An Overview of Rare Earth Elements in Sewage Sludges and Their Ashes

Proceedings

Alonso, Manuela¹  Folgueras, M. Belén²  Folgueras, Juan R.³ 

[1] Author to whom correspondence should be addressed.;Department of Energy, University of Oviedo, School of Mining, Energy and Materials Engineering, Independencia 13, 33004 Oviedo, Spain;Presented at the 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment (IRCSEEME), Mieres, Spain, 25–27 July 2018

关键词: sewage sludge;    rare earth elements;    ashes;    earth’s crust;   

DOI  :  10.3390/proceedings2231462

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

In this work, data about REY concentrations in sewage sludges and their ashes have been analysed. The source of REY in them is mainly geogenic, which is why sludges from regions like China and Brazil have higher concentrations. Thus, the combustion or co-combustion of sewage sludge as a way of recovery its energy potential and, secondarily, the processing of their ashes in order to obtain REY may be interesting, in certain regions, depending on the techno-economic and environmental context of the moment.

【 授权许可】

CC BY