文章基本信息

标题：ZEOLITIZATION OF SEWAGE SLUDGE ASH WITH A FUSION METHOD
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作者：Jolanta Latosińska
期刊名称：Inżynieria Ekologiczna
印刷版ISSN：2081-139X
电子版ISSN：2392-0629
出版年度：2016
卷号：17
期号：5
页码：138-146
DOI：10.12911/22998993/65463
出版社：Polish Society of Ecological Engineering (PTIE)
摘要：The study shows the results of zeolitization of municipal sewage sludge ash with the indirect fusion method followed by a hydrothermal method.The zeolitization of sewage sludge ash was conducted at the melting temperature of 550°C and the melting time of 60 minutes, crystallization temperatures of 60°C and 90°C, crystallization time of 6 hours and the SSA:NaOH ratio of 1:1.8; 1:1.4.The research of modified sewage sludge ashes included the observation of changes of ash particles surface and the identification of crystalized phases.The zeolitization of sewage sludge ash at the ratio of SSA:NaOH 1.0:1.4 did not cause the formation of zeolite phases.On the other hand, the zeolitization at the ratio of SSA:NaOH 1.0:1.8 resulted in the formation of desired zeolite phases such as zeolite Y (faujasite) and hydroxysodalite.The presented method of sewage sludge ash zeolitization allows to obtain highly usable material.Synthesized zeolites may be used as adsorbents and ion exchangers.They can be potentially used to remove heavy metals as well as ammonia from water and wastewater.
关键词：sewage sludge ash ; zeolitization ; fusion method ; faujasite ; hydroxysodalite