Characteristics of industrial and laboratory meat and bone meal ashes and their potential applications

JOURNAL OF HAZARDOUS MATERIALS

卷:150

Article

Coutand, Marie¹  Cyr, Martin¹  Deydier, Eric²  Guilet, Richard³  Clastres, Pierre¹ 

[1] INSA UPS EA 3027, Lab Mat & Durabilite Construct, F-31077 Toulouse, France

[2] Univ Toulouse 3, Lab Chim Inorgan & Sante, IUT, F-81104 Castres, France

[3] Univ Toulouse 3, Lab Genie Chim, UMR 5503, F-31106 Toulouse, France

关键词: meat and bone meal ash;    bottom ash;    fly ash;    calcium phosphate;    hydroxyapatite;    whitlockite;    chemical properties;    chemical composition;    heavy metals;    leaching;   

DOI  :  10.1016/j.jhazmat.2007.04.133

来源: Elsevier

【 摘 要 】

This paper reports the characterization of four meat and bone meal (MBM) ashes obtained from specific incineration (laboratory) and from co-incineration (industrial process). Three out of the four MBM ashes were mainly composed of calcium phosphates (hydroxyapatite and whitlockite). Their compositions (major and trace) were in the range for natural phosphate rocks. Trace element contents, including heavy metals, were below 0.6% and industrial ashes contained much more heavy metals than laboratory ash. The amounts of leached elements were low, especially for laboratory ash. According to the European classification of waste to be landfilled, the laboratory ash can be classified as an inert waste. Two industrial ashes are mostly inert. Only one ash is highly leachable and needs a stabilization treatment to be classified at least in the category of hazardous waste. It seems, from these results, that possibilities other than landfilling could be considered to give economic value to these ashes. (c) 2007 Elsevier B.V. All rights reserved.

【 授权许可】

Free