Utilization and optimization of a sustainable environmental process for simultaneous recovery of H3BO3 and NaOH from tincal

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2024-10-01 DOI:10.1007/s13762-024-06044-2

H. Şenol, D. Adıgüzel, A. Kanca, O. N. Ata, S. Yapıcı

{"title":"Utilization and optimization of a sustainable environmental process for simultaneous recovery of H3BO3 and NaOH from tincal","authors":"H. Şenol, D. Adıgüzel, A. Kanca, O. N. Ata, S. Yapıcı","doi":"10.1007/s13762-024-06044-2","DOIUrl":null,"url":null,"abstract":"<div><p>The present study proposes a bipolar membrane electrodialysis (BMED) integrated sustainable environment-friendly process for producing H<sub>3</sub>BO<sub>3</sub> in high purity and NaOH from tincal. Employment of Taguchi experimental design technique supported by TOPSIS optimization method revealed that the optimum process parameters are the initial feed concentration of 160 g NaCl/L and 36 g H<sub>3</sub>BO<sub>3</sub>/L, the applied current of 4.2 A, the flow rate of 31 L/h, the initial acid and base concentration of 0.15 M, and the electrolyte concentration of 0.2 M. In the experiment performed under optimum operating conditions, 2.15 M acid and 2.20 M base were obtained. The produced acid solution was determined to contain 10.5 g NaCl/L and 2.8 g H<sub>3</sub>BO<sub>3</sub>/L and the base to contain 13.3 g NaCl/L and 6 g H<sub>3</sub>BO<sub>3</sub>/L. The boric acid crystals obtained by the crystallization of concentrated feed solution from BMED were determined to have 99.96% purity, which verifies that H<sub>3</sub>BO<sub>3</sub> in high purity can be produced by BMED process. Solid waste and concentrated liquid waste formation of the conventional H<sub>3</sub>BO<sub>3</sub> production process can also be eliminated, and NaOH can be produced at an industrial scale without chlorine gas emission, by using BMED as an alternative to conventional methods.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":589,"journal":{"name":"International Journal of Environmental Science and Technology","volume":"22 8","pages":"6711 - 6728"},"PeriodicalIF":3.0000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Environmental Science and Technology","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s13762-024-06044-2","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

The present study proposes a bipolar membrane electrodialysis (BMED) integrated sustainable environment-friendly process for producing H₃BO₃ in high purity and NaOH from tincal. Employment of Taguchi experimental design technique supported by TOPSIS optimization method revealed that the optimum process parameters are the initial feed concentration of 160 g NaCl/L and 36 g H₃BO₃/L, the applied current of 4.2 A, the flow rate of 31 L/h, the initial acid and base concentration of 0.15 M, and the electrolyte concentration of 0.2 M. In the experiment performed under optimum operating conditions, 2.15 M acid and 2.20 M base were obtained. The produced acid solution was determined to contain 10.5 g NaCl/L and 2.8 g H₃BO₃/L and the base to contain 13.3 g NaCl/L and 6 g H₃BO₃/L. The boric acid crystals obtained by the crystallization of concentrated feed solution from BMED were determined to have 99.96% purity, which verifies that H₃BO₃ in high purity can be produced by BMED process. Solid waste and concentrated liquid waste formation of the conventional H₃BO₃ production process can also be eliminated, and NaOH can be produced at an industrial scale without chlorine gas emission, by using BMED as an alternative to conventional methods.

Graphical abstract

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.