NDLI: Beyond the Salt Crust: On Combined Evaporation and Subflorescent Salt Precipitation in Porous Media

Content Provider	Springer Nature Link
Author	Nachshon, Uri Weisbrod, am
Copyright Year	2015
Abstract	The impact of salt precipitation, within or on top of porous media, on water evaporation from the media is an important issue with practical implications for agricultural practices, civil engineering and construction materials, the food industry and more. Even though the evaporation of saline solutions from porous media has been widely studied in recent years, there are still many uncertainties about the associated physical and chemical mechanisms. Moreover, most studies have focused on the impact of efflorescent salt precipitation on evaporation. This work focuses on subflorescent salt precipitation and its connection to evaporation from porous media. The different impacts of subflorescent and efflorescent salt precipitation on porous media evaporation are discussed, and the results of experiments that measured and quantified the impact of crystallization patterns on evaporation and porous media hydraulic conductivity are presented. A simple model was used to better understand the limiting factors that control liquid transport within porous media, with and without crystallized salts. The experimental results showed a major impact of efflorescent salt crust on evaporation, while for the subflorescent salt precipitation, the measured evaporation rates were similar to those measured for salt-free conditions. The model indicated that even though subflorescent-precipitated salt reduced the hydraulic conductivity of the medium by several orders of magnitude, it was not the limiting factor for evaporation as the diffusive vapor transport between the matrix surface and atmosphere was the slowest transport mechanism in the system, thus controlling evaporation rates.
Starting Page	295
Ending Page	310
Page Count	16
File Format	PDF
ISSN	01693913
Journal	Transport in Porous Media
Volume Number	110
Issue Number	2
e-ISSN	15731634
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-05-24
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Evaporation Subflorescent salt precipitation Hydraulic conductivity Soil clogging Geotechnical Engineering & Applied Earth Sciences Industrial Chemistry/Chemical Engineering Hydrology/Water Resources Civil Engineering Hydrogeology Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Catalysis

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

Effects of Grain and Pore Size on Salt Precipitation During Evaporation from Porous Media

Free-Flow–Porous-Media Coupling for Evaporation-Driven Transport and Precipitation of Salt in Soil

Heterogeneity Effects on Evaporation-Induced Halite and Gypsum Co-precipitation in Porous Media

Kinetic Approach to Model Reactive Transport and Mixed Salt Precipitation in a Coupled Free-Flow–Porous-Media System

Evaporation from Wavy Porous Surfaces into Turbulent Airflows

Drying of Porous Media

Thin Porous Media

Direct Hydraulic Parameter and Function Estimation for Diverse Soil Types Under Infiltration and Evaporation

Hydraulic Operating Conditions and Particle Concentration Effects on Physical Clogging of a Porous Medium

Beyond the Salt Crust: On Combined Evaporation and Subflorescent Salt Precipitation in Porous Media

Similar Documents

Effects of Grain and Pore Size on Salt Precipitation During Evaporation from Porous Media

Free-Flow–Porous-Media Coupling for Evaporation-Driven Transport and Precipitation of Salt in Soil

Heterogeneity Effects on Evaporation-Induced Halite and Gypsum Co-precipitation in Porous Media

Kinetic Approach to Model Reactive Transport and Mixed Salt Precipitation in a Coupled Free-Flow–Porous-Media System

Evaporation from Wavy Porous Surfaces into Turbulent Airflows

Drying of Porous Media

Thin Porous Media

Direct Hydraulic Parameter and Function Estimation for Diverse Soil Types Under Infiltration and Evaporation

Hydraulic Operating Conditions and Particle Concentration Effects on Physical Clogging of a Porous Medium

Beyond the Salt Crust: On Combined Evaporation and Subflorescent Salt Precipitation in Porous Media