Synthesis and efficiency comparison of reed straw-based biochar as a mesoporous adsorbent for ionic dyes removal

The reed straw is assessed as a potential source of widely available renewable biomass for biochar production and compared with two other waste-based biomasses, namely fruit stones blend, and brewery spent grains. The biochars were activated via steam and CO2. While steam activation yielded 12 % carbon from reed biomass, CO2 activation resulted in biomass degradation. The characterization of reed biochar showed a mesoporous structure and a high surface area of 514 m2/g. The adsorption tests displayed a decent adsorption capacity of biochar, with values of 92.6 mg/g for methylene violet dye and 35.7 mg/g for acid green dye. Only 1 g/L dosage of reed biochar was able to remove 99 % of the 50 mg/L methylene violet solution in 15 min and 60 % of the 50 mg/L acid green solution in 10 min. The obtained results demonstrate reed biomass as a suitable source for biochar production as well as reed-based biochar as a promising dye adsorbent.

Description

Keywords

Biochar, CO activation, Dyes adsorption, Mesoporous adsorbent, Reed straw biomass, Steam activation, Waste biomass, Water treatment

DOI

10.1016/j.heliyon.2024.e24722

Citation

Tomin, O, Vahala, R & Yazdani, M R 2024, 'Synthesis and efficiency comparison of reed straw-based biochar as a mesoporous adsorbent for ionic dyes removal', Heliyon, vol. 10, no. 2, e24722. https://doi.org/10.1016/j.heliyon.2024.e24722

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202401312261

Collections

[article-cris] Insinööritieteiden korkeakoulu / ENG

Show all metadata

Synthesis and efficiency comparison of reed straw-based biochar as a mesoporous adsorbent for ionic dyes removal

Access rights

URL

Journal Title

Journal ISSN

Volume Title

Authors

Date

Department

Major/Subject

Mcode

Degree programme

Language

Pages

Series

Abstract

Description

Keywords

Other note

DOI

Citation

Permanent link to this item

Collections