Article In: cienciavitae
Seaweed-Derived Biochar for Effective Treatment of Dye-Contaminated Wastewater
Water
— 2025 — MDPI AG
Key information
Authors:
Published in
04/18/2025
Abstract
<jats:p>Freshwater scarcity is a growing concern, exacerbated by industrial effluents containing dyes and other pollutants that endanger aquatic ecosystems. This study explores the potential of biochar sorbents, derived from renewable seaweed biomass, as a sustainable solution for water decontamination. Seaweed biomass (sargaço), collected from Portuguese seashores, was carbonized at 300 °C and 400 °C to produce biochar. Adsorption experiments with methylene blue (MB) revealed that carbonization at 400 °C, followed by ball milling, significantly enhanced adsorption performance. Langmuir isotherm analysis demonstrated a maximum adsorption capacity of 500 mg MB/g sorbent for the optimized biochar (400 °C, ball milled), with adsorption efficiency improving at elevated temperatures and pH levels up to 12. Infrared reflectance spectra of fresh and post-adsorption biochars confirmed the involvement of π–π interactions and hydrogen bonding in the adsorption mechanism. These findings highlight the potential of seaweed-derived biochar as an effective and eco-friendly solution for water purification.</jats:p>
Publication details
Authors in the community:
Manuel Francisco Costa Pereira
ist13225
Publication version
VoR - Version of Record
Publisher
MDPI AG
Title of the publication container
Water
First page or article number
1215
Volume
17
Issue
8
ISSN
2073-4441
Fields of Science and Technology (FOS)
earth-and-related-environmental-sciences - Earth and related environmental sciences
Publication language (ISO code)
eng - English
Alternative identifier (URI)
https://doi.org/10.3390/w17081215
Rights type:
Only metadata available