ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This study was conducted to synthesize zeolitic materials using sewage sludge by molten-saltmethod the effective method was investigate to reduce the thermal treatment time by adding zeoliteseed and excessive sodium hydroxide. To synthesis zeolitic materials, sewage sludge was used as Siand Al sources, also Na2SO4 and NaOH were added as stabilizer and mineralizer respectively.Sewage sludge was prepared by calcination at 550°C/3hr to remove organic materials. As a result ofthermal treatment at 950°C for 6~24hrs, more than 18 hours was required to synthesize zeoliticmaterials without adding zeolite seed. On the other hand, it is observed that hydroxyl-sodalite wassynthesized in 9 hours thermal treatment and Na-P1 also in 12 hours when zeolite seed was added,but no other differences were observed when excessive sodium hydroxide was added. Consequently,the overall reaction time required could be reduced by adding zeolite seed and changing thermaltreatment temperature. However, addition of NaOH does not show significant effect on thereduction of zeolite synthesis time
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.569.329.pdf
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