Chapter 14 Carbonation of cement kiln dust

Document Type

Book Chapter

Source of Publication

Sustainable Utilization of Carbon Dioxide in Waste Management

Publication Date

1-1-2023

Abstract

The sources and characteristics of various types of ash and waste produced in the cement industry, such as CKD, cement bypass dust, ordinary Portland cement, and recycled concrete aggregate, are discussed. Current CKD utilization in civil works, geotechnical applications, roads and pavement structures, treatment of hazardous wastes, waste containment barriers, permeable reactive barriers for groundwater remediation, and wastewater neutralization are discussed. Also, the potential use of CKD for carbon sequestration is evaluated. Hydration of CKD and the newly formed hydrated products, such as hydrated lime [C–H], calcium silicate hydrates [C3S2H3], calcium aluminate hydrates [C3AH6], calcium aluminate trisulfate hydrate [C6AS3H32] or the calcium aluminate mono-sulfate hydrate [C4ASH18], are discussed. Also, CKD carbonation methods such as (a) Mohamed and El Gamal fluidization (MGF) process; (b) batch carbonation process; (c) column carbonation process; (d) rotating tube furnace carbonation process; (e) ultrasonic carbonation process; and (f) indirect carbonation, were discussed. Finally, CKD kinetic modeling, which describes the carbonation reaction, is discussed with emphasis on the type of carbonation reactor (static vs. dynamic).

ISBN

9780128234181

Publisher

Elsevier

First Page

529

Last Page

575

Disciplines

Environmental Engineering | Environmental Sciences

Keywords

Cement bypass dust (CBPD), Cement kiln dust (CKD), Indirect carbonation through chelating agents, Mohamed and El Gamal fluidization (MGF) process, Recycled concrete aggregate (RCA), Rotating packed bed (RPB), Unreacted shrinking core model (USCM)

Indexed in Scopus

no

Open Access

no

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