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<p>Increasing environmental concerns and rapid urbanization have led to significant municipal solid waste (MSW) generation. To address this challenge, waste-to-energy (WtE) incineration facilities are emerging as promising solutions in India. This study evaluates total soluble solids in incinerated municipal solid waste (IMSW) bottom ash using Indian Standard IS-2720 Part XXI. A comparative analysis was conducted between IMSW bottom ash, local river sand, and pond ash from a Madhya Pradesh thermal power plant to explore the feasibility of reusing IMSW bottom ash as a potential substitute for natural sand, having similar particle sizes. Results revealed significant variations in soluble solids content, with local river sand exhibiting the lowest levels, pond ash showing moderate increases, while IMSW bottom ash demonstrated substantially higher concentrations compared to both reference materials. The alkaline pH of IMSW bottom ash (8.8) was 15.8% and 13.2% higher than local sand (7.6) and pond ash (8.2) respectively. The aim was to explore the feasibility of reusing IMSW bottom ash as a potential substitute for natural sand, having their similar particle sizes. Though adequate from strength perspective as suggested in previous research, local IMSW bottom ash has notable soluble solids requiring comprehensive chemical evaluation and appropriate treatment methods. Despite comparable physical properties (specific gravity 2.48 vs. 2.62 for sand), the elevated soluble solids indicate necessity for thorough environmental assessment and understanding of leaching potential before sustainable geotechnical applications.</p>

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Evaluating Soluble Solids in Incinerated Municipal Solid Waste Bottom Ash, Pond Ash and Local Sand: Implications for Sustainable Geotechnical Applications

  • 期刊论文

  • 发表日期：

    2025年10月13日

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  • Shivendra Singh Kushwah,
  • Suneet Kaur

摘要

Increasing environmental concerns and rapid urbanization have led to significant municipal solid waste (MSW) generation. To address this challenge, waste-to-energy (WtE) incineration facilities are emerging as promising solutions in India. This study evaluates total soluble solids in incinerated municipal solid waste (IMSW) bottom ash using Indian Standard IS-2720 Part XXI. A comparative analysis was conducted between IMSW bottom ash, local river sand, and pond ash from a Madhya Pradesh thermal power plant to explore the feasibility of reusing IMSW bottom ash as a potential substitute for natural sand, having similar particle sizes. Results revealed significant variations in soluble solids content, with local river sand exhibiting the lowest levels, pond ash showing moderate increases, while IMSW bottom ash demonstrated substantially higher concentrations compared to both reference materials. The alkaline pH of IMSW bottom ash (8.8) was 15.8% and 13.2% higher than local sand (7.6) and pond ash (8.2) respectively. The aim was to explore the feasibility of reusing IMSW bottom ash as a potential substitute for natural sand, having their similar particle sizes. Though adequate from strength perspective as suggested in previous research, local IMSW bottom ash has notable soluble solids requiring comprehensive chemical evaluation and appropriate treatment methods. Despite comparable physical properties (specific gravity 2.48 vs. 2.62 for sand), the elevated soluble solids indicate necessity for thorough environmental assessment and understanding of leaching potential before sustainable geotechnical applications.