Preliminary Study of Calorific Value Increase on Lignite Coal Using Dialkyl Carbohydrate Biosurfactant

Mahreni, Mahreni (2021) Preliminary Study of Calorific Value Increase on Lignite Coal Using Dialkyl Carbohydrate Biosurfactant. J. Pure App. Chem. Res.,. (Unpublished)

Text (PENILAIAN PEER REV JURNAL SINTA -2) 1.3. JURNAL S-2 (RENI DAN SRI).pdf Download (108kB)

Abstract

ABSTRACT
Coal is a fossil fuel that is the second mainstay after petroleum. The use of coal in Indonesia is dominated by types of low or medium grade coal because of the abundant amount, such as lignite. A new technological breakthrough is needed to upgrade the quality of low-grade coal to middle and upper class coal. Upgrading the quality is not only in terms of increasing the calorific value of coal but also how the waste produced by the process is environmentally friendly. Therefore, coal washing using dialkyl carbohydrate biosurfactant can be used alternatively in the process of upgrading coal quality.
This research aims to improve the quality of lignite coal with environmentally friendly materials. Lignite coal was washed with a biosurfactant solution of dialkyl carbohydrates from brown algae (Sargasum sp) and red algae (Euchema cottonii) to increase its heating value. Dialkyl carbohydrates were tested on coal sizes of 80, 64, 16 and 6 mesh.
The most biosurfactant to increasing the calorific value was the biosurfactant from brown algae, namely Isopropyl Stearate Alginate (ISA) 0.5%, which was able to increase the calorific value of lignite coal up to 2722.74 cal/g, or increased by 11%. The size of the coal also influenced the calorific value of lignite coal. Of the four coal sizes of 80, 64, 16, and 6 mesh, the size of 80 mesh had the highest increase in calorific value. The smaller the coal size, the greater the adsorption of surfactant

Item Type:	Other
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User:	Dr.Ir., MT Mahreni Mahreni
Date Deposited:	28 Jun 2022 01:37
Last Modified:	28 Jun 2022 01:50
URI:	http://eprints.upnyk.ac.id/id/eprint/30143

Actions (login required)

View Item