Publication detail

STABILIZATION OF FLY-ASH CONTAINING HEAVY METALS BY ALKALI ACTIVATION

KOPLÍK, J. KALINA, L. MÁSILKO, J. ŠOUKAL, F.

Original Title

STABILIZATION OF FLY-ASH CONTAINING HEAVY METALS BY ALKALI ACTIVATION

English Title

STABILIZATION OF FLY-ASH CONTAINING HEAVY METALS BY ALKALI ACTIVATION

Type

conference paper

Language

en

Original Abstract

The immobilization of waste materials is receiving increasing attention from scientist all over the world. Alkali activation of fly ash or blast furnace slag is a method, that successfully stabilizes these waste materials in a solidified matrix. Fly ash (FA) from Czech power plant Počerady and blast furnace slag (BFS) from Ostrava contain except the mains compounds also small amount of heavy metals - Ba2+, Ni2+, Zn2+, Cu2+, Cr. The aim of this work is to find out the ability of aluminosilicate matrix (ASM) and matrix reinforced by wollastonite micro-fibre to stabilize and immobilize heavy metals, which originate from raw materials. Amount of heavy metals in raw materials was investigated by XRF. Phase composition was determined by XRD. The ability of matrix to fix and immobilize heavy metals was investigated by leaching tests. These tests were based on the law 383/2001 Sb. and ČSN EN - 12457- 4. The concentration of heavy metals in eluate was analysed by ICP-MS. The addition of wollastonite improved the ability of alkali activated AMSs to fix Ba, Zn and Ni. Fixation of Cu and Cr wasn't influenced by addition of wollastonite

English abstract

The immobilization of waste materials is receiving increasing attention from scientist all over the world. Alkali activation of fly ash or blast furnace slag is a method, that successfully stabilizes these waste materials in a solidified matrix. Fly ash (FA) from Czech power plant Počerady and blast furnace slag (BFS) from Ostrava contain except the mains compounds also small amount of heavy metals - Ba2+, Ni2+, Zn2+, Cu2+, Cr. The aim of this work is to find out the ability of aluminosilicate matrix (ASM) and matrix reinforced by wollastonite micro-fibre to stabilize and immobilize heavy metals, which originate from raw materials. Amount of heavy metals in raw materials was investigated by XRF. Phase composition was determined by XRD. The ability of matrix to fix and immobilize heavy metals was investigated by leaching tests. These tests were based on the law 383/2001 Sb. and ČSN EN - 12457- 4. The concentration of heavy metals in eluate was analysed by ICP-MS. The addition of wollastonite improved the ability of alkali activated AMSs to fix Ba, Zn and Ni. Fixation of Cu and Cr wasn't influenced by addition of wollastonite

Keywords

heavy metals, fixation, wollastonite reinforcement

RIV year

2010

Released

21.09.2010

Publisher

Aalborg University

Location

Aalborg

ISBN

87-91606-20-9

Book

12th International Inorganic-Bonded Fiber Composites Conference

Edition number

1

Pages from

311

Pages to

315

Pages count

5

Documents

BibTex


@inproceedings{BUT35157,
  author="Jan {Koplík} and Lukáš {Kalina} and Jiří {Másilko} and František {Šoukal}",
  title="STABILIZATION OF FLY-ASH CONTAINING HEAVY METALS BY ALKALI ACTIVATION",
  annote="The immobilization of waste materials is receiving increasing attention from scientist all over the world. Alkali activation of fly ash or blast furnace slag is a method, that successfully stabilizes these waste materials in a solidified matrix. Fly ash (FA) from Czech power plant Počerady and blast furnace slag (BFS) from Ostrava contain except the mains compounds also small amount of heavy metals - Ba2+, Ni2+, Zn2+, Cu2+, Cr. 
The aim of this work is to find out the ability of aluminosilicate matrix (ASM) and matrix reinforced by wollastonite micro-fibre to stabilize and immobilize heavy metals, which originate from raw materials. Amount of heavy metals in raw materials was investigated by XRF. Phase composition was determined by XRD. The ability of matrix to fix and immobilize heavy metals was investigated by leaching tests. These tests were based on the law 383/2001 Sb. and ČSN EN - 12457- 4. The concentration of heavy metals in eluate was analysed by ICP-MS. The addition of wollastonite improved the ability of alkali activated AMSs to fix Ba, Zn and Ni. Fixation of Cu and Cr wasn't influenced by addition of wollastonite",
  address="Aalborg University",
  booktitle="12th International Inorganic-Bonded Fiber Composites Conference",
  chapter="35157",
  institution="Aalborg University",
  year="2010",
  month="september",
  pages="311--315",
  publisher="Aalborg University",
  type="conference paper"
}