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The persistent challenge of heat loss in onshore gas pipelines compromises operational efficiency and can induce detrimental gas condensation. While existing insulation technologies offer partial solutions, they frequently depend on unsustainable and ecologically damaging materials such as fiberglass and mineral wool. This study introduces a novel, bio-derived approach: a composite aerogel fabricated from tilapia fish scale collagen and sodium silicate, explored as a sustainable insulation alternative. This composite was characterized using TGA/DSC and FTIR to evaluate its thermal performance. The resulting aerogels exhibited a porous microstructure with densities ranging from 0.2770 g/cm3 to 0.2828 g/cm3 and thicknesses between 19.3 mm and 19.8 mm, aligning with established aerogel characteristics. FTIR analysis definitively confirmed the incorporation of collagen within the composite matrix. TGA demonstrated resilient thermal stability up to 200 ℃. In particular, the thermal conductivity of the aerogels ranged from 1.04 × 10–4 W/m-K to 1.25 × 10–4 W/m-K, underlining their potential as effective and durable insulators for onshore gas pipelines operating at low to medium temperatures. This research concludes that collagen aerogels derived from a readily available bio-resource—tilapia fish scales—present a compelling, sustainable epochal shift in insulation technology for moderate-temperature pipeline applications.

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Utilization of Tilapia Fish Scale (Oreochromis niloticus) for the Production of Collagen-Sodium Silicate Composite Aerogel for Moderate Temperature Insulation

  • 会议论文

  • 发表日期：

    2025年

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  • Adrian Kobe S. Abayari,
  • Kyle Howard H. Bagsic,
  • Athos P. Fajardo,
  • Szackarie John Exequiel J. Querubin,
  • Mereille P. Tabile,
  • Jayson Binay,
  • Jerry G. Olay,
  • Rugi Vicente C. Rubi

摘要

The persistent challenge of heat loss in onshore gas pipelines compromises operational efficiency and can induce detrimental gas condensation. While existing insulation technologies offer partial solutions, they frequently depend on unsustainable and ecologically damaging materials such as fiberglass and mineral wool. This study introduces a novel, bio-derived approach: a composite aerogel fabricated from tilapia fish scale collagen and sodium silicate, explored as a sustainable insulation alternative. This composite was characterized using TGA/DSC and FTIR to evaluate its thermal performance. The resulting aerogels exhibited a porous microstructure with densities ranging from 0.2770 g/cm3 to 0.2828 g/cm3 and thicknesses between 19.3 mm and 19.8 mm, aligning with established aerogel characteristics. FTIR analysis definitively confirmed the incorporation of collagen within the composite matrix. TGA demonstrated resilient thermal stability up to 200 ℃. In particular, the thermal conductivity of the aerogels ranged from 1.04 × 10–4 W/m-K to 1.25 × 10–4 W/m-K, underlining their potential as effective and durable insulators for onshore gas pipelines operating at low to medium temperatures. This research concludes that collagen aerogels derived from a readily available bio-resource—tilapia fish scales—present a compelling, sustainable epochal shift in insulation technology for moderate-temperature pipeline applications.