Optimal Feedstock Selection for Bio-CNG Production

Maximizing biogas yield through scientific feedstock analysis and advanced processing techniques

Explore Feedstock Options

The Critical Role of Feedstock in Bio-CNG Production

Feedstock selection directly impacts biogas yield, plant efficiency, and economic viability of Bio-CNG projects

Biochemical Composition

The carbon-to-nitrogen ratio, moisture content, and organic matter determine methane potential

Methane Yield

Different feedstocks produce varying amounts of methane per ton of material

Digestion Kinetics

Feedstock characteristics affect digestion speed and process stability

Economic Viability

Availability, transportation costs, and pre-processing requirements impact project ROI

Feedstock Comparison Analysis

Comprehensive evaluation of common feedstock types for Bio-CNG production

Animal Manure

Animal Manure

Cattle, Poultry, Swine

Rich in nitrogen with balanced nutrients. Requires co-digestion for optimal biogas production.

25-30 m³/ton
Biogas Yield
15-25:1
C/N Ratio
60-85%
Moisture
High
Nutrients
Agricultural Residues

Agricultural Residues

Rice Straw, Corn Stover, Bagasse

High cellulose content requires pre-treatment. Excellent for co-digestion with nitrogen-rich materials.

100-150 m³/ton
Biogas Yield
60-90:1
C/N Ratio
10-20%
Moisture
Medium
Nutrients
Food Waste

Food Waste

Municipal, Commercial, Industrial

High biogas potential but requires careful management to avoid process inhibition.

120-200 m³/ton
Biogas Yield
15-20:1
C/N Ratio
70-90%
Moisture
High
Nutrients
Energy Crops

Energy Crops

Napier Grass, Sweet Sorghum

Specially grown for biogas production with high yield potential and consistent composition.

180-250 m³/ton
Biogas Yield
25-40:1
C/N Ratio
70-80%
Moisture
High
Nutrients

Key Feedstock Properties

Critical parameters affecting anaerobic digestion efficiency

Carbon-to-Nitrogen Ratio (C/N)

Optimal range: 20-30:1. Low C/N causes ammonia toxicity, high C/N slows digestion.

Moisture Content

Ideal range: 80-90% for wet digestion. Affects microbial activity and mixing efficiency.

Volatile Solids (VS)

Percentage of organic matter. Higher VS content increases biogas potential.

pH Level

Optimal range: 6.8-7.4. Extreme pH inhibits microbial activity and methane production.

Toxicity & Inhibitors

Ammonia, heavy metals, and cleaning chemicals can inhibit the digestion process.

Waste Management: India & Global Perspectives

Transforming waste challenges into energy opportunities

2.01 Billion Tons

Global municipal solid waste generated annually

62 Million Tons

Annual waste generated in India (2023)

75%

Organic content in Indian municipal waste

30%

Potential waste for biogas production

India's Waste Management Challenge

India generates approximately 62 million tons of waste annually, with organic waste constituting 75% of municipal solid waste. Currently, only about 22% of this waste is processed through composting or waste-to-energy facilities, while the majority ends up in landfills, causing environmental pollution and methane emissions.

The Government of India has set ambitious targets under the Solid Waste Management Rules, 2016 and the SATAT scheme to establish 5,000 Bio-CNG plants by 2025, creating significant opportunities for waste-to-energy conversion.

Feedstock to Bio-CNG: The Conversion Process

Shreeja Bio-Tech's optimized pathway from feedstock to clean energy

Feedstock Collection

Sourcing from agriculture, industry, and municipalities

Pre-processing

Shredding, sorting, and slurry preparation

Anaerobic Digestion

CSTR digesters at optimal conditions

Biogas Purification

Semi-cryogenic upgradation to 98% methane

Bio-CNG Production

Compression and storage for distribution

Shreeja Bio-Tech's Feedstock Expertise

Shreeja Bio-Tech Plant

Napier Grass Optimization

Proprietary techniques for maximizing biogas yield from energy crops

Feedstock Analysis Lab

In-house facility for comprehensive feedstock characterization

Pre-processing Innovation

Screwpress technology for efficient feedstock preparation

Co-digestion Formulas

Optimal blend ratios for mixed feedstock digestion

International Experience

Successful projects with palm oil effluent in Malaysia

Government Collaboration

MNRE-approved technologies and funding assistance