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<p>A novel foaming agent, sodium perborate (NaBO<sub>3</sub>), has been successfully integrated with biomass ash-based geopolymer (BAG). This yields a new material, NaBO<sub>3</sub>@BAG, representing a promising, cost-effective new approach for removing organic methylene blue (MB) dye. The NaBO<sub>3</sub>@BAG material exhibits superior absorption capabilities for MB dye compared to both hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) modified BAG and the pure BAG. The 0.75 wt% NaBO<sub>3</sub>@BAG achieved the highest adsorption capacity for MB dye as 24.02&#xa0;mg/g, outperforming 0.75 wt% H<sub>2</sub>O<sub>2</sub>@BAG (23.65&#xa0;mg/g) and pure BAG (22.60&#xa0;mg/g). Adding just 0.75 wt% NaBO<sub>3</sub> significantly increased mesopore structures, directly creating a greater active absorption area. The active surface area increased from 90.91 m<sup>2</sup>/g to 126.04 m<sup>2</sup>/g. While this is lower at 107.56 m<sup>2</sup>/g achieved with 0.75 wt% H<sub>2</sub>O<sub>2</sub>. The NaBO3@BAG material exhibited excellent stability and reusability, retaining over 81% efficiency after five absorption cycles.</p>

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Investigating the removal efficiency of methylene blue dye and the reusability of NaBO3 modified biomass ash geopolymer

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月7日

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  • Kornkanok Boonserm,
  • Panglam Charoenchit,
  • Anan Sutcha,
  • Jaru Jutimoosik,
  • Rarm Phinjaroenphan

摘要

A novel foaming agent, sodium perborate (NaBO3), has been successfully integrated with biomass ash-based geopolymer (BAG). This yields a new material, NaBO3@BAG, representing a promising, cost-effective new approach for removing organic methylene blue (MB) dye. The NaBO3@BAG material exhibits superior absorption capabilities for MB dye compared to both hydrogen peroxide (H2O2) modified BAG and the pure BAG. The 0.75 wt% NaBO3@BAG achieved the highest adsorption capacity for MB dye as 24.02 mg/g, outperforming 0.75 wt% H2O2@BAG (23.65 mg/g) and pure BAG (22.60 mg/g). Adding just 0.75 wt% NaBO3 significantly increased mesopore structures, directly creating a greater active absorption area. The active surface area increased from 90.91 m2/g to 126.04 m2/g. While this is lower at 107.56 m2/g achieved with 0.75 wt% H2O2. The NaBO3@BAG material exhibited excellent stability and reusability, retaining over 81% efficiency after five absorption cycles.