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<p>Nutrient recovery from sewage wastewater through nanomaterial adsorbents is a promising method for reducing environmental pollution and recycling essential nutrients. In this study, various adsorbents, specifically Chitosan (CHI), Ceramic-based Zeolite nanomaterial (N-Zs), and Silica-assisted Nano hemicellulose (Si-NHC), were prepared to analyze their capacity to adsorb NH<sub>4</sub><sup>+</sup> and PO<sub>4</sub><sup>3−</sup> from synthetic and real wastewater sources. The study revealed a notable adsorption capacity of 84.734 ± 10.165&#xa0;mg/g and 0.192 ± 0.024&#xa0;mg/g for NH<sub>4</sub><sup>+</sup> and PO<sub>4</sub><sup>3−</sup>, respectively, by Si-NHC. The hydrothermally synthesized N-Zs show poor efficiency compared to other adsorbents. Optimal conditions for NH<sub>4</sub><sup>+</sup> adsorption were identified at a pH of 5.5, utilizing 0.1&#xa0;g of Si-NHC per 50&#xa0;ml of solution, with a contact time of 2.5&#xa0;h. An economic analysis of NH<sub>4</sub><sup>+</sup> recovery from treated wastewater indicated advantages due to its lower cost and higher adsorption capacity. The higher adsorption capacity and degradable nature position Si-NHC as a viable candidate for use as a fertilizer. The detailed adsorption and desorption cycle durability and efficiency of the Si-NHC were also evaluated.</p>

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Comparative analysis of nanomaterial adsorbents for nutrient recovery: unveiling the potential of silica-assisted nano hemicellulose in wastewater management

  • 期刊论文

  • 发表日期：

    2025年6月19日

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  • Renju,
  • Rajesh Singh

摘要

Nutrient recovery from sewage wastewater through nanomaterial adsorbents is a promising method for reducing environmental pollution and recycling essential nutrients. In this study, various adsorbents, specifically Chitosan (CHI), Ceramic-based Zeolite nanomaterial (N-Zs), and Silica-assisted Nano hemicellulose (Si-NHC), were prepared to analyze their capacity to adsorb NH4+ and PO43− from synthetic and real wastewater sources. The study revealed a notable adsorption capacity of 84.734 ± 10.165 mg/g and 0.192 ± 0.024 mg/g for NH4+ and PO43−, respectively, by Si-NHC. The hydrothermally synthesized N-Zs show poor efficiency compared to other adsorbents. Optimal conditions for NH4+ adsorption were identified at a pH of 5.5, utilizing 0.1 g of Si-NHC per 50 ml of solution, with a contact time of 2.5 h. An economic analysis of NH4+ recovery from treated wastewater indicated advantages due to its lower cost and higher adsorption capacity. The higher adsorption capacity and degradable nature position Si-NHC as a viable candidate for use as a fertilizer. The detailed adsorption and desorption cycle durability and efficiency of the Si-NHC were also evaluated.