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- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received December 19, 2023
Accepted February 16, 2024
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Effect of Na 2 CO 3 on Production of NaHCO 3 Using Desulfurized Na 2 SO 4 Waste
Abstract
CO 2 is the primary greenhouse gas emitted through human activities which cause global warming. Many countries and
international regulations aim to reduce CO 2 and encourage development of a net-zero society by 2050, thus, CCUS (carbon
capture, utilization, and storage) can be considered as a key technology for achieving this goal. Among the many industrial
processes, NaHCO 3 production is a representative CCUS technology which satisfi es both CO 2 reduction and economic incentive.
Recently, Na 2 SO 4 waste, containing 15% impurities (i.e., various heavy metals), produced as a by-product generated
from desulfurized processes in steel industry has received a great deal of attention since landfi lling has been the only way
to treat it. Na 2 SO 4 could be a suitable source of NaHCO 3 production as CCUS; however, there are no commercial processes
for production of NaHCO 3 using Na 2 SO 4 as the raw material, since it has low production effi ciency compared to other Na +
sources. This study evaluates the regeneration of NaHCO 3 using Na 2 SO 4 waste and our results show that a combination of
Na 2 SO 4 waste and the addition of 20% Na 2 CO 3 can sharply increase the yield of NaHCO 3 with minimizing the consumption
of expensive NH 3 since alkaline properties of Na 2 CO 3 .
