Title:
Practical Methods for Reducing Chromium(VI) in Ashes from Biomass Heating Plants
Author(s):
Bachmaier, H., Hartmann, H.
Document(s):
Paper
Abstract:
This study examines methods to reduce chromium(VI) in ashes from biomass heating plants in order to enable a safe reuse as fertilizer. Treatments included the addition of water, iron sulfate, and mixture with compost at varying moisture levels. A 20 % moisture content reduced chromium(VI) by 74 %, while 30 % moisture achieved near-complete degradation. Adding iron sulfate and compost accelerated reductions, even at low moisture levels. These simple treatments offer effective, scalable solutions for an environmentally safe ash management.
Keywords:
heavy metals, recycling, upgrading, ashes, biofertilisers
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Gasification for power, CHP and polygeneration
Event:
33rd European Biomass Conference and Exhibition
Session:
4BV.1.18
Pages:
738 - 740
ISBN:
978-88-89407-25-7
Paper DOI:
10.5071/33rdEUBCE2025-4BV.1.18
Price:
FREE
