Title: Fly ash from a Belgian stoker-type municipal solid waste incinerator

Authors: Mengmei Zhang; Junhong Liao; Alfons Buekens; Xiaodong Li

Addresses: State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, China ' ENN Ubiquitous Energy Network Technology Co., Ltd., Shanghai, China ' State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, China; Formerly of: Vrije Universiteit Brussel, Brussels, Belgium ' State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, China

Abstract: This study establishes some salient characteristics of fly ash from municipal solid waste incineration by combining various instrumental analytical techniques (SEM-EDS, XRD and XRF, etc.) while analysing size-classified fractions of high-temperature (HT) and baghouse (BH) dust. First, the two samples were sieved in eight (HT) or six (BH) size fractions and these were separately analysed for PCDD/F, PCB and PAH. These two samples, showing distinct differences from each other, were collected from a small MSWI stoker plant in Belgium with frequent operational problems. The BH sample presented more homogeneity than the HT sample. A growing concentration of heavy metals was observed with falling size of particles. The loads of PCDD/F and PCB in the BH sample are 1-2 orders of magnitude larger than those in HT samples. High internal correlation was found for the contents of PCB and PCDD/F and even higher for dl-PCB and PCDD/F.

Keywords: fly ash; FA; municipal solid waste incineration; MSWI; polychlorinated dibenzo-p-dioxins; PCDD; polychlorinated dibenzofurans; PCDF; polychlorinated biphenyls; PCB; polycyclic aromatic hydrocarbons; PAH.

DOI: 10.1504/IJEP.2018.097860

International Journal of Environment and Pollution, 2018 Vol.63 No.4, pp.246 - 270

Available online: 14 Feb 2019 *

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