🔥 Boosting Rice Husk Pellet Efficiency with Mix-Match Biomass Strategy in Gujarat & Beyond

🔬 Rice Husk Pellet Sample Report (Gujarat)

• Ash Content: 20.85%
• Gross Calorific Value (GCV): 3285 kcal/kg

➡️ These results show that while rice husk is abundant, it presents challenges due to high ash and moderate energy yield. To enhance performance, a mix-match recipe combining low-ash and high-GCV biomass materials is essential.

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🌾 Objective: Improve Pellet Quality Using Mix-Match Recipe

• ✅ Goal: Lower ash content and increase the energy value (GCV) of rice husk-based pellets
• ✅ Method: Combine rice husk with selected low-ash, high-energy biomass materials tailored to regional availability

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🧪 Best Biomass Materials for Mix-Match Pelletizing

Biomass Material	Ash Content (%)	GCV (kcal/kg)	Advantages
Wood Sawdust	0.5 – 1.5	4000 – 4500	Ultra low ash, clean burning
Groundnut Shell	3 – 5	3800 – 4300	High energy, moderate ash
Cotton Stalk	5 – 7	3600 – 4000	Widely available in Gujarat
Napier Grass (Dried)	6 – 8	3800 – 4200	Renewable, good binder
Mustard Husk	4 – 6	3700 – 4100	Regional crop residue
Maize Stalk (Corn Stover)	6 – 9	3500 – 4000	Suitable for MP & MH
Bamboo Dust	2 – 5	4000 – 4400	Low ash, enhances durability
Sugarcane Bagasse (dry)	3 – 6	3300 – 3900	Good blend base for MH

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📍 Regional Mix-Match Strategy

1️⃣ Gujarat

• ✔️ Use Cotton Stalk and Napier Grass
• 🔄 Recipe:
  • 40% Rice Husk
  • 30% Cotton Stalk
  • 30% Napier Grass

2️⃣ Rajasthan

• ✔️ Use Mustard Husk and Sawdust
• 🔄 Recipe:
  • 50% Rice Husk
  • 25% Mustard Husk
  • 25% Wood Sawdust

3️⃣ Maharashtra

• ✔️ Use Sugarcane Bagasse and Corn Stalk
• 🔄 Recipe:
  • 40% Rice Husk
  • 30% Bagasse
  • 30% Corn Stalk or Sawdust

4️⃣ Madhya Pradesh

• ✔️ Use Maize Stalk, Cotton Stalk, and Napier
• 🔄 Recipe:
  • 50% Rice Husk
  • 25% Maize Stalk
  • 25% Napier Grass

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📌 Technical Considerations for Optimal Pellet Quality

• Pellet Die Size: Adjust between 6–10 mm based on fiber length
• Ideal Moisture Content: 10–12% for efficient pelletizing
• Compression Ratio: Use 1:6 to 1:7 for rice husk-dominant blends
• Binders: Natural lignin from sawdust/bamboo can improve binding & durability

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✅ Benefits of Mix-Match Recipe

• 🔻 Reduced Ash ➝ Lower boiler slagging & better combustion
• 🔼 Improved GCV ➝ Higher heat output per kg
• 🔧 Durability ➝ Stronger pellets with better integrity
• ♻️ Sustainability ➝ Utilizes local, renewable agricultural residues

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💡 Gujarat-Optimized Biomass Blend

• 40% Rice Husk
• 30% Cotton Stalk
• 30% Napier Grass (Dried)

🔍 Why This Works:

• Cotton Stalk: Readily available, moderate ash, good energy
• Napier Grass: Boosts binding, renewable, fast-growing
• Rice Husk: Balanced by low-ash components, still utilized efficiently

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🔧 Expected Pellet Output (With This Blend):

• Ash Content: ~7–9%
• GCV: ~3700–4000 kcal/kg
• Durability: High (improved physical strength)
• Optimal Moisture for Pelletizing: 10–12%

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