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<p>In this study, the synthesis of an iron-based coagulant from roasted jarosite is studied for wastewater treatment. Poly-ferric chloride (PFC) coagulant was synthesized from roasted jarosite through concentrated HCl acid leaching. Batch coagulation experiments were carried out with PFC coagulant for the removal of turbidity and dyes from wastewater. Coagulation experiments were conducted with the effects of coagulant dose (0.2–0.8&#xa0;ml/L), pH (4.5–8.5pH), and initial concentration of dye (50–250&#xa0;mg/L) and turbidity (10–50 NTU). The maximum removal of DR-80 dye and turbidity is more than 99% at 5.5 pH and 8.5 pH, respectively. The coagulation process with the synthesized PFC coagulant was performed for the removal of dye with adsorption from the dye industry wastewater. Therefore, we could conclude the treatment of dye industry wastewater using integrated processes, coagulation and adsorption.</p>

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Waste-to-coagulant approach: preparation of iron-based poly-ferric chloride from jarosite and its coagulation performance

  • 期刊论文

  • 发表日期：

    2026年6月16日

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  • Pushpendra Kushwaha,
  • Madhu Agarwal

摘要

In this study, the synthesis of an iron-based coagulant from roasted jarosite is studied for wastewater treatment. Poly-ferric chloride (PFC) coagulant was synthesized from roasted jarosite through concentrated HCl acid leaching. Batch coagulation experiments were carried out with PFC coagulant for the removal of turbidity and dyes from wastewater. Coagulation experiments were conducted with the effects of coagulant dose (0.2–0.8 ml/L), pH (4.5–8.5pH), and initial concentration of dye (50–250 mg/L) and turbidity (10–50 NTU). The maximum removal of DR-80 dye and turbidity is more than 99% at 5.5 pH and 8.5 pH, respectively. The coagulation process with the synthesized PFC coagulant was performed for the removal of dye with adsorption from the dye industry wastewater. Therefore, we could conclude the treatment of dye industry wastewater using integrated processes, coagulation and adsorption.