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<p>Due to the persistence of heavy metals, excess carbon compounds, and pathogens pollutants in sewage, often exceeding safe threshold-level, has made their removal a critical environmental and public health priority. The present study focused on the decontamination of wastewater through a combination of electrocoagulation/sonication (EC/Sonic) and alternative filtration using cellulose microfibers isolated from Alfa fibers and zeolites-derived combustion residues and local clays during hydrothermal curing. The Taguchi methodology was applied to optimize key operational parameters, including current density, electrolysis time, and solution pH, while their effects on pollutant reduction were investigated using ANOM/ANOVA analysis. The result proved that the EC/Sonic process was an effective pretreatment, achieving near-complete removal of cadmium and chromium (99.99%), as well as a significant COD, BOD<sub>5,</sub> and turbidity reduction by 76.92%, 89.1%, and 98.36% respectively. These findings were obtained under optimized conditions: current density (J) = 5&#xa0;mA/cm<sup>2</sup>, (pH) = 8, and electrolysis time (t) = 25&#xa0;min with a consumption energy of only 1.36 Wh/L. These outcomes were found to follow a pseudo-second-order model, suggesting that chemisorption dominates the pollutant removal kinetics. Subsequent filtration using cellulose-zeolite filters further enhanced the overall treatment resident in COD, BOD<sub>5</sub>, and turbidity abolition by 86.22%, 94.41%, and 99.91%, respectively, showcasing the adsorption potential of analcime zeolitic crystals embedded within the cellulose fibrous network. In addition, ion-chloride levels were effectively addressed using the Mohr-method, achieving an elimination rate of 80%. These findings underscore the effectiveness and innovation of this integrated approach for addressing a broad range of pollutants in sewage samples.</p> Graphical Abstract <p></p>

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Electrocoagulation/Sonication coupled with Cellulose–Zeolite Membrane for Sewage Remediation: Analytical, Biochemical, and Statistical Insights

  • 期刊论文

  • 发表日期：

    2025年7月21日

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  • Abdellah Ait Baha,
  • Yousra Behja,
  • Rachid Idouhli,
  • Kamal Tabit,
  • Loubna El fels,
  • El-houssaine Ablouh,
  • Mohy Eddine Khadiri,
  • Abdesselam Abouelfida

摘要

Due to the persistence of heavy metals, excess carbon compounds, and pathogens pollutants in sewage, often exceeding safe threshold-level, has made their removal a critical environmental and public health priority. The present study focused on the decontamination of wastewater through a combination of electrocoagulation/sonication (EC/Sonic) and alternative filtration using cellulose microfibers isolated from Alfa fibers and zeolites-derived combustion residues and local clays during hydrothermal curing. The Taguchi methodology was applied to optimize key operational parameters, including current density, electrolysis time, and solution pH, while their effects on pollutant reduction were investigated using ANOM/ANOVA analysis. The result proved that the EC/Sonic process was an effective pretreatment, achieving near-complete removal of cadmium and chromium (99.99%), as well as a significant COD, BOD5, and turbidity reduction by 76.92%, 89.1%, and 98.36% respectively. These findings were obtained under optimized conditions: current density (J) = 5 mA/cm2, (pH) = 8, and electrolysis time (t) = 25 min with a consumption energy of only 1.36 Wh/L. These outcomes were found to follow a pseudo-second-order model, suggesting that chemisorption dominates the pollutant removal kinetics. Subsequent filtration using cellulose-zeolite filters further enhanced the overall treatment resident in COD, BOD5, and turbidity abolition by 86.22%, 94.41%, and 99.91%, respectively, showcasing the adsorption potential of analcime zeolitic crystals embedded within the cellulose fibrous network. In addition, ion-chloride levels were effectively addressed using the Mohr-method, achieving an elimination rate of 80%. These findings underscore the effectiveness and innovation of this integrated approach for addressing a broad range of pollutants in sewage samples.

Graphical Abstract