Sulardaki nikel ve kadmiyumun bentonit ile giderilmesi
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Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Aksaray Üniversitesi Fen Bilimleri Enstitüsü
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Çalışma kapsamında, bentonit kullanılarak sulu çözeltilerden adsorpsiyon yöntemiyle nikel ve kadmiyum giderimi incelenmiştir. Optimum giderim koşullarının belirlenmesi amacıyla deneyler her iki metal için gerçekleştirilmiştir. Adsorpsiyon mekanizmasını etkileyen adsorban dozajı, temas süresi, sıcaklık ve adsorban boyutu parametrelerinin adsorpsiyon verimine etkileri araştırılmıştır. 0,1 mg/L (100 ppb) başlangıç derişimi için en uygun adsorban dozajı nikel giderimi için 3 g/25 mL ve kadmiyum için 1 g/25 mL olarak belirlenmiştir. Nikel ve Kadmiyum gideriminde 30 dakikada adsorpsiyon dengesine ulaşılmıştır. 40 °C’de her iki ağır metal içinde maksimum adsorpsiyon verimi elde edilmiştir. Adsorban boyutuyla ilgili Nikel gideriminde 0,5 mm boyuttaki bentonitle, kadmiyum giderimi içinse >2 mm boyutta en yüksek verim elde edilmiştir. Sürecin Langmuir izoterm modeline uygun olduğu tespit edilmiştir. Sonuç olarak, bentonitin sulu çözeltilerden nikel ve kadmiyum iyonlarının giderilmesinde etkili ve ekonomik bir adsorban olarak kullanılabileceği yargısına varılmıştır.
The preparation of the study was carried out to determine the removal of nickel and cadmium from the aqueous solutions of bentonite treatment by adsorption method. The experiments, where optimum removal conditions were presented, were carried out for two metals. The adsorption efficiency of adsorbent dosage, contact time, temperature and adsorbent size parameters were investigated. For the initial concentration of 0,1 mg / L (100 ppb), the optimal adsorbent dosage is 3 g / 25 mL for nickel removal and 1 g / 25 mL for cadmium. Adsorption equilibrium was reached in 30 chambers for nickel and cadmium removal. Maximum adsorption efficiency in two heavy metals at 40 ° C was achieved. The highest yield was obtained with 0.5 mm bentonite in terms of adsorbent size and> 2 mm in cadmium removal. The process was found to be in accordance with Langmuir isotherm model. As a result, it has been concluded that bentonite can be used as an effective and economical adsorbent to remove nickel and cadmium ions from aqueous solutions.
The preparation of the study was carried out to determine the removal of nickel and cadmium from the aqueous solutions of bentonite treatment by adsorption method. The experiments, where optimum removal conditions were presented, were carried out for two metals. The adsorption efficiency of adsorbent dosage, contact time, temperature and adsorbent size parameters were investigated. For the initial concentration of 0,1 mg / L (100 ppb), the optimal adsorbent dosage is 3 g / 25 mL for nickel removal and 1 g / 25 mL for cadmium. Adsorption equilibrium was reached in 30 chambers for nickel and cadmium removal. Maximum adsorption efficiency in two heavy metals at 40 ° C was achieved. The highest yield was obtained with 0.5 mm bentonite in terms of adsorbent size and> 2 mm in cadmium removal. The process was found to be in accordance with Langmuir isotherm model. As a result, it has been concluded that bentonite can be used as an effective and economical adsorbent to remove nickel and cadmium ions from aqueous solutions.
Açıklama
Anahtar Kelimeler
Bentonit, Nikel, Kadmiyum, Adsorpsiyon, Bentonite, Nickel, Cadmium, Heavy Metal Removal, Adsorption, Ağır Metal Giderimi
