilmesini sağlayan bir absorbent olabileceğini göstermiştir. 

Anahtar Kelimeler

• Absorbsiyon özellikleri,atık piller,denge izotermler,katot,kurşun giderimi,THGKC

Kaynakça

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