Kinetic modeling on CO2 capture using basic oxygen furnace slag coupled with cold-rolling wastewater in a rotating packed bed

E. E. Chang, Tse Lun Chen, Shu Yuan Pan, Yi Hung Chen, Pen Chi Chiang

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

In this study, direct and indirect carbonation of basic oxygen furnace slag (BOFS) coupled with cold-rolling wastewater (CRW) was carried out via a rotating packed bed (RPB). The solid products were qualitatively characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) and quantitatively analyzed with thermogravimetric analysis (TGA). The leachate was analyzed with inductively coupled plasma-optical emission spectroscopy (ICP-OES). The results indicate that the maximum achievable carbonation conversion (MACC) of BOFS was 90.7%, corresponding to a capture capacity of 0.277g CO2/g of BOFS, by direct carbonation with CRW under a rotation speed of 750rpm at 30°C for 20min. In addition, CO2 mass balance among the gas, liquid, and solid phases within an RPB was well-developed, with an error less than 10%, to confirm the actual CO2 capture capacity of BOFS with precision and accuracy. Furthermore, a reaction kinetic model based on mass balance was established to determine the reaction rate constant for various liquid agents (CRW and pure water). It was concluded that co-utilization of alkaline wastes including BOFS and CRW via the RPB is a novel approach for both enhancing CO2 capture capacity and reducing the environmental impacts of alkaline wastes.

Original languageEnglish
Pages (from-to)937-946
Number of pages10
JournalJournal of Hazardous Materials
Volume260
DOIs
Publication statusPublished - Sep 15 2013

Fingerprint

Basic oxygen converters
Cold rolling
Packed beds
Waste Water
slag
Slags
Wastewater
Carbonation
Oxygen
wastewater
kinetics
oxygen
Kinetics
modeling
mass balance
Waste utilization
Optical emission spectroscopy
liquid
Liquids
Inductively coupled plasma

Keywords

  • Accelerated carbonation
  • Mass balance
  • Mass transfer coefficient
  • Material balance
  • Reaction rate constant

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Kinetic modeling on CO2 capture using basic oxygen furnace slag coupled with cold-rolling wastewater in a rotating packed bed. / Chang, E. E.; Chen, Tse Lun; Pan, Shu Yuan; Chen, Yi Hung; Chiang, Pen Chi.

In: Journal of Hazardous Materials, Vol. 260, 15.09.2013, p. 937-946.

Research output: Contribution to journalArticle

Chang, E. E. ; Chen, Tse Lun ; Pan, Shu Yuan ; Chen, Yi Hung ; Chiang, Pen Chi. / Kinetic modeling on CO2 capture using basic oxygen furnace slag coupled with cold-rolling wastewater in a rotating packed bed. In: Journal of Hazardous Materials. 2013 ; Vol. 260. pp. 937-946.
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