Scholarlink

<p>Herein, a new hybrid organic-inorganic nanocomposite material of chitosan, zirconium oxide, and aluminum oxide (CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub>) was successfully synthesized and applied for simulated wastewater containing RBO dye removal. The experimental design was formulated by response surface methodology (RSM) of Box Behnken Design (BBD), which involved 17 experiments to assess the influence of three factors: CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> dose (<b>A</b>: 0.02–0.1&#xa0;g), solution pH (<b>B</b>: 4–10), and contact time (<b>C</b>: 10–60&#xa0;min), on the RBO dye adsorption performance by CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub>. Moreover, the highest removal of RBO dye (97.8%) was obtained under the condition of pH of 4, contact time of 60&#xa0;min and CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> dose of 0.06&#xa0;g/100 mL. The developed BBD model shows significant, high accuracy and applicable as confirmed by the ANOVA finding, where F-value of 319.70 and p-value less than 0.0001. Adsorption kinetics and isotherm analysis revealed that the pseudo-second-order kinetic model and Langmuir with Temkin isotherm models provided the best fit for explaining the adsorption process of RBO dye onto the CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> nanocomposite. The CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> demonstrated a preferable adsorption capacity of 311.6&#xa0;mg/g. Additionally, the thermodynamic investigation revealed that the adsorption process of RBO dye by CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> was spontaneous and exothermic as validated by the negative value of ΔG° and AH°. The RBO dye adsorption mechanism onto CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> surface was influenced by n-π interactions, hydrogen bonding, and electrostatic interactions. These results demonstrate the potential of the CHS/ZrO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> nanocomposite as a highly effective adsorbent for the removal of acidic dyes from wastewater, offering a promising solution for water purification applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Blended metal oxides of zirconium and aluminium nanoparticles doped chitosan biopolymer for remazol brilliant orange dye removal: response surface methodology optimization

  • 期刊论文

  • 发表日期：

    2025年12月16日

查看全文
  • Ali H. Jawad,
  • Gloria Cassandra Salutan,
  • Ruihong Wu,
  • Zeid A. Alothman

摘要

Herein, a new hybrid organic-inorganic nanocomposite material of chitosan, zirconium oxide, and aluminum oxide (CHS/ZrO2/Al2O3) was successfully synthesized and applied for simulated wastewater containing RBO dye removal. The experimental design was formulated by response surface methodology (RSM) of Box Behnken Design (BBD), which involved 17 experiments to assess the influence of three factors: CHS/ZrO2/Al2O3 dose (A: 0.02–0.1 g), solution pH (B: 4–10), and contact time (C: 10–60 min), on the RBO dye adsorption performance by CHS/ZrO2/Al2O3. Moreover, the highest removal of RBO dye (97.8%) was obtained under the condition of pH of 4, contact time of 60 min and CHS/ZrO2/Al2O3 dose of 0.06 g/100 mL. The developed BBD model shows significant, high accuracy and applicable as confirmed by the ANOVA finding, where F-value of 319.70 and p-value less than 0.0001. Adsorption kinetics and isotherm analysis revealed that the pseudo-second-order kinetic model and Langmuir with Temkin isotherm models provided the best fit for explaining the adsorption process of RBO dye onto the CHS/ZrO2/Al2O3 nanocomposite. The CHS/ZrO2/Al2O3 demonstrated a preferable adsorption capacity of 311.6 mg/g. Additionally, the thermodynamic investigation revealed that the adsorption process of RBO dye by CHS/ZrO2/Al2O3 was spontaneous and exothermic as validated by the negative value of ΔG° and AH°. The RBO dye adsorption mechanism onto CHS/ZrO2/Al2O3 surface was influenced by n-π interactions, hydrogen bonding, and electrostatic interactions. These results demonstrate the potential of the CHS/ZrO2/Al2O3 nanocomposite as a highly effective adsorbent for the removal of acidic dyes from wastewater, offering a promising solution for water purification applications.