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Investigating the use of CaCO3 particles synthesized in the Ca(OH)2-CO2-H2O system for organic matter removal: adsorption efficiency and recyclability.

Publication ,  Journal Article
Arslan Çene, G; Soyer, E; Wiesner, MR
Published in: Environmental technology
June 2024

In this study, we experimentally investigate the production and characterization of CaCO3 particles through the carbonation process of Ca(OH)2 and evaluate their potential application in removing organic matter. The CaCO3 particles were characterized using BET, SEM-EDX, FT-IR, particle size, and XRD techniques. Adsorption of organic matter was studied using synthetic solutions and samples from two surface water sources. Experiments were conducted at room temperature with adsorbent dosages ranging from 1.3 to 21.5 g/L, initial dissolved organic carbon concentrations between 2.5 and 20 mg/L (initial loading: 0.1-14.6 mgDOC/gCaCO3), and a contact time of at least 5 minutes. We observed a removal efficiency of 70-80% for DOC and 90-95% for UV254 at a low concentration of organic matter (humic acids, 2.5 mgDOC/L). At a concentration of 5.0 mg DOC/L, we achieved (i) 70-90% DOC removal for humic acid, (ii) 50-65% DOC removal for one surface water sample with SUVA254 of 2.4 L/mg·m, and (iii) 20-35% DOC removal for another surface water sample with SUVA254 of 4.3 L/mg·m. Furthermore, we investigated the performance of the prepared particles in repeated usage for organics removal. In conclusion, our findings propose areas for future research including optimizing particle cycling within the reaction environment, exploring particle utilization in reactors such as an up-flow particle bed, and assessing potential applications in a membrane contactor. The environmentally friendly and non-toxic nature of CaCO3 particles emphasizes their significance in future research and applications.

Duke Scholars

Published In

Environmental technology

DOI

EISSN

1479-487X

ISSN

0959-3330

Publication Date

June 2024

Start / End Page

1 / 19

Related Subject Headings

  • Water Purification
  • Water Pollutants, Chemical
  • Recycling
  • Particle Size
  • Humic Substances
  • Environmental Engineering
  • Carbon Dioxide
  • Calcium Hydroxide
  • Calcium Carbonate
  • Adsorption
 

Citation

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Arslan Çene, G., Soyer, E., & Wiesner, M. R. (2024). Investigating the use of CaCO3 particles synthesized in the Ca(OH)2-CO2-H2O system for organic matter removal: adsorption efficiency and recyclability. Environmental Technology, 1–19. https://doi.org/10.1080/09593330.2024.2368689
Arslan Çene, Gülay, Elif Soyer, and Mark R. Wiesner. “Investigating the use of CaCO3 particles synthesized in the Ca(OH)2-CO2-H2O system for organic matter removal: adsorption efficiency and recyclability.Environmental Technology, June 2024, 1–19. https://doi.org/10.1080/09593330.2024.2368689.
Arslan Çene, Gülay, et al. “Investigating the use of CaCO3 particles synthesized in the Ca(OH)2-CO2-H2O system for organic matter removal: adsorption efficiency and recyclability.Environmental Technology, June 2024, pp. 1–19. Epmc, doi:10.1080/09593330.2024.2368689.

Published In

Environmental technology

DOI

EISSN

1479-487X

ISSN

0959-3330

Publication Date

June 2024

Start / End Page

1 / 19

Related Subject Headings

  • Water Purification
  • Water Pollutants, Chemical
  • Recycling
  • Particle Size
  • Humic Substances
  • Environmental Engineering
  • Carbon Dioxide
  • Calcium Hydroxide
  • Calcium Carbonate
  • Adsorption