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      "headings": [
        "📦 Introduction",
        "🧪 Sample Dataset",
        "📐 Langmuir Isotherm",
        "📐 Freundlich Isotherm",
        "📐 BET Isotherm",
        "📐 Temkin Isotherm",
        "🔁 Non-linear Isotherm Modeling",
        "Non-linear Langmuir",
        "Non-linear Freundlich",
        "Non-linear BET",
        "Non-linear Temkin",
        "📝 Conclusion"
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