Biogas Activated Carbon
Industry Challenges
Material Performance Limitations
- Adsorption Selectivity: Activated carbon exhibits non-selective adsorption, capturing CO₂ and moisture alongside target contaminants like H₂S or siloxanes, reducing effective capacity for primary pollutants.
- Pore Clogging: Particulates, oil mist, or tars in biogas physically block micropores ("pore poisoning"), diminishing surface area and adsorption efficiency over time.
Sensitivity to Operational Conditions
- Humidity Interference: High moisture levels (>70% RH) compete with contaminants for adsorption sites, significantly lowering H₂S removal performance, especially in humid climates.
- Temperature Instability: Elevated biogas temperatures (e.g., >40°C) reduce adsorption capacity and may trigger desorption of captured pollutants.
System Integration and Maintenance
- Saturation Management: Finite adsorption capacity necessitates frequent carbon replacement or regeneration, risking pollutant "breakthrough" if not timely addressed.
- Regeneration Complexity: Thermal/chemical regeneration is energy-intensive and may incompletely restore capacity or release trapped pollutants, requiring secondary treatment.
related types of activated carbon
- Iodine Value: 600-1200
- Mesh Size: 1×4/4×8/8×16/8×30/12×40/20×40/20×50/30×60/40×70 (More size on request)
- Apparent Density: 400-700
- Iodine Value: 500-1300
- Mesh Size:0.9-1mm/1.5-2mm/3-4mm/6mm/8mm(More size on request)
- Apparent Density: 450-600
- Iodine Value: 500-1300
- Mesh Size: 150/200/300/350 (More size on request)
- Apparent Density: 450 – 550
- Iodine Value: 400-800
- Mesh Size: 100×100×100mm/100×100×50mm (Custom cell density on request)
- Apparent Density: 350-450
- Bore Diameter：1.5-8mm
- Iodine Value: 700-1200 mg/g
- Surface Area: 700-1200 m²/g
- Apparent Density: 320-550 kg/m³
- Iodine Value: 700-1200 mg/g
- Surface Area: 700-1200 m²/g
- Apparent Density: 320-550 kg/m³
- Iodine Value: 700-1200 mg/g
- Surface Area: 700-1200 m²/g
- Apparent Density: 300-650 kg/m³
- Iodine Value: 700-1200 mg/g
- Surface Area: 700-1200 m²/g
- Apparent Density: 320-550 kg/m³
- Activation Method: Steam/gas activation at high temperatures
- Pore Structure: Microporous-dominated, uniform pore distribution
- Environmental Profile: Chemical-free, low ash content
- Primary Applications: Gas-phase adsorption, drinking water purification
- Activation Method: Chemical activation (e.g., H₃PO₄/ZnCl₂) at moderate temperatures
- Pore Structure: Mesoporous-rich, higher surface area
- Process Efficiency: Shorter activation time, 30-50% higher yield
- Post-Treatment: Acid-washing required to remove residues
- Functionalization: Loaded with active agents (e.g., I₂/Ag/KOH)
- Targeted Adsorption: Enhanced capture of specific pollutants (e.g., Hg⁰/H₂S/acid gases)
- Customization: Chemically optimized for target contaminants
- Core Applications: Industrial gas treatment, CBRN protection
Why You Need Our Activated Carbon
Enhanced Contaminant Selectivity:
Targeted adsorption for critical biogas impurities (H₂S, siloxanes) with minimal interference from CO₂ or moisture, maximizing effective capacity.
Advanced Material Engineering:
(1) Chemically optimized impregnation ensures catalytic H₂S conversion to harmless byproducts without frequent media replacement.
(2) Tailored pore structure prevents premature clogging and maintains high siloxane/VOC adsorption efficiency.
Operational Resilience:
(1) Stable performance under high humidity (>70% RH) without pre-drying requirements.
(2) Consistent adsorption capacity across variable biogas temperatures and compositions.
Sustainable Lifecycle:
(1) Biomass-derived raw materials from renewable sources align with circular economy principles.
(2) Regenerable design extends service life and reduces waste generation.
System Integration Support:
(1) Predictable saturation indicators enable proactive maintenance scheduling. (2) Reduced backpressure in filter beds lowers energy consumption for gas transfer.
Process and Technolog
1. Hydrogen Sulfide (H₂S) Removal
Solution Overview
Chemically impregnated activated carbon catalytically converts toxic H₂S into harmless elemental sulfur through oxidation. Installed in fixed-bed filters where raw biogas flows through the carbon media.
Key Advantages
- Prevents corrosion damage to engines and pipelines.
- Maintains effectiveness in humid biogas environments.
- Eliminates toxic gas emissions during energy generation.
- Requires no chemical additives during operation.
2. Siloxane Removal
Solution Overview
High-surface-area activated carbon physically adsorbs siloxane compounds through its microporous structure. Implemented in adsorption towers upstream of combustion equipment.
Key Advantages
- Prevents abrasive silica deposits in engines.
- Extends maintenance intervals for generation equipment.
- Maintains consistent energy output quality.
- Handles variable biogas composition effectively.
3. Volatile Organic Compounds (VOCs) and Odor Control
Solution Overview
Activated carbon traps diverse organic compounds and odor-causing substances via physical adsorption. Used in final polishing stages before biogas utilization.
Key Advantages
- Removes hazardous air pollutants.
- Eliminates nuisance odors from biogas facilities.
- Improves environmental compliance.
- Enhances community acceptance of biogas projects.
4. Carbon Dioxide (CO₂) Capture for Biogas Upgrading
Solution Overview
Specially engineered activated carbon with tuned pore structures selectively adsorbs CO₂ from biogas streams. Deployed in pressure swing adsorption systems for methane enrichment.
Key Advantages
- Produces pipeline-quality biomethane.
- Utilizes sustainable biomass-derived carbon materials.
- Enables grid injection of purified biogas.
- Supports circular economy through waste valorization.
