Currently, the world's lithium reserves are over 70% present in the form of brine water. A series of studies have been conducted on brine water found in Gunung Panjang spring, Ciseeng, Bogor to determine the effect of the electrolysis process on the reduction of magnesium elements and the Mg/Li ratio in brine water. In this study, the process of electrolysis of brine water was carried out without a salt bridge using graphite electrodes at a large voltage of 15 V. The electrolysis process was carried out for 60 hours and brine filtrate samples were taken every six hours. The characterization tests were performed on samples including ICP-OES, XRD, and SEM-EDS tests. Based on the research result, it was known that the electrolysis process was able to reduce the magnesium concentration in brine water with increasing electrolysis time. The percentage of Mg levels that decreased in brine water was 58.74% at 60 hours. The Mg/Li ratio in brine water also decreased from 10.01 to 6.01. The interpretation of the XRD pattern using Match-3 software showed that the residue phase deposited during the electrolysis process was dominant in the form of Mg(OH2 (brucite) and Ca(OH2 (portlandite), while other minor phases were identified as KCl (sylvite), LiCl and NaCl (halite), while SEM-EDS analysis showed Ca, O and Mg elements are known to have the most even distribution of elements on the surface of the sample among other elements. The success of this research is a good step to preparing raw materials for manufacturing lithium carbonate precursors. Further research needs to be explored in an effort to reduce magnesium levels and the Mg/Li ratio by increasing the electrolysis duration and adding a salt bridge to separate anode and cathode.

1.
Laurence
Kavanagh
,
Jerome
Keohane
,
Guiomar Garcia
Cabellos
,
Andrew
Lloyd
,
John
Cleary
,
Resource
7
.
57
(
2018
).
2.
Pankaj K.
Choubey
,
Min-seuk
Kim
,
Rajiv R.
Srivastava
,
Jae-chun
Lee
,
Jin-Young
Lee
,
Miner. Eng.
89
,
119
137
(
2016
).
3.
Hanna
Vikström
,
Simon
Davidsson
,
Mikael
Höök
,
Appl. Energy
110
,
252
266
(
2013
).
4.
Salafudin
,
Rek. Hijau
5
,
178
187
(
2021
).
5.
William A.
Averill
,
David L.
Olson
, “A review of extractive processes for lithium from ores and brines” in
Proceeding Lithium Needs and Resources
, (
Elsevier
,
Corning, NY
,
1977
), pp.
305
313
.
6.
Laura Talens
Peiró
,
Gara Villalba
Méndez
,
Robert U.
Ayres
,
JOM
65
,
986
996
(
2013
).
7.
Victoria Flexer
A
,
Celso Fernando Baspineiro
A
,
Claudia Inés
Galli
,
Sci. Total Environ.
639
,
1188
1204
(
2018
).
8.
Stephen E.
Kesler
,
Paul W.
Gruber
,
Pablo A.
Medina
,
Gregory A.
Keoleian
,
Mark P.
Everson
,
Timothy J.
Wallington
,
Ore Geol. Rev.
48
,
55
69
(
2012
).
9.
Hiroki
Fukuda
, “
Lithium extraction from brine with ion exchange resin and ferric phosphate
,” Ph.D. thesis,
University of British Columbia
,
2019
.
10.
Peng-Yuan
Ji
,
Zhi-Yong
Ji
,
Qing-Bai
Chen
,
Jie
Liu
,
Ying-Ying
Zhao
,
Shi-Zhao
Wang
,
Fei
Li
,
Jun-Sheng
Yuan
,
Sep. Purif. Technol.
207
,
1
11
(
2018
).
11.
Xi-Juan
Pan
,
Zhi-He
Dou
,
De-Liang
Meng
,
Xiu-Xiu
Han
,
Ting-An
Zhang
,
Hydrometallurgy
191
,
1
11
(
2020
).
12.
César H. Díaz
Nieto
,
Noelia A.
Palacios
,
Kristof
Verbeeck
,
Antonin
Prévoteau
,
Korneel
Rabaey
,
Victoria
Flexer
,
Water Res.
154
,
117
124
(
2019
).
13.
Mohammadreza
Taheraslani
,
Han
Gardeniers
,
Nanomaterials
9
,
589
(
2019
).
14.
Toshiki
Miyazaki
,
Takashi
Arii
,
Yuki
Shirosaki
,
Ceram. Int.
45
,
14039
14044
(
2019
).
This content is only available via PDF.
You do not currently have access to this content.