Especificaciones técnicas
Corncob filter media exhibits consistent physical, chemical, and performance characteristics, verified through industry-standard testing. Below is a comprehensive breakdown:
| Parámetro | Descripción | Typical Values |
|---|---|---|
| Material Composition | Primarily lignocellulose (cellulose, hemicellulose, lignin ~90%) with minor proteins, ash, and ether extracts. Elemental: Carbon 44%, Hydrogen 7%, Oxygen 47%, Nitrogen 0.4%, Trace Elements 1.5%. | Fiber Content: 90.9%; Protein: 4.28%; Ash: 3.44%; Ether Extract: 2.03%; Nitrogen-Free Extract: 63.96%. |
| Physical Properties | Angular, irregular granules; Brown/yellow color; Biodegradable and non-toxic. | Hardness (Mohs): 4.5; Bulk Density: 18-45 lbs/cu ft (1.0-1.2 g/cm³); Specific Gravity: 1.0-1.2; Moisture Content: 8-8.7%; pH: 5-7. |
| Particle Size Options | Available in various grit sizes for customized filtration efficiency. Finer sizes enhance adsorption surface area. | Coarse: 8/14 (2.0-3.0 mm); Medium Coarse: 10/14 (1.5-2.0 mm); Medium: 14/20 (1.1-1.5 mm); Fine: 20/40 (0.8-1.1 mm); Very Fine: 40/60 or finer (0.18-0.8 mm). |
| Performance Metrics | High absorbency and adsorption; Effective in reducing BOD, turbidity, and contaminants. | Absorbency: Up to 4x weight in liquids; Adsorption Capacity (e.g., azo dyes): Up to 73.71 mg/g; Compressive Strength: 38,463 psi; Attrition Resistance: 98.6%; BOD Reduction (grey water): ~40%; Turbidity Reduction: Up to 43% (e.g., from 30 NTU to 17 NTU). |
| Chemical Stability | Neutral pH range; Resistant to attrition; Point of Zero Charge (pH_pzc): ~6.83. | Functional Groups: O-H, C=O, C-O for binding anions; Exothermic adsorption process (ΔH°: -9,692 J/mol). |
| Packaging & Storage | Standard 25-50 lb bags, 500 kg jumbo bags, or drums; Customizable. Store in dry, ventilated areas to maintain moisture levels. | Shelf Life: Indefinite if stored properly; Transport: Lined PE waterproof with metal/carbon drums. |
Aplicaciones
Corncob filter media excels in diverse industrial filtration scenarios, addressing key challenges like contaminant removal and sustainability. Common uses include:
- Tratamiento de aguas y aguas residuales: Acts as a biosorbent in biofilters or packed-bed systems to remove dyes, heavy metals (e.g., ferrous, copper, lead), organic pollutants, caffeine, triclosan, and effluents from textiles or chemicals. Ideal for grey water recycling, achieving up to 40% BOD reduction and suitable for groundwater recharge, irrigation, or flushing.
- Industrial Effluent Filtration: Absorbs oils, nuclear/chemical waste, and spills; Used in vertical reactors or continuous systems for pH adjustment, turbidity reduction (up to 43%), and acidity/ammonia removal.
- Air and Gas Filtration: As a lightweight, dust-free media in air scrubbers or biofilters for odor control and particulate capture.
- Usos especializados: In pharmaceuticals as a carrier; In oil industry for spill cleanup; Integrated into dynamic membrane systems for high-solids separation without pretreatment.
- Comparative Performance: Outperforms bone char in physical contaminant removal (e.g., turbidity, ammonia) and wood chippings in acidity reduction, with hybrid setups recommended for optimal results.
Advantages
Corncob filter media delivers compelling value through its unique properties, outperforming traditional alternatives like activated carbon or synthetic resins:
- Environmental Sustainability: 100% biodegradable, renewable, and non-toxic; Reduces waste by repurposing agricultural by-products; Lowers carbon footprint with no silica dust or pollutants, complying with eco-regulations.
- Cost-Effectiveness: Economical production and reusability (e.g., desorption with NaOH achieves ~98% efficiency); Minimizes pretreatment needs, energy consumption, and chemical additives in filtration processes.
- Superior Performance: High absorbency (4x weight) and adsorption (up to 73 mg/g for dyes); Soft yet durable for gentle filtration without surface damage; Effective across pH 1.5-6 for anionic contaminants.
- Health and Safety: Dust-free and silica-free, reducing respiratory risks; USDA BioPreferred certified in select products for assured quality.
- Market Edge: Versus alternatives, it offers better turbidity/acidity removal than bone char and higher chemical stability; Supports global trends in green filtration, appealing to eco-conscious buyers.
By choosing corncob filter media, users achieve efficient contaminant removal while addressing pain points like high costs, environmental compliance, and system fouling.
Conformidad y certificaciones
Corncob filter media adheres to international standards for safety, quality, and environmental impact:
- Safety Data Sheets (SDS): Available, classifying it as non-hazardous; Complies with OSHA guidelines for abrasive materials (no toxic dust).
- Water Treatment Standards: Aligns with NSF/ANSI 42/61 for filtration media (certifiable for aesthetic and health effects); ISO 16890/29463 for air filter efficiency where applicable.
- Environmental Certifications: USDA BioPreferred for bio-based products; Biodegradable per global eco-standards; No REACH-restricted substances.
- Export Compliance: Meets DOT transport requirements; Customizable packaging with clear labeling for international trade.
- Quality Assurance: Batch-tested for consistency; Independent studies verify performance (e.g., pseudo-second-order kinetics for adsorption).
For specific certifications or testing reports, contact us to ensure alignment with your regional requirements.
