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Assessment of Biomass Ash Applications in Soil and Cement Mortars by Lorenzo Tosti; André van Zomeren; Jan R. Pels; Joris J. Dijkstra; Rob N.J. Comans is a Environmental Science article available to read on EtoBox.

What is Assessment of Biomass Ash Applications in Soil and Cement Mortars about?

The pH-dependent availability and leaching of major and trace elements was investigated for a wide range of biomass ash from different fuels and conversion technologies. A technical and environmental assessment of selected biomass ash for application in soil or cement mortars was performed, using both the total content and leaching of elements. A large variation in biomass ash composition, yet consistent pH dependent leaching patterns were observed for most elements and conversion technologies. Chromium showed a distinct behaviour which was hypothesized to reflect redox conditions during conversion of the biomass. The leaching based approach was found to provide a more realistic assessment of the availability of desired (i.e. nutrients) and undesired elements (i.e. contaminants) in soil systems. When applied to a reference soil at a rate of 2% by weight, the selected biomass ash increased the concentration of particularly Cr, Mo and Zn in soil solution to a level of concern. For cement applications, the release of Ba, Cr and Mo can become of concern during the second life stage, but the release was not attributed to the included biomass ash. Both soil and cement matrixes were found

Who reads Assessment of Biomass Ash Applications in Soil and Cement Mortars?

Author

Lorenzo Tosti; André van Zomeren; Jan R. Pels; Joris J. Dijkstra; Rob N.J. Comans

Publisher

Elsevier BV

Published

2019

Language

EN

Field

Environmental Science (Physical Sciences)