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<p>Remediation of industrial effluents is critical for controlling land pollution and protecting the environment from heavy metal toxicity. In the present research, textile industry effluents were collected from two different processing stages (dyeing and finishing) and treated with <i>Scenedesmus quadricauda</i> (green microalga) and <i>Phormidium bohneri</i> (filamentous blue green alga) to reduce water pollution. <i>S. quadricauda</i> and <i>P. bohneri</i> were cultivated in the industrial effluents in different dilutions of wastewater (T<sub>1</sub>, T<sub>2</sub>, T<sub>3</sub> and T<sub>4</sub>) and T<sub>0</sub> was taken as control. The primary metals to be studied were lead, chromium, cadmium, mercury, and arsenic. The results demonstrated significant reductions in key water quality parameters, including total dissolved solids (65%), hardness (70%), calcium (70%), magnesium (75%), chemical oxygen demand (75%), biological oxygen demand (78%), and chlorides (85%), are indicating the potential of <i>S. quadricauda</i> and <i>P. bohneri</i> as a phycoremediation agent. <i>P. bohneri</i> achieved (100%) removal of lead and chromium (99.72%) in T<sub>4</sub> treatments during finishing and dyeing stages, outperforming <i>S. quadricauda</i>, reaching (99.27%) lead and (97.96%) chromium removal. <i>S. quadricauda</i> and <i>P. bohneri</i> showed significant contaminants and heavy metal filtering properties which may help maintaining the heavy metals at sub toxic levels. The current findings highlight the potential of <i>P. bohneri</i> and <i>S. quadricauda</i> as a sustainable and cost-effective solution for treating textile wastewater. Additionally, the treated water produces algal biomass, thereby promoting a circular economy.</p>

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Heavy metal remediation of textile wastewater by Scenedesmus quadricauda and Phormidium bohneri for environmental safety

  • 期刊论文

  • 发表日期：

    2026年1月26日

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  • S. Sarwar,
  • S. Gul,
  • F. Ahmed,
  • R. Dewani,
  • M. F. Nawaz,
  • A. M. Abu-Elsaoud,
  • Z. Abideen

摘要

Remediation of industrial effluents is critical for controlling land pollution and protecting the environment from heavy metal toxicity. In the present research, textile industry effluents were collected from two different processing stages (dyeing and finishing) and treated with Scenedesmus quadricauda (green microalga) and Phormidium bohneri (filamentous blue green alga) to reduce water pollution. S. quadricauda and P. bohneri were cultivated in the industrial effluents in different dilutions of wastewater (T1, T2, T3 and T4) and T0 was taken as control. The primary metals to be studied were lead, chromium, cadmium, mercury, and arsenic. The results demonstrated significant reductions in key water quality parameters, including total dissolved solids (65%), hardness (70%), calcium (70%), magnesium (75%), chemical oxygen demand (75%), biological oxygen demand (78%), and chlorides (85%), are indicating the potential of S. quadricauda and P. bohneri as a phycoremediation agent. P. bohneri achieved (100%) removal of lead and chromium (99.72%) in T4 treatments during finishing and dyeing stages, outperforming S. quadricauda, reaching (99.27%) lead and (97.96%) chromium removal. S. quadricauda and P. bohneri showed significant contaminants and heavy metal filtering properties which may help maintaining the heavy metals at sub toxic levels. The current findings highlight the potential of P. bohneri and S. quadricauda as a sustainable and cost-effective solution for treating textile wastewater. Additionally, the treated water produces algal biomass, thereby promoting a circular economy.