Title:
Examination of Ligneous Biomass Polluted with Heavy Metal
Author(s):
Kovacs, H., Tóth, P., Szemmelveisz, K.
Document(s):
Paper
Abstract:
Environmental remediation of the polluted industrial sites that became vacant because of industrial restructuring is an economic interest. One of the ways to achieve this is phytoremediation. Planting biomass on these fields results in -through their nutrient and water uptake -the accumulation of the heavy metal content of the soil in the plants, the biomass therefore becomes polluted. Before the utilization of these plants as fuels, the combustion conditions must be thoroughly examined. After determining the heavy metal content and botanical characteristics of the plants harvested from the brownfield sites, the possibilities of energetic utilization were examined using wattle, oak, birch, poplar and pine pellet samples. The goals of the measurements include the determination of the combustion characteristics of these samples and the examination of the formed burning residue (ash). The combustion characteristics of these samples include measurement of moisture, volatiles, ash, chemical composition and heating values. The potential ways of disposal of the combustion residues formed during large-scale fuel burning are determined by the leaching properties of the ash, therefore chemical examinations have been conducted. The results of the examinations prove that the biomass samples possess good combustion properties. The solid residue formed during the combustion (ash, slag) should be treated as hazardous waste because of its heavy metal content. The disposal of the ash or slag therefore must be done in accordance with legal regulations.
Keywords:
biomass, combustion, heavy metals, pellets, ash, heavy metal content, ligneous
Topic:
Thermochemical conversion - Combustion and co-combustion
Subtopic:
Combustion and co-combustion for large utility and industrial scale applications
Event:
18th European Biomass Conference and Exhibition
Session:
VP2.4.2
Pages:
1122 - 1127
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-VP2.4.2
Price:
FREE
