{"title":"Pilot plant study on ammonia and water recycling in the nitrogen industry","authors":"Lucjan Pawłowski","doi":"10.1016/0304-3967(79)90036-2","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper the role of the nitrogen industry in environmental pollution is characterized, and an ion exchange method for purification of waste water formed in the process of ammonia synthesis is proposed. The process consists of sorption of ammonium ions in the bed of a strong acid cation exchanger and regeneration with 50% and 33% solutions of sulphuric acid. It is shown that the ammonium sulphate obtained during regeneration can be used in the production of saltpetre. Addition of regeneration effluent to saltpetre increases the durability of saltpetre granules. The optimum dose is 1.6 eq H<sub>2</sub> SO<sub>4</sub>/dm<sup>3</sup> cation exchanger without significant difference in regeneration efficiency between 33% and 50% H<sub>2</sub>SO<sub>4</sub>. It appears this method has considerable economical advantages.</p></div>","PeriodicalId":101078,"journal":{"name":"Resource Recovery and Conservation","volume":"4 1","pages":"Pages 43-57"},"PeriodicalIF":0.0000,"publicationDate":"1979-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3967(79)90036-2","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Resource Recovery and Conservation","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0304396779900362","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
In this paper the role of the nitrogen industry in environmental pollution is characterized, and an ion exchange method for purification of waste water formed in the process of ammonia synthesis is proposed. The process consists of sorption of ammonium ions in the bed of a strong acid cation exchanger and regeneration with 50% and 33% solutions of sulphuric acid. It is shown that the ammonium sulphate obtained during regeneration can be used in the production of saltpetre. Addition of regeneration effluent to saltpetre increases the durability of saltpetre granules. The optimum dose is 1.6 eq H2 SO4/dm3 cation exchanger without significant difference in regeneration efficiency between 33% and 50% H2SO4. It appears this method has considerable economical advantages.
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