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<p>With increasing demand and rapid decline of fossil fuels, a global imperative to explore alternative sources of energy is essential. Sewage sludge stands out as a viable option for clean energy generation. The present study aims to assess the potential of sewage sludge for biogas production to supplement the emerging energy needs. Comprehensive characterization, including proximate and ultimate analysis, pH testing, and calorific value determination, highlighted low moisture content (7.68 to 8.9%, dry basis wt.), low ash content (5.6 to 10%), high carbon content (39.2 to 51.6%) with low nitrogen content (1.86 to 2.26%), and a pH range of 7.12 to 8.40. The samples had an optimal C/N ratio between 20 and 24. Additionally, FT-IR spectroscopy of the samples provided details of the organic composition of sewage sludge, suggesting it as a viable clean energy source. The theoretical bio-methane potential assessment showed a methane content of 40–44%, highlighting sewage sludge as a functional biofuel for addressing the future energy challenges. Co-digestion of sewage sludge with lignocellulosic feedstock, like fruit and vegetable waste, will help enhance the methane yield and biogas quality. This research highlights the dual benefits of waste reduction and clean energy production.</p>

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Quality and potential assessment of sewage sludge for clean energy utilization: a study from Srinagar City

  • 期刊论文

  • 发表日期：

    2025年2月12日

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  • Samroot Samreen Wani,
  • Malik Parveez

摘要

With increasing demand and rapid decline of fossil fuels, a global imperative to explore alternative sources of energy is essential. Sewage sludge stands out as a viable option for clean energy generation. The present study aims to assess the potential of sewage sludge for biogas production to supplement the emerging energy needs. Comprehensive characterization, including proximate and ultimate analysis, pH testing, and calorific value determination, highlighted low moisture content (7.68 to 8.9%, dry basis wt.), low ash content (5.6 to 10%), high carbon content (39.2 to 51.6%) with low nitrogen content (1.86 to 2.26%), and a pH range of 7.12 to 8.40. The samples had an optimal C/N ratio between 20 and 24. Additionally, FT-IR spectroscopy of the samples provided details of the organic composition of sewage sludge, suggesting it as a viable clean energy source. The theoretical bio-methane potential assessment showed a methane content of 40–44%, highlighting sewage sludge as a functional biofuel for addressing the future energy challenges. Co-digestion of sewage sludge with lignocellulosic feedstock, like fruit and vegetable waste, will help enhance the methane yield and biogas quality. This research highlights the dual benefits of waste reduction and clean energy production.