May 27, 2025

📘 CBG Digestate Pellets – Feasibility, Formulation & Market Insights

🔬 What Happens to Napier Grass After CBG Process?

Anaerobic Digestion (CBG Process) extracts energy-rich compounds (mainly carbohydrates, proteins) as methane-rich biogas.
The remaining digestate is low in volatile content but rich in lignin, ash, and fibrous matter.
Once dried and pelletized, digestate becomes a low-energy fuel or organic input.

⚖️ GCV Comparison Before & After CBG

Material Type	GCV (kcal/kg)
Natural Napier Grass Pellet	3,800 – 4,200
CBG Digestate Pellet (Pelletized)	2,100 – 2,600

Why GCV Drops:

Biogas removes combustible compounds.
Digestate retains non-volatile residues (ash, lignin).
High ash + low reactivity = lower combustion quality.

🔧 Mix-and-Match Recipes to Improve Pellet Quality

Recipe Type	Ingredients	Blend Ratio	GCV (kcal/kg)	Purpose
Premium Fuel	Napier Grass + Sawdust	50:50	4,200–4,500	High energy value, better combustion
Balanced Industrial Fuel	Napier Digestate + Rice Husk	70:30	3,000–3,300	Reduce ash, economical for industry
Low-Cost Rural Fuel	Digestate + Groundnut Shell + Cow Dung Powder	40:30:30	2,800–3,000	Inexpensive solution for rural users
High-Efficiency Blend	Napier + Bagasse (dry) + Corn Cob Powder	40:30:30	3,700–4,000	Improved ignition & durability
Export Quality Pellet	Napier + White Wood Chips (dry)	60:40	4,300–4,600	Premium low-ash export grade
Fertilizer Pellet	Digestate + Neem Cake + Press Mud	50:30:20	N/A	Soil amendment, not combustion-based

📊 Ingredient Snapshot

Material	GCV (kcal/kg)	Ash (%)	Notes
Napier Grass	3,800–4,200	5–8	Good base, high volatile matter
CBG Digestate	2,100–2,600	12–20+	Poor energy, fibrous residue
Sawdust (Pine)	4,200–4,600	0.5–1	Excellent fuel booster
Bagasse (Dry)	3,500–4,000	1–3	Easy blend, improves consistency
Rice Husk	3,200–3,600	15–18	Very high ash, use in small proportions
Corn Cobs	3,600–4,000	2–4	Supports ignition & burns evenly
Groundnut Shell	4,000–4,200	3–5	Energy-rich, slightly oily
Cow Dung (Dry)	2,700–3,100	8–12	Binder, moderate fuel value
Neem Cake	4,000–4,200	4–6	Good fertilizer, pest-resistant properties
White Wood Chips	4,400–4,600	0.5–1	Enhances quality, durability

📌 Pellet Manufacturing Guidelines

🌡️ Moisture: < 12%
⚙️ Mixer: Use ribbon/double-shaft mixer for uniform blending.
🔥 Perform test burns for each mix.
🪵 Add natural binders (wood, lignin-rich inputs).

🎯 Optimization Goals

Maximize:

GCV (> 4,000 kcal/kg)
Pellet durability
Combustion consistency

Minimize:

Ash content
Fines and dust generation
Breakage during handling

💼 Commercial Viability of Napier-Based Pellets

✅ Types of Marketable Pellets

Type	GCV (kcal/kg)	Ash (%)	Target Market	Viability
Pure Napier Grass Pellet	3,800–4,200	5–8	Industrial boilers, co-firing	✅ High
Napier + Sawdust/Bagasse Pellet	4,000–4,400	3–5	Export, commercial heating	✅ Very High
Digestate Pellet (Fuel Grade)	2,100–2,600	12–20	Low-grade heating	☑️ Medium
Digestate Fertilizer Pellet	N/A	N/A	Agri-retail, organic farms	✅ Niche

🔍 Key Factors for Commercial Success

Parameter	Ideal Value	Importance
GCV	> 3,800 kcal/kg	Required by industry & power plants
Ash Content	< 8%	Reduces slag, improves burner life
Pellet Size	6–10 mm	Standard size for boilers & export
Durability Index	> 95%	Survives shipping & handling
Bulk Density	650–750 kg/m³	Affects transport cost & storage
Consistent Volume	> 200 tons/month	Needed for contracts & tenders
Certifications	BIS / ISO / SGS	Boosts trust and marketability

🌎 Target Markets

Segment	Need	Your Product Fit
Industrial Boilers (India)	Fuel with GCV > 3,800 kcal/kg	Napier + wood/sawdust blends
Export Buyers	Low ash, durable pellets	Napier + white wood chips
Agri Markets	Organic fertilizer pellets	Digestate + neem cake + press mud
Government Tenders	Co-firing biomass pellets	High-GCV Napier blends
Co-ops/Farms	Affordable heating or soil use	Digestate-based multi-use pellets

💰 Estimated Market Prices (India)

Pellet Type	Price (₹/Ton)
Napier + Sawdust Pellet	₹9,000 – ₹11,500
Pure Napier Pellet	₹7,000 – ₹9,000
CBG Digestate Pellet	₹3,500 – ₹5,000
Export Grade Pellet	₹12,000 – ₹14,000+

💡 Strategies to Succeed

✅ Focus on GCV > 4,000 kcal/kg with smart mixing.
✅ Avoid digestate-only fuel pellets unless for local/rural use.
✅ Get test certifications (GCV, ash, density, durability).
✅ Build brand visibility through websites like PelletIndia.com & social media.
✅ Distribute free samples with lab reports.
✅ Engage boiler manufacturers, power plants, and traders.

📞 Contact Us for Biomass Solutions
📍 Servoday Plants & Equipments Ltd
📞 +91 9427210483 | +91 9427210484
📧 [email protected]
🌐 www.PelletIndia.com
👤 Contact Person: Sanjay Masuria
📲 WhatsApp: +91 9427210483

From Concept to Commissioning. We are with You.
Our policy is simple and transparent:
No undersized parts, no fraud, no fake components—genuinely serving since 1969. 🚀🔥

Disclaimer
The visuals and content shown in this poster are for informational and illustrative purposes only. The images of Napier Grass, CBG Plant, Pellet Machinery, and Pellets are representational and may not reflect the exact specifications of your setup. Performance parameters like GCV, ash content, and pricing may vary based on raw material quality, processing technology, and regional market conditions. Servoday Plants & Equipments Limited assumes no liability for commercial decisions based on this depiction. For customized solutions and accurate technical data, please consult our team directly.

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