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Incinerator Bottom Ash: Difference between revisions
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Following the combustion process non-combustible ash of varying particle size is produced, often containing mineral material and metals. The ash which falls to the bottom of the process is typically dry and dusty and operators will need to ensure that it is appropriately stored in covered containers to prevent emissions to air<ref name="foo" />. | Following the combustion process non-combustible ash of varying particle size is produced, often containing mineral material and metals. The ash which falls to the bottom of the process is typically dry and dusty and operators will need to ensure that it is appropriately stored in covered containers to prevent emissions to air<ref name="foo" />. | ||
Currently, over half a million tonnes of IBA goes to landfill each year in England and Wales. However, as recovery processes have improved this material can now be processed and recycled back as [[Secondary Aggregate]] into applications such as aggregate replacement for sub-base road construction, bulk fill, concrete block manufacture or concrete grouting<ref name="foo" />. When recycled back to an aggregate it is known as '''[[Incinerator Bottom Ash Aggregate]]''' ([[IBAA]]). | Currently, over half a million tonnes of IBA goes to landfill each year in England and Wales. However, as recovery processes have improved this material can now be processed and recycled back as [[Secondary Aggregate]] into applications such as aggregate replacement for sub-base road construction, bulk fill, concrete block manufacture or concrete grouting<ref name="foo" />. When recycled back to an aggregate it is known as '''[[Incinerator Bottom Ash Aggregate]]''' ([[IBAA]]).The use of [[IBAA]] in construction has specific controls that need to be applied<ref>https://www.gov.uk/government/publications/using-unbound-incinerator-bottom-ash-aggregate-ibaa-in-construction-activities-rps-247</ref>. | ||
The graph below displays the incinerator bottom ash produced as a percentage of the total [[residual waste]] feedstock being processed by UK [[Energy from Waste]] facilities, and how this has changed over recent years. | The graph below displays the incinerator bottom ash produced as a percentage of the total [[residual waste]] feedstock being processed by UK [[Energy from Waste]] facilities, and how this has changed over recent years. | ||
[[File:IBA production from EfWs.png|800px|frame|center|IBA produced from Energy from Waste processes, Graph derived from Tolvik, 2019<ref>Tolvik Consulting, 2019. [https://www.tolvik.com/wp-content/uploads/2019/06/Tolvik-EfW-Statistics-2018-Report_July-2019-final-amended-version.pdf UK Energy from Waste Statistics – 2018. Gloucestershire.][online] </ref>.]] | [[File:IBA production from EfWs.png|800px|frame|center|IBA produced from Energy from Waste processes, Graph derived from Tolvik, 2019<ref>Tolvik Consulting, 2019. [https://www.tolvik.com/wp-content/uploads/2019/06/Tolvik-EfW-Statistics-2018-Report_July-2019-final-amended-version.pdf UK Energy from Waste Statistics – 2018. Gloucestershire.][online] </ref>.]] | ||
==References== | ==References== | ||
<references /> | <references /> | ||