Adsorption kinetics of Pb2+ removal from aqueous solutions using spent batteries

İçme su kaynaklarındaki kurşun ve kurşun zehri günümüzde yaygın olarak ifade edilmektedir. Buçalışma evsel bir atık (kullanılmış pil) kullanarak, sıvı çözeltiden kurşun iyonlarının kaldırılması üzerine bir bilgisunmaktadır. Kullanılmış piller toplanılıp kesitlerine ayrıldıktan sonra, karbon çubukları çıkarıldı ve öğütüldü.Adsorbentlerin adsorpsiyon özellikleri kinetic modeller ve maliyet anazlileri dikkate alınarak, tipik kirleticilerve sentetik kurşun çözücüler kullanılarak çalışıldı. Korelasyon katsayısı değerlerine göre mevcut çalışma kineticmodellerin iki şekilde gruplandırılabileceğini ortaya koydu. Farklı pH değerlerinde (7.2 and 3.2) PCR üzerinePb2nin adsorpsiyon kinetiği, sırasıyla R 2 = 0.855 de 0.250 (l/h), 0.375 (mg/g) ve R2 = 0.992 de 0.095(l/h),0.169(mg/g) idi. Tipik kirleticiler ve ham su örnekleri, PCRnin sulu çözeltilerden Pb2+nin kaldırılması için biradsorbent olarak kullanılabileceğini gösterdi. Maliyet analizleri ortlama 1 kg karbon çubukları üretmenin ortakve ortak olmayan elektrik kaynakları için sırasıyla 0.875USD ve 1018 USD mal olacağını gösterdi. Çalışma, biradsorbent olarak PCR üzerine Pb2+ adsorbsiyon mekanizmasının iki adımda gerçekleştiği ortaya çıktı.

Atık pilleri kullanarak sıvı çözeltilerden kaldırılan Pb 2+ nin adsorbsiyon kinetiği

Lead poison and lead in drinking water sources are common reports nowadays. This paper presentsa report on removal of lead ion from aqueous solution using a household waste (used batteries). Spent batterieswere collected, sectioned; carbon rods were removed and ground into powder. Powdered Carbon Rods (PCR) weresieved into different particle sizes. Adsorption properties of the adsorbent were studied using synthetic lead solutionsand typical wastewaters with a particular attention to kinetics models and cost analysis. The study revealed thatkinetic models can be grouped into two based on the values of correlation coeffcient (R2) as adsorption kineticsmodels with R 2 less than 0.96 and adsorption kinetics models with R 2 greater than 0.96. The adsorption kineticof Pb2+ onto PCR at different pH were 0.250 (l h-1 ), 0.375 (mg g-1 ) with R 2 = 0.855 and 0.095(l h-1 ), 0.169(mg g-1 )with R 2= 0.992 at initial pH of 7.2 and 3.2 respectively for Pseudo frst-order. Applicability of the process to typicalwastewaters and raw water samples showed that PCR can be used as an adsorbent for Pb2+ removal from aqueoussolutions. The study concluded that the mechanism of adsorption of Pb2+ onto PCR as an adsorbent followedtwo-steps intra-particle and pore diffusion transport. The average costs of producing a kilogram of powderedcarbon rods were found to be 0.875USD and 1.018 USD for public and generator electricity sources respectively.The cost producing PCR is dearer compared to the cost of producing empty fruit bunches (0.50USD kg-1 ),0.068 USD kg-1 of powdered corn cob, cheaper compared to the cost of producing pencon shell based activated carbon(2.72 USD kg-1) and sugar cane based granular activated carbon by steam (3.12 USD kg-1 ).

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