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Mineral Beneficiation and Processing of Coal Read chapter Read first chapter

2021 | OriginalPaper | Chapter

2. Natural Dispersant in Coal Water Slurry Stabilization

Authors : Debadutta Das, Prativa Kar, Bijnyan Ranjan Das, Ranjan Kumar Mohapatra, Subrata Narayan Das, Pankaj Kumar Parhi, Umakanta Behera

Published in: Clean Coal Technologies

Publisher: Springer International Publishing

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Abstract

The stabilization of a coal-water slurry, which is a concentrated mixture of powdered coal and water, is popularly known as coal-water liquid fuel, and the maintenance of its suitable rheological characteristics necessitates the production of well-dispersed solid coal particles in water. The development of the chemical dispersant or natural dispersant is highly essential for coal water slurry (CWS) stabilization as CWS is gaining importance due to versatility and simplicity of technology involved during the process. This chapter describes the preparation and stabilization CWS by using two natural surfactant. Detail about isolation and characterization of natural surfactant Sapindous laurifolia and Sapindous mukorossi has been discussed. The non-Newtonian nature of the slurry is discussed by variation of coal concentration, natural dispersant concentration, temperature, pH and surface charge of the slurry. Interaction between coal surface and saponin of natural dispersant has been discussed by a suitable mechanism.

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Metadata
Title
Natural Dispersant in Coal Water Slurry Stabilization
Authors
Debadutta Das
Prativa Kar
Bijnyan Ranjan Das
Ranjan Kumar Mohapatra
Subrata Narayan Das
Pankaj Kumar Parhi
Umakanta Behera
Copyright Year
2021
Book
Clean Coal Technologies

Print ISBN: 978-3-030-68501-0

Electronic ISBN: 978-3-030-68502-7

Copyright Year: 2021

DOI
https://doi.org/10.1007/978-3-030-68502-7_2