Publication detail

Study of the elemental composition of fly ash and bottom ash formed after the combustion of alternative lignocellulosic fuels

NÁBĚLEK, J. DIVIŠ, P. LACHMAN, J. KALIVODOVÁ, M.

Original Title

Type

abstract

Language

English

Original Abstract

Biomass energy is attracting more and more attention worldwide because it is a potentially CO2 neutral and renewable energy source. Direct combustion is the conventional and most common way in which biomass is used to generate energy. The ash produced during the burning of lignocellulosic fuels consists of two main parts: fly ash and bottom ash. Fly ash is the lightest-weight component. It rises with the flue gases and is captured by a boiler or incinerator’s air contaminant control equipment. Bottom ash is the material that falls to the bottom of the burner unit. Depending on the technology, bottom ash can be of ash consistency or often is a semi-solid slag material [1]. The chemical characteristics of ash remaining after biomass burning depend on the types and quality of the fuels burned and the operating conditions and technology of the biomass facility. Although burning of lignocellulosic fuels produces ash that is "cleaner" than coal-derived ash or municipal solid waste incinerator ash, the characteristics of this ash can be a concern for human health or the environment [2]. In this study elemental composition of fly and bottom ash produced during burning of sunflower, corn biomass and spruce wood under different conditions was investigated. Fly ash was captured on filters and together with the bottom ash they were mineralized in a microwave oven using nitric acid and hydrogen peroxide. Subsequently, the content of Cd, Tl, Sb, As, Pb, Cr, Co, Cu, Mn, Ni, V, Al, B, Ca, Fe, K, Mg, Na, P and Zn was determined in all samples with the use of ICP-MS and ICP-OES techniques. Based on the results, the possible use of bottom ash produced during burning of individual types of biomasses as fertilizer was considered, and the possible risk of environmental pollution by metals in the emerging fly ash was assessed.

Keywords

fly ash, bottom ash, sunflower biomass, corn biomass, spruce wood, ICP-MS, ICP-OES

Authors

NÁBĚLEK, J.; DIVIŠ, P.; LACHMAN, J.; KALIVODOVÁ, M.

Released

30. 11. 2022

Publisher

Vysoké učení technické v Brně, Fakulta chemická

Location

Purkyňova 464/118, 612 00 Brno

ISBN

978-80-214-6117-8

Book

Studentská odborná konference Chemie je život 2022 Sborník abstraktů

Edition

první

Pages from

Pages to

Pages count

BibTex

@misc{BUT182159,
  author="Jakub {Nábělek} and Pavel {Diviš} and Jakub {Lachman} and Markéta {Kalivodová}",
  title="Study of the elemental composition of fly ash and bottom ash formed after the combustion of alternative lignocellulosic fuels",
  booktitle="Studentská odborná konference Chemie je život 2022
Sborník abstraktů",
  year="2022",
  series="první",
  pages="43--44",
  publisher="Vysoké učení technické v Brně, Fakulta chemická",
  address="Purkyňova 464/118, 612 00 Brno",
  isbn="978-80-214-6117-8",
  note="abstract"
}