abstract

• Excessive fluoride levels in drinking water (> 1.5 mg L−1) pose a severe public health risk, necessitating the development of effective, sustainable water quality improvement methods. This study explored the use of pleco-fish bone hydrochar (HC) as a fluoride adsorbent. HC was produced via hydrothermal carbonization (210 °C for 6 h) and characterized. It exhibited increased specific surface area (43 to 113 m2 g−1) and primarily consisted of Ca, P, C, and O, indicating hydroxyapatite presence. HC displayed a fluoride adsorption capacity of 4.68 mg g−1 at an initial 10 mg L−1 concentration, rising to 10 mg g−1 as the initial fluoride concentration increased from 2 to 60 mg L−1. However, the removal percentage dropped from 87 to 36%25 due to HC saturation. These findings highlight HC’s potential as a promising adsorbent for fluoride removal from aqueous solutions, addressing a critical public health concern.

authors

• Castro Larragoitia Guillermo Javier
• Cruz-Briano S.A.
• Delgado Sánchez Pablo
• Flores-Rojas A.I.
• Moreno-Piraján J.C.

publication date

• 2023-01-01

published in

• MRS Advances   Journal

keywords

Digital Object Identifier (DOI)

• 10.1557/s43580-023-00707-x

PubMed ID

start page

• 1357

end page

• 1363

volume

• 8

issue