Decomposition of Municipal Sludge by Supercritical Water Oxidation

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Akio Kodama¹  Motonobu Goto¹  Satoshi Kawajiri¹  Takatsugu Nada¹  Tsutomu Hirose¹ 

[1] Department of Applied Chemistry and Biochemistry, Kumamoto University

关键词: Supercritical Water Oxidation;    Hydrogen Peroxide;    Municipal Excess Sludge;    Total Organic Carbon;    Organic Acid;    Ammonium Ion;   

DOI  :  10.1252/jcej.30.813

来源: Maruzen Company Ltd

【 摘 要 】

References(15)Cited-By(21)Supercritical water oxidation was used to break down municipal excess sludge. The reaction was carried out in a batch reactor with hydrogen peroxide as an oxidant in the temperature range of 473 K–873 K. The reaction products were analyzed in terms of total organic carbon (TOC), organic acids and ammonium ion. TOC decreases with temperature and oxidant amount. Acetic acid and ammonia are detected as major refractory intermediates in the product. When more than the stoichiometric demand of oxidant is used, organic carbon in liquid phase is almost completely destroyed. Complete destruction of ammonia produced during the reaction requires higher temperatures than that of acetic acid.

【 授权许可】

Unknown