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

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

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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 2006 nissan altima radio 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 lochby venture pouch as well as reed-based biochar as a promising dye adsorbent.