Enhanced removal of methylene blue from water by mesopore-dominant biochar from kelp: Kinetic, equilibrium and thermodynamic studies

Wang, Liuting; Zhou, Zhikang; Li, Xintong; Zeng, Lingyu; Xu, Wenjun; Ma, Yankun; Cai, Jinjun

doi:10.1016/j.colsurfa.2024.133652

Colloids and Surfaces A: Physicochemical and Engineering Aspect

2024

DOI: 10.1016/j.colsurfa.2024.133652

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Enhanced removal of methylene blue from water by mesopore-dominant biochar from kelp: Kinetic, equilibrium and thermodynamic studies

Liuting Wang,

Zhikang Zhou,

Xintong Li

et al.

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2024

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Cited by 3 publications

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Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

Thomas,

Cavalcante,

de Araújo Padilha

et al. 2024

Biomass Conv. Bioref.

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The economic exploitation of sisal (Agave sisalana) fibers leads to the generation of underutilized waste. Therefore, technologies must be developed to mitigate the environmental impacts caused by inadequate waste disposal and ensure more income from sisal exploration. The present study investigated the potential of agave residues in producing biochar with high adsorbent capacity via slow pyrolysis. Hybrid Itaporanga, Hybrid Bahia, and Mutant-1 hybrid agave varieties were used as precursors and methylene blue (MB) dye was used as a solute. In general, agave residues presented similar contents of lignin (12.1-13.2%) and ash (10.3-13.9%), while the greatest differences were recorded in the values of holocellulose (31.4%-42.4%) and extractives (23.2%-33.4%). The increase in temperature favored an increase in the surface area and volume of micropores in the biochar; however, the adsorption capacity of MB dye was reduced. The pseudo-second-order models effectively adjusted the adsorption kinetics. The Hybrid Itaporanga biochar obtained at 400 °C outperformed the other biochar, presenting static (80 mg.g -1 ) and dynamic (180 mg.g -1 ) adsorption values. Thus, thermochemical valorization of agave residue is attractive to obtain a cheap and environmentally friendly adsorbent.

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Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

Thomas,

Cavalcante,

de Araújo Padilha

et al. 2024

Biomass Conv. Bioref.

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Enhanced adsorption of Methylene blue with walnut shell carbon chemically activated by K2CO3

Ren,

Li,

2024

Biomass Conv. Bioref.

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Hydrothermal chemical modification of red mud for efficient adsorption of methylene blue

Hu,

Yang,

Zhou

et al. 2024

Environmental Technology

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Enhanced removal of methylene blue from water by mesopore-dominant biochar from kelp: Kinetic, equilibrium and thermodynamic studies

Cited by 3 publications

References 45 publications

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

Enhanced adsorption of Methylene blue with walnut shell carbon chemically activated by K2CO3

Hydrothermal chemical modification of red mud for efficient adsorption of methylene blue

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