Scholarlink

<p>The present study aims to investigate the adsorption effectiveness of natural Algerian mineral clay (Orth-MC) for removing methylene blue (MB) from aqueous solutions. The physicochemical characteristics of Orth-MC were studied using X-ray diffraction (XRD), X-ray photoelectron spectroscopy, scanning electron microscopy with energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, Brunauer–Emmett–Teller analysis, cation exchange capacity and point of zero charge (pH<sub>pzc</sub>). Four experimental factors, including adsorbent dosage (10–70&#xa0;mg), pH (4–10), contact time (15–120&#xa0;min), and temperature (25–55&#xa0;°C), were optimized using a Box-Behnken design. An artificial neural network (ANN) was also employed to predict system performance. The pseudo-first-order (PFO) and pseudo-second-order kinetics models represented the adsorption kinetics, and monolayer adsorption was observed, with the isotherms well-represented by the Langmuir model (R<sup>2</sup> = 0.98). Orth-MC was highly efficient with a maximum adsorption capacity (q<sub>max</sub>) of 344.07&#xa0;mg/g. The MB removal efficiency of 94.7% was achieved under the optimum conditions (adsorbent dosage, 70&#xa0;mg; pH, 7; contact time, 120&#xa0;min; and temperature, 40&#xa0;°C). Both RSM and ANN models provided highly accurate predictions of the experimental results. These findings highlight the potential of Orth-MC as an effective and optimized adsorbent for the removal. Both RSM and ANN models provided highly accurate predictions of the experimental results. These findings highlight the potential of Orth-MC as an effective and optimized adsorbent for removing MB from aqueous media.</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

Eco-engineered natural clay: methylene blue adsorption optimized by RSM-ANN

  • 期刊论文

  • 发表日期：

    2025年11月27日

查看全文
  • R. Lebbihi,
  • L. Haddad,
  • C. Labiod,
  • A. Guesmi,
  • L. Khezami,
  • M. Fellah

摘要

The present study aims to investigate the adsorption effectiveness of natural Algerian mineral clay (Orth-MC) for removing methylene blue (MB) from aqueous solutions. The physicochemical characteristics of Orth-MC were studied using X-ray diffraction (XRD), X-ray photoelectron spectroscopy, scanning electron microscopy with energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, Brunauer–Emmett–Teller analysis, cation exchange capacity and point of zero charge (pHpzc). Four experimental factors, including adsorbent dosage (10–70 mg), pH (4–10), contact time (15–120 min), and temperature (25–55 °C), were optimized using a Box-Behnken design. An artificial neural network (ANN) was also employed to predict system performance. The pseudo-first-order (PFO) and pseudo-second-order kinetics models represented the adsorption kinetics, and monolayer adsorption was observed, with the isotherms well-represented by the Langmuir model (R2 = 0.98). Orth-MC was highly efficient with a maximum adsorption capacity (qmax) of 344.07 mg/g. The MB removal efficiency of 94.7% was achieved under the optimum conditions (adsorbent dosage, 70 mg; pH, 7; contact time, 120 min; and temperature, 40 °C). Both RSM and ANN models provided highly accurate predictions of the experimental results. These findings highlight the potential of Orth-MC as an effective and optimized adsorbent for the removal. Both RSM and ANN models provided highly accurate predictions of the experimental results. These findings highlight the potential of Orth-MC as an effective and optimized adsorbent for removing MB from aqueous media.