Details

Autor(en) / Beteiligte

• Hungaro Yoshi, Henryck Cesar Massao
• Silva, André Batista
• de Souza, Marcos
• Bernardo de Faria, Sérgio Henrique
• Bernardo, André
• Bonfim-Rocha, Lucas

Titel

Multi-criteria assessment of sodium bicarbonate optimized production through CO2 utilization strategies

Ist Teil von

• Journal of cleaner production, 2022-05, Vol.349, p.131419, Article 131419

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• The use of CO2 as a feedstock for generating industrial products has been one of the most promising efforts for mitigating the impacts of human society on the environment. Among the options, sodium bicarbonate stands out as a versatile and highly demanded compound. This work aims to further expand studies in this subject, assessing alternative production routes while drawing multiple criteria comparisons with the conventional processes. All processes are simulated in Aspen Plus® at different operating conditions, and, then, rigorous optimization techniques based on metaheuristics are carried out. Results indicate that soda ash carbonation shows the best overall results at 35 °C, with a gross profit of US$ 0.23/kg of sodium bicarbonate, while the Solvay process and sodium sulfate carbonation showed a potential gross profit of 0.14 and 0.12 US$/kg at the same temperature, respectively. Availability of raw materials and demand for secondary products are, therefore, key aspects in evaluating the competitiveness of each route. Furthermore, the captured CO2 for each of these routes was of 0.32, 0.70 and 1.04 kg CO2/kg of product, respectively, and the secondary products of sodium sulfate carbonation indicate that it is an interesting approach to reduce waste, beign aligned to circular economy principles. Thus, the integration of such processes to industries with high CO2 emissions stands out as a promising strategy to further address society's growing concern regarding sustainable development. Lastly, the applied method was efficient in optimizing the models, enabling further studies not only regarding the entire sodium bicarbonate supply chain but also for comparing production routes for other products. [Display omitted] •Sodium bicarbonate production routes are compared regarding multiple criteria.•Metaheuristic optimization of NaHCO3 production routes was performed.•Soda ash carbonation at 35 °C is the most profitable route (US$ 0.22/kg).•Sodium sulfate carbonation is promising for CO2 utilization (1.04 kg CO2/kg).•Such processes can be integrated to industries with high CO2 emissions.