Initial Study on Phytoextraction for Recovery of Metals from Sorted and Aged Waste-to-Energy Bottom Ash

Sorted and aged bottom ash from Waste-to-Energy plants, i.e., MIBA (the Mineral fraction of Incinerator Bottom Ash) are potential source of metals that could be utilized to meet the increased demand from society. In this work, sunflowers (<i>Helianthus annuus</i>) and rapeseed (<i>...

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Main Authors: Karin Karlfeldt Fedje, Viktoria Edvardsson, David Dalek
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:Soil Systems
Subjects:
Online Access:https://www.mdpi.com/2571-8789/5/3/53
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author Karin Karlfeldt Fedje
Viktoria Edvardsson
David Dalek
author_facet Karin Karlfeldt Fedje
Viktoria Edvardsson
David Dalek
author_sort Karin Karlfeldt Fedje
collection DOAJ
description Sorted and aged bottom ash from Waste-to-Energy plants, i.e., MIBA (the Mineral fraction of Incinerator Bottom Ash) are potential source of metals that could be utilized to meet the increased demand from society. In this work, sunflowers (<i>Helianthus annuus</i>) and rapeseed (<i>Brassica napus</i>) were cultivated in conventional MIBA to evaluate the possibility for phytoextraction, mainly of Zn, during the period of one cultivation season in the Nordic climate. The results show that metal extraction from MIBA using rapeseed and sunflowers is workable but that neither of the used plants is optimal, mainly due to the inhibited root development and low water- and nutrient-holding capacities of MIBA. The addition of fertilizer is also important for growth. There was a simultaneous accumulation of numerous metals in both plant types, and the highest metal content was generally found in the roots. Calculations indicated that the ash from rapeseed root incineration contained about 2% Zn, and the contents of Co, Cu, and Pb were comparable to those in workable ores. This initial study shows that cultivation in and phytoextraction on MIBA is possible, and that the potential for increased metal extraction is high.
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spelling doaj.art-6a3a8f618e4a47939723d6f364bc2b572023-11-22T15:17:53ZengMDPI AGSoil Systems2571-87892021-08-01535310.3390/soilsystems5030053Initial Study on Phytoextraction for Recovery of Metals from Sorted and Aged Waste-to-Energy Bottom AshKarin Karlfeldt Fedje0Viktoria Edvardsson1David Dalek2Department of Architecture and Civil Engineering, Division of Water Environment Technology, Chalmers University of Technology, SE-412 96 Gothenburg, SwedenRecovery and Management, Renova AB, Box 156, SE-401 22 Gothenburg, SwedenRecovery and Management, Renova AB, Box 156, SE-401 22 Gothenburg, SwedenSorted and aged bottom ash from Waste-to-Energy plants, i.e., MIBA (the Mineral fraction of Incinerator Bottom Ash) are potential source of metals that could be utilized to meet the increased demand from society. In this work, sunflowers (<i>Helianthus annuus</i>) and rapeseed (<i>Brassica napus</i>) were cultivated in conventional MIBA to evaluate the possibility for phytoextraction, mainly of Zn, during the period of one cultivation season in the Nordic climate. The results show that metal extraction from MIBA using rapeseed and sunflowers is workable but that neither of the used plants is optimal, mainly due to the inhibited root development and low water- and nutrient-holding capacities of MIBA. The addition of fertilizer is also important for growth. There was a simultaneous accumulation of numerous metals in both plant types, and the highest metal content was generally found in the roots. Calculations indicated that the ash from rapeseed root incineration contained about 2% Zn, and the contents of Co, Cu, and Pb were comparable to those in workable ores. This initial study shows that cultivation in and phytoextraction on MIBA is possible, and that the potential for increased metal extraction is high.https://www.mdpi.com/2571-8789/5/3/53WtE bottom ashphytoextractionzinc recoveryrapeseedsunflowerMIBA
spellingShingle Karin Karlfeldt Fedje
Viktoria Edvardsson
David Dalek
Initial Study on Phytoextraction for Recovery of Metals from Sorted and Aged Waste-to-Energy Bottom Ash
Soil Systems
WtE bottom ash
phytoextraction
zinc recovery
rapeseed
sunflower
MIBA
title Initial Study on Phytoextraction for Recovery of Metals from Sorted and Aged Waste-to-Energy Bottom Ash
title_full Initial Study on Phytoextraction for Recovery of Metals from Sorted and Aged Waste-to-Energy Bottom Ash
title_fullStr Initial Study on Phytoextraction for Recovery of Metals from Sorted and Aged Waste-to-Energy Bottom Ash
title_full_unstemmed Initial Study on Phytoextraction for Recovery of Metals from Sorted and Aged Waste-to-Energy Bottom Ash
title_short Initial Study on Phytoextraction for Recovery of Metals from Sorted and Aged Waste-to-Energy Bottom Ash
title_sort initial study on phytoextraction for recovery of metals from sorted and aged waste to energy bottom ash
topic WtE bottom ash
phytoextraction
zinc recovery
rapeseed
sunflower
MIBA
url https://www.mdpi.com/2571-8789/5/3/53
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AT viktoriaedvardsson initialstudyonphytoextractionforrecoveryofmetalsfromsortedandagedwastetoenergybottomash
AT daviddalek initialstudyonphytoextractionforrecoveryofmetalsfromsortedandagedwastetoenergybottomash