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NaCl’ ÜN ÇEKİRDEKLENME KİNETİĞİNE AĞIR METAL SAFSIZLIKLARININ ETKİSİ

EFFECT OF HEAVY METALS IMPURITIES UPON NUCLEATION KINETICS OF NaCl

Journal Name:

  • Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2014

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, effects of heavy metal’s impurities (Pb2+, Fe3+) on nucleation kinetics of NaCl in crystallization medium were investigated. The tests were conducted by taking into account industrial production conditions of the salt (NaCl) and taking measurements of the setting period of the solution. In the study, where the tests were carried out in both pure medium and in the presence of impurities, it was observed that the stirring process increases the nucleation rate of NaCl. It was found that heavy metal impurities significantly reduce the nucleation rate and that this effect becomes more vivid with lead ions impurities (Pb2+). The study also found that the presence of seed crystal increases the nucleation rate. However; it was also clear that the negative effects imposed by the heavy metal impurities on nucleation still kept persisting.
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Abstract (Original Language): 
Bu çalışmada NaCl’ün çekirdeklenme kinetiği üzerine kristalizasyon ortamındaki ağır metal safsızlıklarının (Pb2+, Fe3+) etkisi incelenmiştir. Çalışmalar, NaCl’ün endüstriyel üretim şartları dikkate alınarak bekleme zamanı ölçümleri yapılarak gerçekleştirilmiştir. Saf ortamda ve safsızlıkların varlığında yürütülen deneylerde karıştırma işleminin NaCl’ün çekirdeklenme hızını artırdığı tespit edilmiştir. Ağır metal safsızlıklarının çekirdeklenme hızını önemli oranda düşürdüğü ve Pb2+ safsızlığı için söz konusu etkinin daha belirgin olduğu belirlenmiştir. Aşı kristali varlığının çekirdeklenme hızını artırdığı belirlenmiştir. Ancak, ağır metal varlığının çekirdeklenme hızı üzerindeki olumsuz etkisinin devam ettiği de tespit edilmiştir.
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