NDLI: Kinetic study of the drying process of clay bricks

Content Provider	Springer Nature Link
Author	Gualtieri, A. F. Ricchi, A. Lassinantti Gualtieri, M. Maretti, S. Tamburini, M.
Copyright Year	2015
Abstract	This work deals with the drying kinetics of three red clays with different mineralogical composition and grain size distribution used for the production of clay bricks. The kinetic study was performed using thermo-gravimetry (TG) in both non-isothermal and isothermal mode in the 50–200 °C range. To the knowledge of the authors, this is the first time that the drying process of clay bricks is studied using the TG method to present a general model at molecular scale of the phenomenon. The observed drying mechanism is composed of a fast initial step and a slow final step. The former is characterized by an Avrami-like mechanism with an Avrami coefficient n $_{1}$ comprised between 1 and 2. This kinetic parameter indicates a diffusive control in three dimensions with instantaneous or deceleratory nucleation and refers to desorption of adsorbed water from the surface of all mineral phases. The second step is also characterized by an Avrami-like mechanism with n $_{2}$ = 1 and points to a diffusion-controlled reaction in two dimensions, with instantaneous nucleation. This step involves dehydration of plastic clay minerals such as illite, smectite and IS through diffusion of water molecules within the two-dimensional interlayer. The apparent activation energies related to the first fast mechanism have similar values (<32 kJ mol$^{−1}$) for all samples. The apparent activation energy E $_{a}$ for the second slower step is dependent upon the mineralogical composition and is >35 kJ mol$^{−1}$. The dependency of the apparent activation energies on grain size distribution and sample mass was also assessed.
Starting Page	153
Ending Page	167
Page Count	15
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	123
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-07-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Clay brick Rietveld Drying Kinetics Arrhenius Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Thermal transformation kinetics of a kaolinitic clay

Isoconversional kinetic analysis of resol-clay nanocomposites

Study on kinetics of combustion of brick-shaped carbonaceous materials

Non-isothermal unfolding/denaturing kinetics of egg white protein

Freeze Drying Kinetics of Sucrose-NaCl-Protein Aqueous Mixtures

Kinetic analysis of the process of melamine pyrophosphate synthesis

Study of Kinetic Parameters of Reject/Clay/Composites by Thermal Analysis

Single-step kinetics approximation employing non-Arrhenius temperature functions

Thermal analysis of drying process

Kinetic study of the drying process of clay bricks

Similar Documents

Thermal transformation kinetics of a kaolinitic clay

Isoconversional kinetic analysis of resol-clay nanocomposites

Study on kinetics of combustion of brick-shaped carbonaceous materials

Non-isothermal unfolding/denaturing kinetics of egg white protein

Freeze Drying Kinetics of Sucrose-NaCl-Protein Aqueous Mixtures

Kinetic analysis of the process of melamine pyrophosphate synthesis

Study of Kinetic Parameters of Reject/Clay/Composites by Thermal Analysis

Single-step kinetics approximation employing non-Arrhenius temperature functions

Thermal analysis of drying process

Kinetic study of the drying process of clay bricks