Phosphorus Transfer in the Ash through Acid or AlkaliExtraction Processes

作     者：Masaaki Takahashi Yukimasa Takemoto Eiji Yuki 

作者机构：Yokkaichi UniversityResearch Laboratory on Environmental TechnologyKayo-cho 1200YokkaichiMieJapan Mie Chuo Kaihatsu Co.LtdHachiya 4713YonoIgaMie 518-1152Japan 

出 版 物：《材料科学与工程（中英文A版）》 (Journal of Materials Science and Engineering A)

年 卷 期：2020年第10卷第1期

页      面：24-29页

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：The authors wish to express their appreciation to Dr. Eric Bray (Professor of Yokkaichi University) for his advice on making the article. The authors also express their appreciation to the Hinaga Wastewater Treatment Center (Yokkaichi City Government  Waterworks and Sewage Bureau) offering us the ash 

主　　题：Phosphorus recovery rate sewage sludge extraction method. 

摘      要：In order to find the best method of the phosphorus recovery, some kinds of the phosphorus recovery methods were applied using the same raw material. The acid treatment shows the highest recovery performance, on the contrary, the alkali treatment indicates the lowest recovery rate. The recovery rate was improved by the application of the heat treatment or hydrothermal method. In the acid treatment, the recovered phosphorus is mainly composed of aluminum phosphate, conversely, in alkali treatment, recovered phosphorus was mainly composed of sodium phosphate containing a small amount of aluminum. But the aluminum content in the phosphorus decreased by introduction of the heat treatment or hydrothermal method.