Green Production of Potassium Sulfate by Hydrothermal Carbonization of Carrageenan-Reference-Cited by-同舟云学术

Green Production of Potassium Sulfate by Hydrothermal Carbonization of Carrageenan

Published:2020 Issue:12 Volume:32 Page:3105-3108
ISSN:0975-427X
Container-title:Asian Journal of Chemistry
language:en
Short-container-title:Asian J. Chem.

Author:

Bantang Jose Paolo O.¹,Camacho Drexel H.²

Affiliation:

1. 1Chemistry Department, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines 2Chemistry Department, Technological University of the Philippines, Ayala Blvd, Ermita, 1000 Manila, Philippines

2. Chemistry Department, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines

Abstract

A novel green method of producing potassium sulfate from a sustainable source is described. Aqueous carrageenan is subjected to hydrothermal carbonization inside a pressure vessel. Separation of the liquid component from the hydrochar followed by evaporation to dryness and treatment with ethanol afforded potassium sulfate. Characterization using SEM-EDX, XRD and Raman spectroscopy confirms the identity of potassium sulfate in the form of K3H(SO4)2. The green process allows the facile release of sulfate ester group from the carrageenan chains and combining with the residual potassium ions in the carrageenan. The new method allows for the simplification of the process of producing potassium sulfate in an environmental friendly way and using a renewable source.

Publisher

Asian Journal of Chemistry

Subject

General Chemistry

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